BQ76940EVM

User's Guide SLVU925C – April 2014 – Revised December 2018 bq76930 and bq76940 Evaluation Module User's Guide The bq76930EVM evaluation module (EVM) is a complete evaluation system for the bq76930, a 6-cell to 10-cell Li-Ion battery analog front end (AFE) integrated circuit. The bq76940EVM evaluation module (EVM) is a complete evaluation system for the bq76940, a 9-cell to 15-cell Li-Ion battery analog front end (AFE) integrated circuit. The EVM consists of a circuit module which can be used for simple evaluation of the AFE and bq78350 gauge functions. The circuit module includes one bq76930 or bq76940 integrated circuit (IC), sense resistor, power FETs, and all other onboard components necessary to protect the cells from overcharge, over discharge, short circuit, and overcurrent discharge in a 10- or 15-series cell Li-Ion or Phosphate battery pack. The circuit module connects directly across the cells in a battery. With a compatible interface board and Microsoft® Windows® based PC graphical user interface (GUI) software, the user can view the device registers, adjust protection limits and enable FET control outputs. 1 2 3 4 5 6 7 Contents Features ....................................................................................................................... 4 1.1 Kit Contents.......................................................................................................... 4 1.2 Ordering Information ............................................................................................... 4 1.3 bq769x0 Circuit Module Performance Specification Summary ............................................... 4 1.4 Required Equipment ................................................................................................ 4 bq769x0 EVM Quick Start Guide .......................................................................................... 5 2.1 Before You Begin ................................................................................................... 5 2.2 Quick Start ........................................................................................................... 6 Interface Adapter............................................................................................................. 9 bq76940/bq76930/bq76920 Software .................................................................................... 9 4.1 System Requirements ............................................................................................ 10 4.2 Installing the bq76940/bq76930/bq76920 Software ......................................................... 10 4.3 Interface Adapter .................................................................................................. 10 4.4 Software Operation ............................................................................................... 10 Battery Management Studio Software ................................................................................... 16 5.1 System Requirements ............................................................................................ 16 5.2 Installing bqStudio ................................................................................................. 16 5.3 Interface Adapter SMB ........................................................................................... 16 5.4 bqStudio Operation ............................................................................................... 16 5.5 Firmware Programming........................................................................................... 18 5.6 Data Memory Configuration ...................................................................................... 20 5.7 Chemistry View .................................................................................................... 21 5.8 Calibration ......................................................................................................... 22 5.9 Device Control ..................................................................................................... 24 bq769x0 Circuit Module Use .............................................................................................. 24 6.1 Cell Simulator ...................................................................................................... 24 6.2 Minimum Operating Voltage ..................................................................................... 25 6.3 Evaluating with Simulated Current .............................................................................. 25 6.4 Reducing the Cell Count ......................................................................................... 26 6.5 Connecting Cells .................................................................................................. 27 6.6 Connecting to a Host ............................................................................................. 29 6.7 Gauge Circuits ..................................................................................................... 30 6.8 Unused Components ............................................................................................. 30 Circuit Module Physical Construction .................................................................................... 31 7.1 Board Layout ....................................................................................................... 31 SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 1 www.ti.com 8 7.2 bq76930EVM Circuit Module .................................................................................... 38 7.3 bq76940EVM Circuit Module .................................................................................... 49 Related Documents From Texas Instruments .......................................................................... 59 List of Figures 1 EVM Connection for Basic AFE Operation ............................................................................... 7 2 EVM Connection for Basic Gauge Operation ............................................................................ 9 3 bq76940/bq76930/bq76920 Evaluation Software Display ............................................................ 11 4 Registers View .............................................................................................................. 12 5 I2C Pro View ................................................................................................................ 14 6 Sequence View ............................................................................................................. 15 7 Target Selection Wizard ................................................................................................... 17 8 bqStudio Window with Blank Gauge..................................................................................... 18 9 Firmware View .............................................................................................................. 19 10 Dashboard Adapter and Device Version Display ...................................................................... 19 11 Register View After Restart ............................................................................................... 20 12 Data Memory Bit Field change ........................................................................................... 21 13 Chemistry View ............................................................................................................. 22 14 Calibration View ............................................................................................................ 23 15 Example Voltage Calibration Successful ................................................................................ 23 16 Advanced Comm SMB View 17 Simulating Current Setup 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 ............................................................................................. ................................................................................................. Example 8 Cell Simple Evaluation Configuration ...................................................................... Example Connection With 9 Cells ....................................................................................... Host Connection Concept ................................................................................................. Top Silk Screen............................................................................................................. Top Layer ................................................................................................................... Layer 2 ....................................................................................................................... Layer 3 ....................................................................................................................... Bottom Layer................................................................................................................ Bottom Silk Screen ......................................................................................................... bq76930EVM Top Assembly ............................................................................................. bq76930EVM Bottom Assembly ......................................................................................... bq76930EVM Schematic Diagram FETs ................................................................................ bq76930EVM Schematic Diagram AFE1 ............................................................................... bq76930EVM Schematic Diagram AFE2 ............................................................................... bq76930EVM Schematic Diagram Gauge ............................................................................. bq76930EVM Schematic Diagram Cell Simulator .................................................................... bq76940EVM Top Assembly ............................................................................................. bq76940EVM Bottom Assembly ......................................................................................... bq76940EVM Schematic Diagram FETs ................................................................................ bq76940EVM Schematic Diagram AFE1 ............................................................................... bq76940EVM Schematic Diagram AFE2 ............................................................................... bq76940EVM Schematic Diagram Gauge ............................................................................. bq76940EVM Schematic Diagram Cell Simulator ..................................................................... 24 26 27 29 30 32 33 34 35 36 37 38 39 44 45 46 47 48 49 50 54 55 56 57 58 List of Tables 2 ........................................................................................................ 1 Ordering Information 2 Performance Specification Summary ..................................................................................... 4 bq76930 and bq76940 Evaluation Module User's Guide 4 SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated www.ti.com 3 Reducing Cell Count ....................................................................................................... 26 4 bq76930EVM Circuit Module Bill of Materials .......................................................................... 40 5 bq76940EVM Circuit Module Bill of Materials .......................................................................... 51 Trademarks Microsoft, Windows are registered trademarks of Microsoft Corporation. General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines WARNING Always follow TI’s set-up and application instructions, including use of all interface components within their recommended electrical rated voltage and power limits. Always use electrical safety precautions to help ensure your personal safety and the safety of those working around you. Contact TI’s Product Information Center http://support/ti./com for further information. Save all warnings and instructions for future reference. Failure to follow warnings and instructions may result in personal injury, property damage, or death due to electrical shock and/or burn hazards. The term TI HV EVM refers to an electronic device typically provided as an open framed, unenclosed printed circuit board assembly. It is intended strictly for use in development laboratory environments, solely for qualified professional users having training, expertise, and knowledge of electrical safety risks in development and application of high-voltage electrical circuits. Any other use and/or application are strictly prohibited by Texas Instruments. If you are not suitably qualified, you should immediately stop from further use of the HV EVM. 1. Work Area Safety: 1. Keep work area clean and orderly. 2. Qualified observer(s) must be present anytime circuits are energized. 3. Effective barriers and signage must be present in the area where the TI HV EVM and its interface electronics are energized, indicating operation of accessible high voltages may be present, for the purpose of protecting inadvertent access. 4. All interface circuits, power supplies, evaluation modules, instruments, meters, scopes and other related apparatus used in a development environment exceeding 50 VRMS/75 VDC must be electrically located within a protected Emergency Power Off (EPO) protected power strip. 5. Use a stable and non-conductive work surface. 6. Use adequately insulated clamps and wires to attach measurement probes and instruments. No freehand testing whenever possible. 2. Electrical Safety:As a precautionary measure, it is always a good engineering practice to assume that the entire EVM may have fully accessible and active high voltages. 1. De-energize the TI HV EVM and all its inputs, outputs, and electrical loads before performing any electrical or other diagnostic measurements. Revalidate that TI HV EVM power has been safely de-energized. 2. With the EVM confirmed de-energized, proceed with required electrical circuit configurations, wiring, measurement equipment hook-ups and other application needs, while still assuming the EVM circuit and measuring instruments are electrically live. 3. Once EVM readiness is complete, energize the EVM as intended. WARNING: while the EVM is energized, never touch the EVM or its electrical circuits as they could be at high voltages capable of causing electrical shock hazard. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 3 Features www.ti.com 3. Personal Safety: 1. Wear personal protective equipment, for example, latex gloves and/or safety glasses with side shields or protect EVM in an adequate lucent plastic box with interlocks from accidental touch. 4. Limitation for Safe Use: 1. EVMs are not to be used as all or part of a production unit. 1 Features • • • • • • 1.1 Kit Contents • • 1.2 Complete evaluation system for the bq76930 or bq76940 Li-Ion and Phosphate battery AFE Populated circuit module for 10-cell or 15-cell configuration for quick setup Power connections available on screw terminals Communication signals available on 4-pin connector Resistor cell simulator for quick setup with only a power supply PC software available for configuration bq769x0 circuit module Cable to connect the EVM to an EV2400 or EV2300 interface board Ordering Information For complete ordering information, refer to the product folder at www.ti.com. Table 1. Ordering Information EVM Part Number Chemistry Configuration Capacity bq76930EVM Li-Ion 10 cells Any bq76940EVM Li-Ion 15 cells Any NOTE: Although capacity is shown as Any, practical limits of the physical construction of the module will typically limit the operation of the EVM to a 1P or 2P battery construction. Refer to the physical construction section for board details. 1.3 bq769x0 Circuit Module Performance Specification Summary This section summarizes the performance specifications of the bq769x0 circuit module in its default 10- or 15-cell configuration. Typical voltage depends on the number of cells configured. Typical current depends on the application. Board cooling may be required for continuous operation at or below maximum current. Table 2. Performance Specification Summary Specification Min Typ Max Unit bq76930EVM 26 – 44 V bq76940EVM 38 – 66 V Continuous charge or discharge current 0 – 15 A Operating temperature range 20 25 30 °C Input voltage BATT+ with respect to BATT– 1.4 Required Equipment The following equipment is required to operate the bq769x0 EVM in a simple demonstration: • DC power supply, 0-44 V (bq76930EVM) or 0-66 V (bq76940EVM) at 0.5 A for the AFE, 2.5 A for the gauge 4 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq769x0 EVM Quick Start Guide www.ti.com • • • • • DC voltmeter TI EV2300 or EV2400 interface board Computer with USB port and compatible Windows operating system and access to the internet Test leads to connect equipment Electronic load or assorted resistors, calibrated load or load with accurate current meter required for gauge evaluation Additional equipment may be desired to operate the bq769x0 with a more extensive demonstration. 2 bq769x0 EVM Quick Start Guide 2.1 Before You Begin The following warnings and cautions are noted for the safety of anyone using or working close to the bq76920 EVM. Observe all safety precautions. Warning Warning Hot surface. Contact may cause burns. Do not touch Caution Do not leave EVM powered when unattended. Danger High Voltage The bq76940EVM is not rated as a high voltage EVM, has smaller clearances than normally used on high voltage boards and does not have an isolation boundary. If you apply high voltage to this board, all terminals should be considered high voltage. spacer Electric shock is possible when connecting the board to live wire. The board should be handled with care by a professional. spacer For safety, use of isolated test equipment with overvoltage and overcurrent protection is highly recommended. ! CAUTION The circuit module has signal traces, components, and component leads on the bottom of the board. This may result in exposed voltages, hot surfaces or sharp edges. Do not reach under the board during operation. CAUTION The circuit module may be damaged by overtemperature. To avoid damage, monitor the temperature during evaluation and provide cooling, as needed, for your system environment. CAUTION Some power supplies can be damaged by application of external voltages. If using more than 1 power supply check your equipment requirements and use blocking diodes or other isolation techniques, as needed, to prevent damage to your equipment. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 5 bq769x0 EVM Quick Start Guide www.ti.com CAUTION The communication interface is not isolated on the EVM. Be sure no ground potential exists between the computer and the EVM. Also be aware that the computer will be referenced to the Battery- potential of the EVM. 2.2 Quick Start Determine if you wish to evaluate the AFE alone or with the gauge. For the AFE, proceed to Section 2.2.1. For the gauge, skip to Section 2.2.2. 2.2.1 AFE Quick Start These steps describe quick connection of the bq76930 and bq76940 EVMs to demonstrate operation of the AFE portion of the EVM. For a more detailed description, refer to other sections of the user guide. Refer to Figure 1 for the following steps: 1. Download the bq76940/bq76930/bq76920 evaluation software from the tool folder link www.ti.com/tool/bq76940EVM or search from www.ti.com. 2. Install the bq76940/bq76930/bq76920 Evaluation Software. Software can be obtained from www.ti.com. Install drivers for the EV2300, if necessary. 3. Remove shunts from headers connecting the AFE to the gauge 4. If the EV2300 is used, install shunts on the SCL and SDA pull-up headers. Remove any pull-up shunts when using the EV2400. 5. Close all dip switch positions (default is closed) 6. Attach the interface board communication adapter to the PC using the USB cable. The EV2400 is recommended, the EV2300 works if it is available and drivers are installed. 7. Attach the interface board I2C connector to the EVM I2C connector using the 4 pin cable. 8. Connect a 0-V DC power supply capable of 250 mA minimum to the “BATT” terminals and adjust to approximately 38 V. The illuminated LED indicates the cell simulator resistor divider is powered. 9. Press and release the BOOT switch 10. Start the bq769X0 evaluation software. The graphical user interface (GUI) should display. Click on the Scan box to enable repeated update of the display. The power supply may be adjusted within range of the part to observe voltage changes in the GUI display Stack V/T/I section. 11. Set the voltage to approximately 38 V or a mid-range operating level. Clear any faults present by clicking on the Clear Faults button of the All Read/Write Registers section of the GUI. 12. Click on the Continuous button in the GUI Coulomb Counter section. Enable the CHG_ON and DSG_ON bits by clicking on the bit and commit the changes. Apply a load to the PACK terminals. Load current must be within the capability of the supply and the components installed or 15 A, whichever is lower. Observe the Coulomb Counter value change in the GUI display Stack V/T/I section. 13. Make other adjustments as desired for evaluation. Refer to other sections of this user guide for additional details. 6 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq769x0 EVM Quick Start Guide www.ti.com Figure 1. EVM Connection for Basic AFE Operation 2.2.2 Gauge Quick Start These steps describe quick connection of the bq769x0 EVM to demonstrate operation of the gauge portion of the EVM. For more detailed descriptions, refer to other sections of the user guide. If you are new to bqStudio software, you may wish to refer to the more detailed instructions for installing the software in Section 5 before using the quick start. Refer to Figure 2 for the following steps. 1. Download the Battery Management Studio (bqStudio) software from the bq78350 product folder link www.ti.com/product/bq78350-R1 or search from www.ti.com. 2. Install the bqStudio software. Install drivers for the EV2300, if necessary. 3. Install 4 shunts on the J14 header connecting the AFE to the gauge: SCL, SDA, REGOUT and ALERT. 4. Install shunts on the SCL and SDA pull-up headers. 5. Install shunts on the /KEYIN, /PRES, 16/17 and H positions of the other headers. 6. Close all dip switch positions (default is closed). 7. Attach the interface board communication adapter to the PC using USB cable. The EV2400 version 0.18 or later may be used. Check the EV2400 tool folder for available updates. Do not use the original 0.05 version EV2400 since it may damage the EVM. The EV2300 works if it is available and drivers are installed. 8. Attach the interface board SMB connector to the EVM SMB connector using the 4-pin cable. 9. Remove any connection to the I2C connector. This connector must remain open for operation with the gauge. 10. Connect a 0-V DC power supply capable of 2 A minimum to the “BATT” terminals and adjust to approximately 3V/cell (30 V for bq76930EVM, or 45 V for bq76940EVM) . The illuminated LED indicates the cell simulator resistor divider is powered. 11. Press and release the BOOT switch. 12. Start the bqStudio software. The EVM has shipped with different versions of the bq78350 firmware. Observe the windows which display as the software starts. If a Register View window appears similar to Figure 11, check the gauge device version in the dashboard view on the left side of the window. If the version is the latest, proceed to , otherwise perform the following steps. At this update bq78350-R1 is the production version, bq78350-R2 firmware is available. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 7 bq769x0 EVM Quick Start Guide www.ti.com a. The bq78350 on the initial EVMs shipped blank, so the bqStudio will present a Target Selection Wizard box. Select the latest version of the bq78350 from the list and select the Finish button. Acknowledge the Proceed and the Battery Management Studio Timeout windows. The GUI should display similar to Figure 8. b. If the gauge is not blank it will display the version in the dashboard similar to Figure 10. If the version is correct proceed with evaluation. c. Download the bq78350_xx firmware bundle from the latest bq78350 product folder www.ti.com/product/bq78350-R1, save it to a temporary location on your computer, and run the installer. Observe the installation directory of the firmware file, typically C:\ProgramData\Texas Instruments\bq78350xxFirmwareBundle-xxxx d. Click on the bqStudio Firmware button at the top of the window to select the firmware view. e. Click on the Browse button right of the program window, navigate to and select the installed .srec file. f. Click on the Program button. Wait for the programming status window to close, typically about 45 s. g. Restart the bqStudio software so it can autodetect the device. 13. In the registers view, select the Refresh button and observe that there are 3 cell voltages. 14. Change the cell count to the number of cells supported by the board: Select the Data Memory view, then the Settings button and the AFE Cell Map register. Change the value to the cells supported (0x03FF for bq76930EVM, or 0x7FFF for bq76940EVM) and click on the Write to Data Memory button. Read data memory if desired to confirm the new value. 15. Send a Reset command using the Commands view or the from the Advanced Comm SMB view. 16. Select the Registers view and Refresh the values. Observe that all supported cells now show a voltage reading. 17. Send the FET_EN command using the Commands view or the from the Advanced Comm SMB view. 18. Select the Registers view and Refresh the values. Observe that the FET_EN bit is now set and that the CHG and DSG FET status is shown enabled. 19. Select the Calibration bq78350 view. 20. Enter the board temperature in the Temperature Sensor boxes and click on the Calibrate Temperature button. Wait until a check box appears next to the button. 21. Measure the voltage of the BATT terminals. Divide the value by the number of cells and enter the value in mV in the Ext Average Cell Voltage box. Click on the Calibrate Voltage button. Wait until a check box appears next to the button. 22. Disconnect the load from the PACK terminals. Click on the Calibrate CC Offset button and wait until the check mark appears next to the button. 23. Connect the load set to a known value of approximately 2 A to the PACK terminals. Enter the value in mA into the Applied Current box. Discharge current should be entered as a negative value. Click on the Calibrate Current button and wiat until the check mark appears next to the button. 24. Select the Registers view and Refresh the values. Observe the updated voltage, temperature and current values. The EVM is functioning and ready for further configuration for evaluation. Refer to the Technical Reference Manual (TRM) or other documents for the bq78350, and the other sections of this user guide for additional information. 8 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Interface Adapter www.ti.com Figure 2. EVM Connection for Basic Gauge Operation 3 Interface Adapter The bq76940/bq76930/bq76920 evaluation software and bqStudio software support either the TI EV2400 or EV2300 interface board to provide communication with the EVM board from the computer. The EV2400 is the recommended interface and uses operating system drivers so no separate installation is required. Drivers must be installed for the EV2300 and may not be available for newer operating systems. Do not connect the EV2300 interface board to the computer until after the drivers are installed. To use the EV2400 to program the bq78350, its firmware must be updated to version 0.18 or newer. The firmware version of the EV2400 may be observed in the bqStudio dashboard, see Figure 10. Find the latest EV2400 Firmware Updater in the tool folder http://www.ti.com/tool/ev2400. If you have used an EV2300 with your computer previously, no additional installation is required. EV2300 drivers are included in the installation package and can be found in the installation directory after installing the software, typically at C:\Program Files (x86)\Texas Instruments\bq76940. Alternatively or for the bqStudio software, drivers are found at http://e2e.ti.com/support/power_management/battery_management/m/videos__files/458983.aspx or http://www.ti.com/tool/ev2300. Install the drivers by following these steps: 1. Navigate to the directory with the drivers. 2. Run the file EV2300....exe 4 bq76940/bq76930/bq76920 Software This section describes how to install and use the bq76940/bq76930/bq76920 software for the EVM. This software is used when evaluating the AFE alone without the gauge. For evaluation with the bq78350 gauge, refer to Section 5. The bq76940/bq76930/bq76920 software supports the bq769x0 AFE I2C communication. This software is intended to demonstrate register control and operation of the bq76940 family of AFEs in the absence of a gauge or MCU. This software is not intended to operate on a bus with another master. The AFE does not turn on the protection FETs without control, the bq76940/bq76930/bq76920 Evaluation software allows the user to provide that control from the GUI. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 9 bq76940/bq76930/bq76920 Software www.ti.com The software may also be identified as bq76940 or bq769X0 in menus or windows as space permits. 4.1 System Requirements The bq76940/bq76930/bq76920 software requires Windows 7, or later operating system. The computer must also have Microsoft® .NET connection software version 4.0 or higher installed. Examples in this document are from Windows 7. 4.2 Installing the bq76940/bq76930/bq76920 Software Find the latest software version in the software section of the EVM tool folder http://www.ti.com/tool/bq76930EVM or http://www.ti.com/tool/bq76940EVM or search from power.ti.com. Check periodically for software updates. Use the following steps to install the bq76940/bq76930/bq76920 Software: 1. Copy the archive file to a directory of your choice, extract all files and run the setup.exe application. 2. Follow the instructions and make selections as required on the setup windows selecting Next as required. Installation in the default location is suggested. 3. On the last window, select Close to complete the bq76940/bq76930/bq76920 software installation. 4.3 Interface Adapter The interface adapter I2C connector should be connected to the I2C connector for use with the bq76940 software. Board pull-up shunts must be installed for the EV2300 and removed for the EV2400. The interface adapter should not be connected to the I2C connector if a gauge or MCU is connected to the bus. 4.4 Software Operation This section describes connection of the communication interface to the EVM and operation of the software. Although the software runs without connection to a powered device, TI recommends having the device on when starting the software. Follow the directions in the quick start section. Figure 1 shows connections for operation with the GUI software. Start the software from the desktop shortcut bq769X0 Evaluation Software or the menu Start → All Programs → Texas Instruments → bq769X0 Eval Software When started, the software looks for the communication interface and the device. If either is not found, a popup window appears and must be acknowledged. When communication is established with the device, the main window appears as shown in Figure 3. The bq76940/bq76930/bq76920 software uses popup help tips on many of the control features. 10 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq76940/bq76930/bq76920 Software www.ti.com Figure 3. bq76940/bq76930/bq76920 Evaluation Software Display The software window contains a menu bar and 3 sections. The top section is an I2C tool. The middle section has 3 selectable views. The bottom section is a status section. Details are described in following sections. 4.4.1 Status Section The bottom section displays the software name and version, the CRC mode and the communication status. The CRC mode is automatically detected and the software communicates to the IC appropriately. To the right of the CRC mode is a communication status area which may display information about the communication with the device. Common displays and actions may include the following: • Data channel name is invalid. Check the USB connection to the interface board. Exit and re-start the software • No acknowledge from device. Check that the 4-pin cable is connected, the EVM is powered, and boot the device, then try to read the device. • CRC read from device does not match calculated CRC. Check that the Read Device button was used to detect the device. Check the connection of the 4-pin cable or its routing near high noise sources. • Not able to find a free communication adapter. Check the connection of the USB cable to the communication adapter. • USB adapter timeout. Unplug and re-connect the USB cable and try to read from the device again. • When the status area is blank, the last communication with the device was successful 4.4.2 I2C Section The top section of the window below the menu bar has the I2C address and a byte communication tool. The I2C address must be entered, the tool does not automatically detect the address. The default address is 0x08 which is the default address for the device on the EVM. If the AFE on the EVM has been changed to a different address, the address must be entered. The value is the 7 bit address and is shifted left 1 bit position when observed on the bus. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 11 bq76940/bq76930/bq76920 Software www.ti.com The byte communication tool is useful to read or write a register. It is present with all views. 4.4.3 Menu Commands The Help > About menu selection displays version information about the program. Other selections may provide additional help or links to documentation. The Options > Verify Writes selection allows selection of a readback of the registers once they are written. The View menu allows selection of the center window display. Options are the Registers, I2C Pro, or Sequence views. Views can also be selected with buttons on the left side of the window. The File menu allows exit of the program. 4.4.4 Registers View The registers view is shown in Figure 4 and is the default display in the middle of the window when the software is started. It shows the control, status and data register values. If another view is displayed it can be selected using the Registers button on the left side of the window or from the menu. Figure 4. Registers View The Read Device button at the top of the Registers view provides important setup of the bq76940/bq76930/bq76920 software and the IC. The software reads the factory gain and offset data from the device and populates these in the Stack V/T/I section for use in calculating display values. The software writes the CC_CFG register to its proper value and also detects the CRC mode of the device and sets the software appropriately. The control registers are shown in the center of the display in the All Read/Write Registers section. Bits are color coded as described in the section. Bits may be changed by clicking on the bit and selecting the Commit button in the Change value pop-up window. The default for the pop up window is to change the polarity of the bit. Since clearing status bits requires a write of 1, the Set bit high needs to be checked in the Change value pop-up window when clearing status register bits. A bit value change is displayed if the Options menu Verify Writes is selected. 12 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq76940/bq76930/bq76920 Software www.ti.com Control registers can also be changed as register values by writing in the value box to the right of the value box. Scan must be disabled to enter values. Register values may also be changed using the I2C byte write tool at the top of the window. Register changes are visible if the Verify Writes option is enabled. The display may also be updated using the Update Display button or selecting Scan. The All Read/Write Registers section contains 4 buttons to the right of the register display: • Update Display: This button reads all control and value registers and updates the values, bit breakout fields and control features. • Clear Faults: This button clears the status register. • Save Configuration: This button allows saving the displayed values of the control register to a file. A pop-up box allows selection of the file name. The default file location is C:\Users\\Documents\Texas Instruments\bq76940. • Load configuration: This button allows loading the control register values from a file. A pop-up box allows selection of the file, another pop up box lets you select whether to write the values to the device. If faults are not set in the status register value in the file, they are not cleared by the write. The Base Configuration section shown above the register detail provides convenient control of the Coulomb Counter, ADC, and Temperature Sensor selection as functional controls without locating the control bits. The Data Scanning section allows periodic read of the device and display of the register values. The Scan check box enables a periodic read when checked. The update interval is displayed and can be changed with the Change Interval button. The Logging section has the Start Logging button. The values read from the device can be saved to a file. Selecting the Start Logging button opens a bq76940 Logging popup window to enter the file name, comments and to select the data groups to be logged. The file name must be entered with the pop up window's Browse button. The scan interval can be changed, and the logging is actually started in the pop up window. When logging is active, the registers user interface cannot be used and the button changes to Stop Logging. Selecting the button stops the logging. Scan is not necessary before logging, it will start with logging and cannot be disabled during logging. The Stack V/T/I section is on the right side of the Registers view (Figure 4). The ADC Gain and Offset boxes show the values that are used for converting the register data into values. These value boxes are read only, they are updated by the values read from the device with the Read Device button. The Display raw data read from device below check box allows display of the hex register values rather than converted values. The V/T/I values are updated by the Read Device button, the Update Display button, or the Scan option. 4.4.5 I2C Pro View The I2C Pro view of the GUI is shown in Figure 5. The I2C Pro view is useful to read or write several sequential registers. If another view is displayed it can be selected using the I2C Pro button on the left side of the window or from the menu. The I2C Command box for each section specifies the starting register address for the transaction. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 13 bq76940/bq76930/bq76920 Software www.ti.com Figure 5. I2C Pro View 4.4.6 Sequence View The Sequence view of the GUI is shown in Figure 6. This is useful to send timed sequences of register reads or writes to the device. It can be selected using the Sequence button on the left side of the window or from the menu. A sequence can be run by selecting its Execute button. The results of the sequence are shown in the Sequence Dialog section. The sequence can be edited by selecting the file name under the sequence name in the window. 14 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq76940/bq76930/bq76920 Software www.ti.com Figure 6. Sequence View The installation comes with 3 sequence files. The Clear Faults files contain descriptions for requirements for a sequence file. The Set UV Trip... file shows an example of a simpler format. Sequence files are installed to: C:\Users\\Documents\Texas Instruments\bq76940\sequence. Sequences are loaded from this location when the program starts. Create new sequences with a text editor and save them with the .bqseq extension. Up to 8 sequences can be stored, move other sequences to another directory or change the extension. The sequences Sequence_Example.bqseq, Sequence Clear Faults.bqseq and UVTrip.bqseq are required, do not move them from the directory. Typical uses of a sequence might include: • Reading & clearing faults, then enabling CHG and DSG outputs • Setting ship mode • Setting a balance pattern • Any repetitive multiple-register write used in evaluation While sequences can be executed during logging, the logging is paused while the sequence executes. Long sequences will leave gaps in the log data. 4.4.7 Typical Operation of Software Typical operation of the software involves the following steps, much like described in the quick start section: • Connect the EVM and related equipment • Power the EVM • Boot the EVM • Start the software • Read and change registers as desired If the board is powered off during the evaluation process: SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 15 Battery Management Studio Software • • • • www.ti.com Power the EVM Boot the EVM Select the Read Device button Read and change registers as desired If the interface board is connected to a system already in operation, and the software has not been exited: • Select the Read Device button • Read and change registers as desired 4.4.8 Operation with Other Interfaces or Hosts The bq76940/bq76930/bq76920 software does not support other interface boards or adapters other than the EV2300 and EV2400. The software does not operate in a multi-master environment. If operated with another host on the line, data collisions can occur. Also be aware that the EV2400 has internal pull up resistors to 3.3 V, connecting to some shared busses could damage devices on that bus if the bus voltage differs. 5 Battery Management Studio Software The Battery Management Studio software is used for evaluation of the bq78350 gauge. It is also identified as bqStudio for a compact name. If an earlier version of the bqStudio software is already installed from another product evaluation, it should still be installed again to load the configuration files and tools specific to the current version of the bq78350. 5.1 System Requirements The bqStudio software requires a Windows 7, or later, operating system. Additional items are required and are described in the installation windows. The examples in this document are from Windows 7. 5.2 Installing bqStudio Find the latest software version in the tool folder http://www.ti.com/tool/bqstudio or search from power.ti.com. Check periodically for software updates. Use the following steps to install the bqStudio software: 1. Copy the archive file to a directory of your choice, extract all files and run the Battery Management Studio-xxxxxx-Setup.exe application. 2. Follow the instructions and make selections as required on the setup windows selecting Next, as required. TI recommends installing the software in the default location. 3. On the last window, select Finish to complete the bqStudio software installation. 5.3 Interface Adapter SMB The interface adapter SMB connector must be connected to the SMB connector of the EVM for use with the bqStudio software. Pull-ups for the SMBus are provided inside the adapter. The interface adapter should not be connected to the I2C connector of the EVM. 5.4 bqStudio Operation bqStudio is used to communicate to the bq78350 gauge for evaluation. It includes a number of tools to aid in configuration of the bq78350 for evaluation. bqStudio will not communicate with the AFE and the I2C connector of the EVM should not be connected while using bqStudio. Although the software runs without connection to an interface board or powered device, it is recommended to have both connected and the device on when starting the software. Follow the directions in the Gauge Quick Start section. Figure 2 shows connections for operation with the bqStudio software. Start the software from the desktop shortcut Battery Management Studio or the menu Start → All Programs → Texas Instruments → Battery Management Studio. 16 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Battery Management Studio Software www.ti.com When started, the software looks for the communication interface and the device. If the device is found, the registers will display such as in Figure 11. If the version is up to date the user may choose to proceed to other evaluation steps. If the device is not found, it opens the Figure 7. This is expected for a new EVM since the bq78350 is not programmed. Select the newest bq78350 version in the list and click the Finish button. This selection will be remembered until the software is re-started. If the device is not found, the user will be presented with a Proceed? popup window which must be acknowledged. If the software still can not find the device, a Battery Management Studio popup window appears indicating communication status. With a blank or un-powered part, this will indicate a timeout. Acknowledge the message to proceed. Figure 7. Target Selection Wizard If the software was started without a communication interface adapter, a Battery Management Studio popup window will indicate a free adapter is not available. Acknowledge the message to proceed. Errors will appear in the left bottom border of the Battery Management Studio screen. Correct the problem with the adapter and restart the software. When the software is first started in a new installation, a welcome view covers the main portion of the window. This offers an overview or tutorials of the software. After reviewing any desired content, close the welcome view. If it is desired to see this again, the welcome view can be opened from the menu selection Help | Welcome. bqStudio contains a user guide for general operation of the software. Refer to the menu selection Help | Help Contents for information. Once the welcome view is closed, the bqStudio window appears as shown in Figure 8. The register area is blank since communication with the blank device on the EVM does not provide data. The register area will also appear blank if the EVM is powered off. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 17 Battery Management Studio Software www.ti.com Figure 8. bqStudio Window with Blank Gauge 5.5 Firmware Programming If the gauge is blank or an update is needed, firmware must be programmed to the bq78350 mounted to the EVM before operation. EV2400 versions before 0.18 should not be used to program firmware. Firmware is programmed using the Firmware view shown in Figure 9. Click on the Browse button and select the file to be programmed. Using the Execute after programming feature is recommended. Click on the Program button to start programming. A Progress Information window will display during programming and will close when complete. Programming typically takes about 45 s. 18 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Battery Management Studio Software www.ti.com Figure 9. Firmware View After programming, restart the bqStudio software so that it will autodetect the new firmware and load the proper configuration for the tools. After start with autodetection, the dashboard display should show the version read from the device rather than a version input from the Target Selection Wizard. An example of the dashboard display is shown in Figure 10. If the version read by the autodetect is the same as the version previously selected in the Target Selection Wizard, no change may be apparent, but restarting to allow tool configuration is still recommended. Figure 10. Dashboard Adapter and Device Version Display The default configuration of the firmware is for 3 cells. An example of the register view after restart is shown in Figure 11. Note that 3 cell voltages are present. The device must be configured for operation with other cell counts, this includes basic operation of the EVM. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 19 Battery Management Studio Software www.ti.com Figure 11. Register View After Restart 5.6 Data Memory Configuration Most of the configuration of the bq78350 is accomplished through setting values in data memory. The data memory is accessed using the Data Memory view. Configuration values are orgainized in functional groups selected by buttons on the left side of the view. Data values may be changed by selecting and entering a value. Parameter registers which are bit fields may be changed by selecting the bit in the pop up when the register or its value is selected. Figure 12 shows the bit field for the AFE Cell Map which is one of the most basic settings that must typically be changed with the EVM. The AFE Cell Map is a physical location of the cells. Refer to the bq78350-R1 TRM (SLUUBD3) for information on this and other configuration parameters. Data Memory must be written after change. See other technical documents in the bq78350-R1 product folder www.ti.com/product/bq78350-R1, The Export tool in the Data Memory view allows saving the configuration data to a comma-separatedvalue file format which can be accessed by a spreadsheet program. Reading data before export will save the data from the part rather than values which may be only in the view. The Import tool allows loading such a file into the view so that it can be written to the device. 20 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Battery Management Studio Software www.ti.com Figure 12. Data Memory Bit Field change 5.7 Chemistry View The bq78350 uses the chemistry of the cells to estimate the state of charge of the pack after a reset. Chemistry information is not loaded to the device as a Data Memory parameter but by using the Chemistry view. Loading the chemistry is not required for simple operation of the EVM but will be desired for setup of the board or a part for operation with cells, particularly if the chemistry differs from the default. The chemistry view is shown in Figure 13. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 21 Battery Management Studio Software www.ti.com Figure 13. Chemistry View 5.8 Calibration The EVM and all new boards should be calibrated before operation. The calibration view is shown in Figure 14. Temperature is typically calibrated first. Current Offset should be calibrated with no current flow and should be calibrated before Current Gain. The EVM uses a 1-mΩ sense resistor and calibration at low current will result in some granularity from the current resolution. This may result in an apparent error at higher currents. Calibration at higher currents will reduce this effect and should be done where it is important. By default, the bq78350 uses the average cell voltage for gauging. This voltage must be calibrated. Measure the battery voltage, calculate the average cell value and enter the value in the box. Clicking the Calibrate Voltage button runs the calibration. Values left blank or entered as '0' are not calibrated. When successful, a green check appears next to the button as shown in Figure 15. If there is an error, a red X appears instead with a message. The bq769x0 contains factory voltage calibration data for cell voltage values. The bq78350 uses this data to determine the individual cell voltage. When it is desired to calibrate each cell's offset rather than relying on the average stored in the bq769x0, individual cell voltages can be measured and calibrated. Cells can be calibrated in groups or individually by entering or clearing the desired values. Basic steps for calibration of the EVM is described in the quick start section. Since the EVM uses 1% values for the cell simulator resistors, measuring each cell voltage value is recommended rather than using a common value if individual cell voltage calibration is desired. 22 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Battery Management Studio Software www.ti.com Figure 14. Calibration View Figure 15. Example Voltage Calibration Successful SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 23 Battery Management Studio Software 5.9 www.ti.com Device Control Features are controlled by commands as described in the bq78350-R1 TRM (SLUUBD3). One of the most basic for operation as described in the quick start section is the FET enable which is toggled by the ManufacturerAccess() 0x0022 command. The Manufacturer Access commands may be sent using the Advanced Comm SMB view and the Write Word button. An example is shown in Figure 16. A number of the common commands are also available in buttons in the Commands view. Using the commands the gauge may be controlled for test or setup for further evaluation. Refer to the bq78350-R1 TRM for additional information on the commands. Figure 16. Advanced Comm SMB View 6 bq769x0 Circuit Module Use The bq769x0 circuit module contains the bq769x0 IC and related circuitry to demonstrate the features of the IC. Surface mount FETs are provided for the high current path. Thermistors provide for temperature sensing on the board, 2 on the bq76930EVM, 3 on the bq76940EVM. Other components provide support for the IC and connections to the board. Basic operation is described in the quick start guide. For details of the circuit, refer to the physical construction section. Additional details may be described in the following subsections. 6.1 Cell Simulator The EVM includes a resistive cell simulator made up of 200 ohm series resistors. The top section of the switch S3 connects the BATT+ node to the top of the resistor string. The bottom of the resistor string is connected to BATT-. The individual cell taps are connected to the cell monitor signals by other sections of the dip switch. When operating with a power supply all switch sections should be closed. When operating with cells, all the dip switch sections should be open to prevent loading the cells and discharging the battery. The cell simulator resistors are located on the bottom of the board. These may become warm during operation. The orange LED near the dip switch indicates the cell simulator has power either from the BATT+ or cell inputs. 24 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq769x0 Circuit Module Use www.ti.com 6.2 Minimum Operating Voltage The minimum operating voltage for the EVM is listed in the characteristics table is much higher than the minimum operating voltage since the EVM requires a sufficient VC5X voltage to provide a suitable REGSRC voltage to drive the DSG and CHG signals. The board can be operated at lower voltage to read cell voltages if the power FETs are not used. When the board is to be operated with low cell counts, provide an adequate REGSRC voltage to prevent damage to the board. When appropriate, R75 may be removed and installed at R74 for a higher REGSRC voltage, or Q14 bypassed at the J10 test point pattern. Modification of the board limits its voltage range. CAUTION Do not operate the board with current below the minimum operating voltage. If modified for low voltage operation, do not operate the board at its normal upper voltage limit. Operation of the board with voltages outside the operating range of the components on the board can damage the circuit module. 6.3 Evaluating with Simulated Current The quick start guide describes connection for basic operation. Providing more than recognizable current in that configuration can require a power supply with a significant power rating. Applying a charge current can damage some power supplies. Figure 17 shows a method to force current through the control path without a high wattage power supply or special equipment. The load power supply should be set at a low voltage in a constant current mode. Polarity can be reversed on the load supply to simulate a charge current. The battery supply should never be reversed. The diagram shows communication connection for AFE evaluation, the technique will also work for gauge evaluation with appropriate communication connection. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 25 bq769x0 Circuit Module Use www.ti.com Figure 17. Simulating Current Setup The power supply technique can also be used with the bq78350 to provide current for calibration or to show current flow. However the simulated current will not provide good gauging evaluation. 6.4 Reducing the Cell Count Cell count can be reduced for basic evaluation by shorting unused cells at the input terminal block. Follow the recommendations in the datasheet for which cells to short. This works for both operation with the cell simulator and with cells, but can have some side effects in transient tests because it parallels the input and balance FET gate resistors of the used and unused inputs to the IC where the capacitor provides a signal path to the used input. See Figure 18 for an example of simple reduced cell configuration for 8 cells. For the best evaluation with reduced cells in a transient environment, short the VCx pins at the capacitor or VCx test points and remove the unused cell's input resistor and balance FET gate resistor. When using the cell simulator, shorting the unused cell input terminals is still required to eliminate the simulated cell voltage. Shorting the cell inputs at the terminal block screw terminals is suggested since it should be apparent if the board is reused for a different cell count. Table 3 shows configuration recommendations for reduced cell count. Table 3. Reducing Cell Count Unused Cell (Numbered from Bottom, Bottom = Cell 1) Short Cell Terminals Input and Balance FET Gate Resistors to Remove Short AFE Inputs Cell 14 C14 to C13 R65, R70 VC14 to VC13 Cell 13 C13 to C12 R66, R71 VC13 to VC12 26 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq769x0 Circuit Module Use www.ti.com Table 3. Reducing Cell Count (continued) Unused Cell (Numbered from Bottom, Bottom = Cell 1) Short Cell Terminals Input and Balance FET Gate Resistors to Remove Short AFE Inputs Cell 9 C9 to C8 R23, R33 VC9 to VC8 Cell 8 C8 to C7 R24, R34 VC8 to VC7 Cell 4 C4 to C3 R28, R38 VC4 to VC3 Cell 3 C3 to C2 R29, R39 VC3 to VC2 When evaluating the gauge, it is recommended to reduce the cell count of the gauge configuration before connecting the cells. If the gauge does not see voltage it will shut down the AFE and require re-boot of the board. To avoid shutdown simulate a charge current until the cell count configuration can be corrected. See table for reduced cell configuration 8 cells shown Short C9 to C8 and C4 to C3 Simple evaluation, allows easy cell count change but leaves parallel paths to IC Cell simulator switches on DC Power Supply + - Figure 18. Example 8 Cell Simple Evaluation Configuration 6.5 Connecting Cells The EVM is constructed to sense the cell voltages at the cells. Separate wires are required from the bottom of the battery stack to the C0 connection at the terminal block for sensing voltage and from the bottom of the battery stack to the BATT- terminal to carry the load current. The AFE IC VSS is referenced to the BATT- connection. Similarly, separate wires are required from the top of the battery stack to the top cell input of the terminal block and from the top of the battery stack to the BATT+ terminal to carry the load current. The top cell sense connection also powers the AFE IC. To move the top sense connection from the cells to the board, R51 could be populated on the bq76940EVM, or R50 could be populated on the bq76930EVM. To move the bottom cell sense to the cells, R1 could be populated, or leave the bottom cell simulator switch section closed to connect C0 to BATT-. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 27 bq769x0 Circuit Module Use www.ti.com The cell simulator provides resistors between the cell inputs. These resistors can help divide the voltage as cells are connected. If desired, the cell simulator switches can be closed during cell connection and opened after cell connection. The switches must be opened after connection of cells or the cells are discharged by the constant drain of the cell simulator. If you see the orange LED on when cells are connected, open the dip switch sections to remove the load. Cell connection is generally considered safest from the bottom up. This minimizes the step size of the voltage applied to the board. Recommended connection sequence for the EVM when connecting wires individually is bottom up: 1. Connect BATT2. Connect cells bottom up, C0, C1, C2 ... 3. Connect BATT+ 4. Open the cell simulator switches, if needed When the top and bottom cells are connected on the board: 1. Connect BATT- (includes C0) 2. Connect cells bottom up; C1, C2, C3... 3. Connect BATT+ (includes top cell) 4. Open the cell simulator switches, if needed When cells are mated with a connector or connectors such as on the EVM: 1. Connect BATT- or the node which connects VSS of the AFE, if separate 2. Mate the connector for the lower cells 3. Mate the connector for the upper cells, if separate 4. Connect the BATT+, if separate 5. Open the cell simulator switches, if needed Figure 19 shows an example connecting cells with an EVM configuration reduced to 9 cells. 28 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated bq769x0 Circuit Module Use www.ti.com See table for reduced cell configuration 9 cells shown Short VC9 to VC8 Remove R23 and R33 Short C9 to C8 Open switches to avoid draining cells If connecting cells confirm operation before connecting. Use all appropriate fusing, insulation, isolation and shielding necessary for safe operation. Board has exposed contacts. Do not leave unattended Figure 19. Example Connection With 9 Cells When using external balancing with P-channel MOSFETs, such as on the bq76930 and bq76940 EVMs, the inrush current for a cell can momentarily turn on the balance FET causing the next cell input below to rise. This can continue down the stack. Connecting C0 to BATT- on the board by closing the C0 cell simulator dip switch during cell connection can reduce stress on the VC0 input of the AFE. The switch can be opened after cell connection for sensing at the cell. 6.6 Connecting to a Host After initial operation of the AFE with the bq76940/bq76930/bq76920 software, it may be desirable to operate the board connected to a microcontroller board. J14 can be used to connect to the microcontroller board. No voltages should be applied to the gauge terminals. Alternately, the microcontroller could be connected to the signal test points or J8 and the ALERT test point. The interface voltage for the installed AFE IC is 2.5 V. Be sure the MCU will operate at 2.5V or provide separate power for the MCU and shift the level of the interface signals if needed. Pull-ups may not be required on the EVM if they are provided on the MCU. Although it was developed for 10 cells, TIDA-00449 implements an example host for the bq76930 family member of the AFE using the MSP430. The code is available for the TI Design and may be a helpful reference in development of a host system. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 29 bq769x0 Circuit Module Use www.ti.com Figure 20. Host Connection Concept 6.7 Gauge Circuits The EVM contains a gauge circuit consisting of U2 and an SMBus interface connector, J14. This bq78350 IC and circuit can be used to control the AFE if configured and connected at the J12 header. By default the AFE on the EVM is a 2.5V output device, only connect the gauge circuitry to a 2.5-V output AFE IC. Shunts may be placed on the /KEYIN and /PRES headers to simulate control of these signals. An alternate SMBus address may be selected using the Addr select header. Refer to the bq78350 TRM for details and configuration selections for these device features. The BV header typically has a shunt on the H position for the full number of supported cells. When the cell count or maximum cell voltage is reduced, refer to the schematic and the bq78350 documents for alternate positions which may better use the 1 V input range of the BAT pin. Making a selection which would exceed the 1V limit is not recommended. 6.8 Unused Components The EVM contains a number of component patterns which may be useful for evaluation. Test points are not typically populated. The patterns may be used as probe points or wires or test points can be soldered to provide probing if desired. The Q1 and Q3 patterns are for parallel power FETs. A heatsink pattern is provided at each power FET position (HS1 - HS4) for optional heatsink attachment. Other heatsink options may be available in the evaluation environment. D4 is a flyback diode to prevent PACK- from rising significantly above PACK+. The D5 pattern provides a place to mount a higher current diode or other transient suppression component. D16 to D21 and D32 to D37 are patterns for Schottky diodes. When the battery is short circuited, the cell voltages will drop and the inputs are pulled below the group power reference pin and current flows from the inputs. If this causes problems, diodes at these locations would conduct to prevent high current from the input pins. These were not needed in EVM testing. 30 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com The ALERT line will switch high and low in normal operation as status bits are asserted and cleared. A large load is not desired, since it consumes power. If it is useful to slow the transition, the pattern C20 is available. C20 should not be large to avoid current and slowing the edge to where the bq769x0 would see the ALERT high as an input and set the OVRD_ALERT condition. Normally the power filter components (Rf and Cf in the datasheet) R57-59 and C34-C36 keep the supply voltage for the AFE cell groups in a safe operating range. For situations with large transients, the D38-40 patterns provide positions for clamp diodes, if needed. The pattern is large and it may be easy to fit other component sizes, if needed. Be aware that if the system transients are large enough that a clamp is needed at the supply pins, the cell inputs should also be inspected for excessive voltages and an improved filter or clamp be added there, if needed. The REGSRC pin also has the D42 pattern as a provision for a clamp diode. REGSRC is referenced to a filtered node by the gate of Q14 and should not normally have transients which need clamping. R60-62 and R79 are current measurement shunt resistors. Current into the power pins of U1 can be determined by measuring the voltage across these resistors at the related test points and dividing by the resistance (100). These resistors are populated on the EVM but could be shorted or combined with other series resistance when using the EVM as a reference for a circuit design. Q21 is an alternate transistor pattern for Q20 when a lower power transistor is suitable such as when using fewer LEDs or lower voltage. R91 and R92 are options to pull down unused output pins on U2 J13, C38, R80, R81, R83, R88, R93, R98, R99, R100 and R113 provide patterns to bring signals to a convenient location for evaluation of optional external high side switching 7 Circuit Module Physical Construction This section contains the PCB layout, bill of materials and schematic of the bq76930EVM and bq76940EVM circuit modules. The circuit board is common to the 2 different assemblies. 7.1 Board Layout The bq76930EVM and bq76940EVM circuit modules are assembled on a common 4.0-in × 6.0-in, 4-layer circuit board. It is designed for easy connection with cell connections on the left side to a terminal block and high-current screw terminals. Control connections are on the left top. Pack terminals are on the right side using screw terminals. Wide trace areas are used to reduce voltage drops on the high current paths. The EVM layout and construction allows easy understanding of the connections and access to the test points for evaluation, but the connector area and programming features result in a large board. The board layout includes spark gaps with the reference designator prefix "E". These spark gaps are fabricated with the board and no component is installed. The design includes spark gap E1 across the power FETs. Contamination on the board or shorting of the pattern could bypass the power FETs and E1 is not recommended. The board layout includes spark gaps with the reference designator prefix "E". These spark gaps are fabricated with the board and no component is installed. The design includes spark gap E1 across the power FETs. Contamination on the board or shorting of the pattern could bypass the power FETs and E1 is not recommended. See additional information in the configuration and operation sections of this document. Figure 21 to Figure 26 show the board layout. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 31 Circuit Module Physical Construction www.ti.com Figure 21. Top Silk Screen 32 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Figure 22. Top Layer SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 33 Circuit Module Physical Construction www.ti.com Figure 23. Layer 2 34 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Figure 24. Layer 3 SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 35 Circuit Module Physical Construction www.ti.com Figure 25. Bottom Layer 36 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Figure 26. Bottom Silk Screen SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 37 Circuit Module Physical Construction 7.2 7.2.1 www.ti.com bq76930EVM Circuit Module bq76930EVM Assembly The bq76930EVM supports 10 cells on the board which can support 15. The bq7693000 is aligned with pin 1 of the U1 board pattern. Components to support the upper cells are not installed. Figure 27 and Figure 28 show the bq76930EVM assembly. Figure 27. bq76930EVM Top Assembly 38 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Figure 28. bq76930EVM Bottom Assembly SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 39 Circuit Module Physical Construction 7.2.2 www.ti.com bq76930EVM Bill of Materials The bill of materials for the bq76930EVM circuit module is shown in Table 4. Table 4. bq76930EVM Circuit Module Bill of Materials Designator Qty !PCB1 1 Part Number MFR Alt. Part Number Alt. MFR PWR524 Any - C1, C2, C3, C40, C41, C42 6 0.1uF CAP, CERM, 0.1uF, 50V, +10/%, X7R, 0603 - 0603 GCM188R71H104KA57B MuRata C4, C5, C6, C7 4 0.1uF C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C21, C23 14 1uF CAP, CERM, 0.1uF, 100V, +/-10%, X7R, 0603 0603 GRM188R72A104KA35D MuRata CAP, CERM, 1uF, 16V, +10/%, X7R, 0805 0805 GRM21BR71C105KA01L MuRata C25, C26 2 C27 1 4700pF CAP, CERM, 4700pF, 50V, +/-10%, X7R, 0805 0805 08055C472KAT2A AVX 4.7uF CAP, CERM, 4.7uF, 10V, +10/%, X7R, 0805 0805 GRM21BR71A475KA73L C34, C35 MuRata 2 10uF CAP, CERM, 10uF, 35V, +/-10%, X7R, 1210 1210 GRM32ER7YA106KA12L MuRata C37 1 1uF CAP, CERM, 1uF, 50V, +/-10%, X7R, 1206 1206 GRM31MR71H105KA88L MuRata C39 1 3300pF CAP, CERM, 3300pF, 25V, +/-10%, X7R, 0603 0603 GRM188R71E332KA01D MuRata D1 1 45V Diode, TVS, Uni, 45V, 1500W, SMC SMC SMCJ45A Fairchild Semiconductor D2, D22, D23, D41, D46 5 100V Diode, Ultrafast, 100V, 0.15A, SOD-123 SOD-123 1N4148W-7-F Diodes Inc. D3, D45, D47 3 16V Diode, Zener, 16V, 500mW, SOD-123 SOD-123 MMSZ5246B-7-F Diodes Inc. D4 1 600V Diode, Ultrafast, 600V, 3A, SMC SMC MURS360T3G ON Semiconductor D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D25, D26, D43, D44, D53, D54 16 5.6V Diode, Zener, 5.6V, 200mW, SOD-323 SOD-323 MMSZ5232BS-7-F Diodes Inc. D48, D49, D50, D51, D52 5 Green LED, Green, SMD 1.6x0.8x0.8mm LTST-C190GKT Lite-On D55 1 Orange LED, Orange, SMD 1.6x0.8x0.8mm LTST-C190KFKT Lite-On D56 1 6.8V Diode, Zener, 6.8V, 500mW, SOD-123 SOD-123 MMSZ5235B-7-F Diodes Inc. H1, H2, H3, H4 4 Bumpon, Hemisphere, 0.375 X 0.235, Black Black Bumpon SJ61A2 3M J1, J2, J3, J4 4 TERMINAL SCREW PC 30AMP, TH 12.9x6.3x7.9 mm 8199 Keystone J5 1 Header, 3.5mm, 11POS, R/A, TH 39.90x7.03x9.33 mm 395021011 Molex J6, J7, J11, J12 4 Header, 100mil, 2x1, Tin plated, TH Header, 2 PIN, 100mil, Tin PEC02SAAN Sullins Connector Solutions J8, J17 2 Header, 100mil, 4x1, R/A, TH 4x1 R/A Header 22-05-3041 Molex J14 1 Header, 100mil, 5x2, Tin plated, TH Header, 5x2, 100mil, Tin PEC05DAAN Sullins Connector Solutions J15 1 Header, 100mil, 3x2, Tin, TH 3x2 Header PEC03DAAN Sullins Connector Solutions J16 1 Header, 100mil, 3x1, Tin plated, TH Header, 3 PIN, 100mil, Tin PEC03SAAN Sullins Connector Solutions LBL1 1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per roll PCB Label 0.650"H x 0.200"W THT-14-423-10 Brady - - P1 1 CONN TERM BLOCK 3.5MM 11POS R/A Term Block Plug 39500-0011 Molex Connector Corporation 1840450 Phoenix Contact Q2, Q4 2 100V MOSFET, N-CH, 100V, 18A, DDPAK DDPAK AOB290L AOS None Q5, Q15 2 -100V MOSFET, P-CH, -100V, -0.6A, SOT-23 SOT-23 ZXMP10A13FTA Diodes Inc. None Q6, Q7, Q8, Q9, Q10 5 20V MOSFET, P-CH, 20V, 0.83A, FDY1002PZ Fairchild Semiconductor None 40 Value Description Package Reference Printed Circuit Board bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Table 4. bq76930EVM Circuit Module Bill of Materials (continued) Designator Qty Value Description Package Reference Part Number MFR Q14, Q22 2 100V MOSFET, N-CH, 100V, 0.19A, SOT-23 SOT-23 BST82,215 NXP Semiconductor Q16, Q17 2 100V MOSFET, N-CH, 100V, 0.17A, SOT-23 SOT-23 BSS123 Fairchild Semiconductor Q18 1 0.5V Transistor, PNP, 300V, 0.2A, SOT-23 SOT-23 MMBTA92 Fairchild Semiconductor Q19 1 50V MOSFET, N-CH, 50V, 0.22A, SOT-23 SOT-23 BSS138 Fairchild Semiconductor Q20 1 0.21V Transistor, NPN, 20V, 5.25A, SOT-89 SOT-89 ZXTN19100CZTA Diodes Inc. R2, R4, R44, R45, R46, R47, R61, R62, R79, R82, R83, R89, R90, R114, R115, R118, R119 17 100 RES, 100 ohm, 1%, 0.125W, 0805 0805 CRCW0805100RFKEA Vishay-Dale R3 1 0.001 RES, 0.001 ohm, 1%, 2W, 4527 4527 WSR21L000FEA Vishay-Dale R5, R8, R9, R104, R111, R116, R117 7 1.00Meg RES, 1.00Meg ohm, 1%, 0.125W, 0805 0805 CRCW08051M00FKEA Vishay-Dale R6, R87, R123 3 0 RES, 0 ohm, 5%, 0.125W, 0805 0805 CRCW08050000Z0EA Vishay-Dale R7, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R58, R59 15 1.00k RES, 1.00k ohm, 1%, 0.125W, 0805 0805 CRCW08051K00FKEA Vishay-Dale R10, R11, R12, R13, R14, R15, R16, R17, R18, R19 10 100 RES, 100 ohm, 1%, 0.25W, 1206 1206 CRCW1206100RFKEA Vishay-Dale R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R48, R49, R108, R112 14 10.0k RES, 10.0k ohm, 1%, 0.125W, 0805 0805 CRCW080510K0FKEA Vishay-Dale R42 1 499k RES, 499k ohm, 1%, 0.125W, 0805 0805 CRCW0805499KFKEA Vishay-Dale R43 1 3.01k RES, 3.01k ohm, 1%, 0.125W, 0805 0805 CRCW08053K01FKEA Vishay-Dale R75, R78, R101, R103, R107, R109 6 100k RES, 100k ohm, 1%, 0.125W, 0805 0805 CRCW0805100KFKEA Vishay-Dale R77, R129, R130, R131, R132, R133, R134, R135, R136, R137, R138 11 200 RES, 200 ohm, 1%, 0.125W, 0805 0805 CRCW0805200RFKEA Vishay-Dale R86 1 0 RES, 0 ohm, 5%, 0.25W, 1206 1206 CRCW12060000Z0EA Vishay-Dale R94 1 300k RES, 300k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-304-B-T5 Susumu Co Ltd R95, R97 2 100k RES, 100k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-104-B-T5 Susumu Co Ltd R96, R102 2 11.3k RES, 11.3k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-1132-B-T5 Susumu Co Ltd R105 1 5.6k RES, 5.6k ohm, 5%, 1W, 2512 2512 ERJ-1TYJ562U Panasonic R106 1 196k RES, 196k ohm, 1%, 0.125W, 0805 0805 CRCW0805196KFKEA Vishay-Dale R110, R122 2 49.9k RES, 49.9k ohm, 1%, 0.125W, 0805 0805 CRCW080549K9FKEA Vishay-Dale R120 1 221k RES, 221k ohm, 1%, 0.125W, 0805 0805 CRCW0805221KFKEA Vishay-Dale R121 1 698 RES, 698 ohm, 1%, 0.125W, 0805 0805 CRCW0805698RFKEA Vishay-Dale RT1, RT2 2 10.0k ohm Thermistor NTC, 10.0k ohm, 1%, Disc, 5x8.4 mm Disc, 5x8.4 mm 103AT-2 SEMITEC Corporation S1, S2 2 Switch, Tactile, SPST-NO, 0.05A, 12V, SMT SW, SPST 6x6 mm 4-1437565-1 TE Connectivity S3 1 Switch, SPST 9Pos, Rocker, TH 9.65X8X24.9mm 76SB09ST Grayhill S4 1 Switch, SPST 8Pos, Rocker, TH 9.65X8X22.4mm 76SB08ST Grayhill SH-J6, SH-J7, SH-J11, SH-J12, SH-J14-3, SH-J14-5, SH-J14-7, SH-J14-9, SH-J15-5, SH-J16-3 10 1x2 Shunt, 100mil, Gold plated, Black Shunt 969102-0000-DA 3M TP3, TP4, TP5, TP6 4 Black Test Point, TH, Multipurpose, Black Keystone5011 5011 Keystone SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Alt. Part Number Alt. MFR None None None None None SNT-100-BK-G Samtec bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 41 Circuit Module Physical Construction www.ti.com Table 4. bq76930EVM Circuit Module Bill of Materials (continued) Designator Qty Value Description Package Reference Part Number MFR TP48, TP49 2 Yellow Test Point, Multipurpose, Yellow, TH Yellow Multipurpose Testpoint 5014 Keystone U1 1 µC-Controlled AFE Family for 5/10/15/16 Series Cell Lithium-Ion and Phosphate Battery Pack Applications, DBT0030A DBT0030A BQ7693000DBT Texas Instruments None U2 1 CEDV Fuel Gauge and Battery Management Controller Companion to the bq769x0 AFE, DBT0030A DBT0030A BQ78350DBT-R1 Texas Instruments None W1 1 Cable assembly, 4 pin Assembly CBL002 Texas Instruments C20 0 470pF CAP, CERM, 470pF, 50V, +/-10%, X7R, 0805 0805 08055C471KAT2A AVX C22, C28, C29, C30, C31, C32, C33 0 1uF CAP, CERM, 1uF, 16V, +10/%, X7R, 0805 0805 GRM21BR71C105KA01L MuRata C24 0 4700pF CAP, CERM, 4700pF, 50V, +/-10%, X7R, 0805 0805 08055C472KAT2A AVX C36 0 10uF CAP, CERM, 10uF, 35V, +/-10%, X7R, 1210 1210 GRM32ER7YA106KA12L MuRata C38 0 3300pF CAP, CERM, 3300pF, 25V, +/-10%, X7R, 0603 0603 GRM188R71E332KA01D MuRata D5 0 600V Diode, Ultrafast, 600V, 8A, TH TO-220AC MUR860G ON Semiconductor D16, D17, D18, D19, D20, D21, D32, D33, D34, D35, D36 0 0.8V Diode, Schottky, 30V, 0.2A, SOD-123 SOD-123 BAT54T1G ON Semiconductor D24 0 100V Diode, Ultrafast, 100V, 0.15A, SOD-123 SOD-123 1N4148W-7-F Diodes Inc. D27, D28, D29, D30, D31 0 5.6V Diode, Zener, 5.6V, 200mW, SOD-323 SOD-323 MMSZ5232BS-7-F Diodes Inc. D37 0 Diode, Schottky, 30V, 0.2A, SOD-123 SOD-123 BAT54T1G ON Semiconductor D38, D39, D40, D42 0 Diode, TVS, Uni, 30V, 600W, SMB SMB SMBJ30A-13-F Diodes Inc. E1, E2, E3, E4, E5, E6, E7, E8 0 Spark gap. There is nothing to buy or mount. Spark gap N/A N/A FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A HS1, HS2, HS3, HS4 0 Heatsink, DDPAK/TO-263, SMT Heatsink, DDPAk 573300D00010G Aavid J9 0 Header, 3.5mm, 5POS, R/A, TH 19.03x7.03x9.33 mm 395021005 Molex J10 0 Header, TH, 100mil, 3x1, Gold plated, 230 mil above insulator TSW-103-07-G-S TSW-103-07-G-S Samtec, Inc. J13 0 Header, TH, 100mil, 7x1, Gold plated, 230 mil above insulator 7x1 Header TSW-107-07-G-S Samtec J18, J19 0 Header, TH, 100mil, 5x1, Gold plated, 230 mil above insulator TSW-105-07-G-S TSW-105-07-G-S Samtec, Inc. J20 0 Header, TH, 100mil, 6x1, Gold plated, 230 mil above insulator TSW-106-07-G-S TSW-106-07-G-S Samtec, Inc. P2 0 CONN TERM BLOCK 3.5MM 5POS R/A Term Block Plug 39500-0005 Molex Connector Corporation Q1, Q3 0 100V MOSFET, N-CH, 100V, 18A, DDPAK DDPAK AOB290L AOS Q11, Q12, Q13 0 20V MOSFET, P-CH, 20V, 0.83A, FDY1002PZ Fairchild Semiconductor Q21 0 0.7V Transistor, NPN, 65V, 0.1A, SOT-23 SOT-23 BC846BLT1G ON Semiconductor R1, R50, R51 0 0 RES, 0 ohm, 5%, 0.125W, 0805 0805 CRCW08050000Z0EA Vishay-Dale R52, R53, R54, R55, R56 0 100 RES, 100 ohm, 1%, 0.25W, 1206 1206 CRCW1206100RFKEA Vishay-Dale R57, R63, R64, R65, R66, R67, R68, R80, R81, R98, R99, R113 0 1.00k RES, 1.00k ohm, 1%, 0.125W, 0805 0805 CRCW08051K00FKEA Vishay-Dale R60 0 100 RES, 100 ohm, 1%, 0.125W, 0805 0805 CRCW0805100RFKEA Vishay-Dale R69, R70, R71, R72, R73 0 10.0k RES, 10.0k ohm, 1%, 0.125W, 0805 0805 CRCW080510K0FKEA Vishay-Dale 42 bq76930 and bq76940 Evaluation Module User's Guide Alt. Part Number Alt. MFR - - - None None None None SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Table 4. bq76930EVM Circuit Module Bill of Materials (continued) Designator Qty Value Description Package Reference Part Number MFR R74 0 100k RES, 100k ohm, 1%, 0.125W, 0805 0805 CRCW0805100KFKEA Vishay-Dale R76, R124, R125, R126, R127, R128 0 200 RES, 200 ohm, 1%, 0.125W, 0805 0805 CRCW0805200RFKEA Vishay-Dale R84 0 300k RES, 300k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-304-B-T5 Susumu Co Ltd R85 0 0 RES, 0 ohm, 5%, 0.25W, 1206 1206 CRCW12060000Z0EA Vishay-Dale R88, R93 0 100k RES, 100k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-104-B-T5 Susumu Co Ltd R91, R92, R100 0 1.00Meg RES, 1.00Meg ohm, 1%, 0.125W, 0805 0805 CRCW08051M00FKEA Vishay-Dale RT3 0 10.0k ohm Thermistor NTC, 10.0k ohm, 1%, Disc, 5x8.4 mm Disc, 5x8.4 mm 103AT-2 SEMITEC Corporation TP1 0 Black Test Point, TH, Multipurpose, Black Keystone5011 5011 Keystone TP2, TP14 0 Red Test Point, TH, Multipurpose, Red Keystone5010 5010 Keystone TP7, TP8, TP10, TP11, TP13, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22, TP23, TP24, TP25, TP26, TP27, TP28, TP29, TP30, TP31, TP32, TP33, TP34, TP35, TP36, TP40, TP41, TP42, TP43, TP44, TP45, TP52, TP56, TP57, TP58, TP60 0 White Test Point, TH, Multipurpose, White Keystone5012 5012 Keystone TP50 0 Yellow Test Point, Multipurpose, Yellow, TH Yellow Multipurpose Testpoint 5014 Keystone Alt. Part Number Alt. MFR Notes: Unless otherwise noted in the Alternate Part Number and/or Alternate Manufacturer columns, all parts may be substituted with equivalents. SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 43 Circuit Module Physical Construction 7.2.3 www.ti.com bq76930EVM Schematic Figure 29 through Figure 33 illustrate the bq76930EVM schematic. The bq7693000 shows pin numbers for the IC, not for the board. Pins 16 through 30 of U1 align with pins 30 through 44 of the board. DNP CHG DSG CHG TP11 Q5 ZXMP10A13FTA -100V DNP GND TP10 R7 1.00k R6 0 1N4148W-7-F HS1 HS3 DNP R8 1.00Meg DNP D2 100V SRP C0 DNP DNP TP7 TP9 SRN TP8 R5 1.00Meg C2 C1 R1 DNP 0 0.1µF TP3 TP4 TP5 0.1µF R2 100 R4 100 573300D00010G DNP TP1 NT1 8199 Input 0 - 66V or 0 - 44V 15A + PACK- J3 DNP Q1 AOB290L 100V GND BATT- 1 TP13 0.001 Net-Tie D1 SMCJ45A 45V Q3 AOB290L 100V DNP R3 BATT- D3 MMSZ5246B-7-F 16V 573300D00010G Q2 AOB290L 100V TP6 GND 1 R9 1.00Meg DNP GND J1 DNP DNP TP12 573300D00010G HS4 DNP C3 0.1µF GND 573300D00010G HS2 C4 0.1µF PFD 8199 Q4 AOB290L 100V C5 0.1µF C6 0.1µF D4 DNP D5 600V MUR860G MURS360T3G 600V E2 C7 0.1µF Output 0 - 66V or 0 - 44V 15A + J4 1 BATT+ J2 1 DNP 8199 E1 BATT+ BATT+ TP2 DNP TP14 8199 Figure 29. bq76930EVM Schematic Diagram FETs 44 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com R22 4 D7 3 1 D8 100 4 Q7B FDY1002PZ 5 20V 100 1 D10 C13 1µF 10.0k VC15 VC14 VC13 VC12 VC11 VC10B D20 C14 1µF DNP DNP BAT54T1G 0.8V TP20 D21 VC5X BAT TP30 TP31 TP32 DNP R27 4 Q8B FDY1002PZ 5 20V D11 10.0k 1 R28 Q9A FDY1002PZ 2 20V D12 VC10 VC9 VC8 VC7 VC6 VC5B VC5 VC4 VC3 VC2 VC1 VC0 CAP2 TS2 VC5X 4 D13 3 100 1 C2 R30 Q10A FDY1002PZ D14 100 4 D15 R21 GND C26 4700pF C27 4.7µF RT1 10.0k ohm 1 2 SCL pull up PEC02SAAN J7 NC NC 1 2 GND C21 1µF TP34 TP35 DNP GND R48 R49 10.0k 10.0k SDA pull up PEC02SAAN DNP SDA DNP ALERT R42 499k DNPC20 470pF J8 DNP C1 GND R43 3.01k 3 4 DNP S1 1 2 R44 R46 100 100 R45 R47 100 100 1 2 3 4 I2C 22-05-3041 D25 D26 5.6V 5.6V GND E3 E4 DNP TP26 C9 1µF C0 J6 CHG DSG BATT- C19 1µF 1.00k DNP REGOUT 2 1 3 10.0k 3 100 C0 395021011 TP36 TP33 TP25 1.00k R41 5.6V R19 C18 1µF R31 Q10B FDY1002PZ 5 20V CHG DSG VSS DNP 4-1437565-1 6 R18 C1 SRP SRN ALERT REGSRC 10.0k 5.6V J5 VC5X CAP1 9 8 7 6 5 4 SCL TP24 1.00k R40 2 20V RT2 10.0k ohm DNP REGSRC REGOUT CAP1 TS1 SCL SDA BQ7693000DBT TP27 C17 1µF C25 4700pF DNP 10.0k 5.6V R17 C23 1µF TP28 10 DNP TP23 1.00k R39 5 20V VC10X 14 13 GND C16 1µF R29 Q9B FDY1002PZ 15 10.0k 6 100 C3 28 29 30 TP22 1.00k R38 5.6V R16 C15 1µF DNP RT3 DNPC22 DNPC24 1µF 4700pF DNP10.0k ohm DNP 16 17 18 19 20 21 22 23 24 25 26 27 11 12 3 100 SRP SRN TP21 1.00k R37 5.6V C4 DNP BAT54T1G 0.8V DNP TP29 BAT DNP R15 C10 C9 C8 C7 C6 C5 C4 C3 C2 C1 BAT54T1G 0.8V TP19 1.00k R36 R20 C5 C10 C9 C8 C7 C6 C5 C4 C3 C2 C1 C0 DNP 100V U1 DNP DNP C8 1µF 1 2 3 4 5 6 7 8 9 10 11 D24 BAT54T1G 0.8V D19 1.00k VC5X D23 TP18 6 100 100V BAT54T1G 0.8V DNP DNP 10.0k 5.6V R14 C12 1µF R26 Q8A FDY1002PZ 2 20V D17 DNP 100V 3 R13 D22 D18 1.00k R35 5.6V C6 DNP 10.0k R25 D9 BAT54T1G 0.8V TP17 6 R12 C11 1µF 1.00k R34 5.6V C7 DNP 10.0k R24 Q7A FDY1002PZ 2 20V DNP TP16 1.00k R33 100 C8 C10 1µF R23 Q6B FDY1002PZ 5 20V 5.6V R11 D16 6 100 C9 TP15 10.0k 5.6V R10 DNP 1.00k R32 t° D6 t° Q6A FDY1002PZ 2 20V t° 1 C10 BATT- GND Figure 30. bq76930EVM Schematic Diagram AFE1 SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 45 Circuit Module Physical Construction www.ti.com 1 Q11A FDY1002PZ 2 20V 6 DNP spare BAT shunt R57 DNP 1.00k R60 DNP 100 TP37 DNP J9 DNP R52 DNP 100 R56 DNP 100 D28 Q12A FDY1002PZ 2 20V DNP DNP 5.6V R65 DNP 1.00k R70 DNP 10.0k DNPC30 1µF D29 Q12B FDY1002PZ 5 20V DNP DNP 5.6V R66 DNP 1.00k R71 DNP 10.0k DNPC31 1µF D30 Q13A FDY1002PZ 2 20V DNP DNP 5.6V R67 DNP 1.00k R72 DNP 10.0k DNPC32 1µF D31 Q13B FDY1002PZ 5 20V DNP DNP 5.6V R68 DNP 1.00k R73 DNP 10.0k 3 4 R55 DNP 100 DNPC29 1µF 6 1 R54 DNP 100 5.6V 3 4 R53 DNP 100 DNP 5 20V R64 DNP 1.00k R69 DNP 10.0k 6 1 395021005 D27 Q11B FDY1002PZ 4 C15 C14 C13 C12 C11 3 1 2 3 DNP 4 5 BAT TP50 DNPC33 1µF R63 DNP 1.00k R76 DNP 200 DNP TP40 D32 DNP DNP D40 DNP SMBJ30A-13-F BAT54T1G 0.8V Selection options, populate one only DNPC36 10µF TP41 D33 DNP DNP BAT54T1G 0.8V R77 TP42 C10 200 D34 DNP DNP BAT54T1G 0.8V TP43 D35 DNP DNP BAT54T1G 0.8V TP44 VC15 VC14 VC13 VC12 VC11 VC10B D36 DNP DNP BAT54T1G 0.8V TP45 DNPC28 1µF D37 DNP 1 2 DNP 3 BAT54T1G C15 C14 C13 C12 C11 C10 BATT+ VC10X shunt R58 1.00k R61 TP38 Selection options, populate one only if used VC10X TP48 100 R50 DNP 0 R51 DNP 0 R74 DNP 100k D38 DNP SMBJ30A-13-F VC5X shunt R59 1.00k Test points J10 TP46 C34 10µF TP47 100 VC5X TP49 REGSRC shunt TP52 100k Selection options, populate one only R62 TP39 Q14 BST82,215 100V R75 D41 R79 TP51 100V DNP REGSRC 100 R78 D39 DNP SMBJ30A-13-F C37 1µF 100k D42 DNP SMBJ30A-13-F C35 10µF C5 GND GND GND GND Figure 31. bq76930EVM Schematic Diagram AFE2 46 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Install one part only R85 DNP 0 C15 2,4 R86 C10 0 1 Alternate pattern for low voltage low current operation Q20 DNP Q21 R87 CAP1 GG_/KEYIN 1 2 /KEYIN R101 100k 0 J11 R82 R89 100 100 D45 MMSZ5246B-7-F 16V Q15 ZXMP10A13FTA -100V R94 300k 25 ppm/C GND J12 1 GG_/PRES 2 R83 R90 100 100 PEC02SAAN GND E5 E6 D43 D44 5.6V 5.6V 25 ppm/C R97 C42 0.1µF TP56 D48 R103 100k GND R110 TP59 49.9k BV 1 3 5 R95 100k DNP GG_PWR R106 196k TP53 TP54 PEC02SAAN /PRES 3 ZXTN19100CZTA 2 4 6 Green D49 L M H Q19 BSS138 50V Addr select J15 PEC03DAAN Green D50 J16 ALT 100k 25 ppm/C 1 2 3 SMBA GND R107 100k 16/17 Green D51 R109 100k R120 221k PEC03SAAN GND U2 26 BATT- 6 7 2 3 4 AFE-GG J14 1 3 5 7 9 SCL SDA REGOUT ALERT 2 4 6 8 10 GG_SCL GG_SDA GG_PWR GG_ALERT 8 9 11 13 PEC05DAAN R100 DNP 1.00Meg R104 1.00Meg 24 30 GND R91 DNP 1.00Meg 1 28 R92 DNP 1.00Meg CHG R80 DNP 1.00k DSG R81 DNP 1.00k EDSG ECHG EPCHG EPM EVEN EVAUX GND DISP VEN PRES KEYIN ADREN SMBD SMBC SAFE PRECHG PWRM MRST SMBA RBI VSS VSS VSS VSS NC NC GND GND DNP TP60 Green 14 12 29 DNP 10 TP58 5 15 DNP 27 TP57 21 22 23 25 C40 0.1µF GND J17 R114 Q18 MMBTA92 C39 3300pF R102 11.3k 25 ppm/C GND 3 4 GND Q16 BSS123 100V R93 DNP 100k 25 ppm/C S2 4-1437565-1 R115 R118 100 100 1 2 3 4 R119 100 100 R99 DNP 1.00k R96 11.3k DNPC38 3300pF 25 ppm/C TSW-107-07-G-S ALERT SDA SCL 1 2 Green D52 16 17 18 19 20 GND R98 DNP 1.00k R88 DNP 100k 25 ppm/C VAUX BAT C41 0.1µF GND R84 DNP 300k 25 ppm/C LED1 LED2 LED3 LED4 LED5 BQ78350DBT J13 7 6 5 4 DNP 3 2 1 VCC R112 10.0k D53 D54 5.6V 5.6V SMB 22-05-3041 GND E7 E8 R116 R117 1.00Meg 1.00Meg R113 DNP 1.00k BATT- D46 100V GND GND BATT- R108 10.0k TP55 R111 1.00Meg D47 MMSZ5246B-7-F 16V R105 PFD PACK- 5.6k Q17 BSS123 100V Figure 32. bq76930EVM Schematic Diagram Gauge SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 47 Circuit Module Physical Construction www.ti.com R124 DNP 200 BATT+ C15 C14 R125 DNP 200 C13 S3 R122 49.9k R123 0 R126 DNP 200 R127 DNP 200 Q22 BST82,215 100V 1 2 3 4 5 6 7 8 9 C12 18 17 16 15 14 13 12 11 10 C11 1 2 3 4 5 76SB09ST DNP R128 DNP 200 J18 Test points D56 MMSZ5235B-7-F 6.8V R129 200 R121 698 GND R130 200 C10 C9 C8 R131 200 C7 D55 Orange C6 R132 200 GND 1 2 3 4 5 R133 200 DNP R134 200 Test points J19 R135 200 R136 200 S4 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 C5 C4 C3 C2 C1 C0 76SB08ST R137 200 R138 200 1 2 3 DNP4 5 6 J20 Test points BATT- Figure 33. bq76930EVM Schematic Diagram Cell Simulator 48 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com 7.3 7.3.1 bq76940EVM Circuit Module bq76940EVM Assembly The bq76940EVM uses all 15 cells provided on the board. Figure 34 and Figure 35 show the bq76940EVM assembly. Figure 34. bq76940EVM Top Assembly SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 49 Circuit Module Physical Construction www.ti.com Figure 35. bq76940EVM Bottom Assembly 50 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com 7.3.2 bq76940EVM Bill of Materials The bill of materials for the bq76940EVM circuit module is shown in Table 5. Table 5. bq76940EVM Circuit Module Bill of Materials Designator Qty !PCB1 1 Value Description Package Reference Part Number MFR Alt. Part Number Alt. MFR PWR524 Any - C1, C2, C3, C40, C41, C42 6 0.1uF CAP, CERM, 0.1uF, 50V, +10/%, X7R, 0603 - 0603 GCM188R71H104KA57B MuRata C4, C5, C6, C7 4 0.1uF C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C21, C22, C23, C28, C29, C30, C31, C32, C33 21 1uF CAP, CERM, 0.1uF, 100V, +/-10%, X7R, 0603 0603 GRM188R72A104KA35D MuRata CAP, CERM, 1uF, 16V, +10/%, X7R, 0805 0805 GRM21BR71C105KA01L MuRata C24, C25, C26 3 C27 1 4700pF CAP, CERM, 4700pF, 50V, +/-10%, X7R, 0805 0805 08055C472KAT2A AVX 4.7uF CAP, CERM, 4.7uF, 10V, +10/%, X7R, 0805 0805 GRM21BR71A475KA73L C34, C35, C36 MuRata 3 10uF CAP, CERM, 10uF, 35V, +/-10%, X7R, 1210 1210 GRM32ER7YA106KA12L MuRata C37 1 1uF CAP, CERM, 1uF, 50V, +/-10%, X7R, 1206 1206 GRM31MR71H105KA88L MuRata C39 1 3300pF CAP, CERM, 3300pF, 25V, +/-10%, X7R, 0603 0603 GRM188R71E332KA01D MuRata D1 1 75V Diode, TVS, Uni, 75V, 1500W, SMC SMC SMCJ75A Fairchild Semiconductor D2, D22, D23, D24, D41, D46 6 100V Diode, Ultrafast, 100V, 0.15A, SOD-123 SOD-123 1N4148W-7-F Diodes Inc. D3, D45, D47 3 16V Diode, Zener, 16V, 500mW, SOD-123 SOD-123 MMSZ5246B-7-F Diodes Inc. D4 1 600V Diode, Ultrafast, 600V, 3A, SMC SMC MURS360T3G ON Semiconductor D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D25, D26, D27, D28, D29, D30, D31, D43, D44, D53, D54 21 5.6V Diode, Zener, 5.6V, 200mW, SOD-323 SOD-323 MMSZ5232BS-7-F Diodes Inc. D48, D49, D50, D51, D52 5 Green LED, Green, SMD 1.6x0.8x0.8mm LTST-C190GKT Lite-On D55 1 Orange LED, Orange, SMD 1.6x0.8x0.8mm LTST-C190KFKT Lite-On D56 1 6.8V Diode, Zener, 6.8V, 500mW, SOD-123 SOD-123 MMSZ5235B-7-F Diodes Inc. H1, H2, H3, H4 4 Bumpon, Hemisphere, 0.375 X 0.235, Black Black Bumpon SJ61A2 3M J1, J2, J3, J4 4 TERMINAL SCREW PC 30AMP, TH 12.9x6.3x7.9 mm 8199 Keystone J5 1 Header, 3.5mm, 11POS, R/A, TH 39.90x7.03x9.33 mm 395021011 Molex J6, J7, J11, J12 4 Header, 100mil, 2x1, Tin plated, TH Header, 2 PIN, 100mil, Tin PEC02SAAN Sullins Connector Solutions J8, J17 2 Header, 100mil, 4x1, R/A, TH 4x1 R/A Header 22-05-3041 Molex J9 1 Header, 3.5mm, 5POS, R/A, TH 19.03x7.03x9.33 mm 395021005 Molex J14 1 Header, 100mil, 5x2, Tin plated, TH Header, 5x2, 100mil, Tin PEC05DAAN Sullins Connector Solutions J15 1 Header, 100mil, 3x2, Tin, TH 3x2 Header PEC03DAAN Sullins Connector Solutions J16 1 Header, 100mil, 3x1, Tin plated, TH Header, 3 PIN, 100mil, Tin PEC03SAAN Sullins Connector Solutions LBL1 1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H 10,000 per roll PCB Label 0.650"H x 0.200"W THT-14-423-10 Brady - - P1 1 CONN TERM BLOCK 3.5MM 11POS R/A Term Block Plug 39500-0011 Molex Connector Corporation 1840450 Phoenix Contact P2 1 CONN TERM BLOCK 3.5MM 5POS R/A Term Block Plug 39500-0005 Molex Connector Corporation - - Printed Circuit Board SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 51 Circuit Module Physical Construction www.ti.com Table 5. bq76940EVM Circuit Module Bill of Materials (continued) Designator Qty Value Description Package Reference Part Number MFR Q2, Q4 2 100V MOSFET, N-CH, 100V, 18A, DDPAK DDPAK AOB290L AOS None Q5, Q15 2 -100V MOSFET, P-CH, -100V, -0.6A, SOT-23 SOT-23 ZXMP10A13FTA Diodes Inc. None Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13 8 20V MOSFET, P-CH, 20V, 0.83A, FDY1002PZ Fairchild Semiconductor None Q14, Q22 2 100V MOSFET, N-CH, 100V, 0.19A, SOT-23 SOT-23 BST82,215 NXP Semiconductor None Q16, Q17 2 100V MOSFET, N-CH, 100V, 0.17A, SOT-23 SOT-23 BSS123 Fairchild Semiconductor None Q18 1 0.5V Transistor, PNP, 300V, 0.2A, SOT-23 SOT-23 MMBTA92 Fairchild Semiconductor Q19 1 50V MOSFET, N-CH, 50V, 0.22A, SOT-23 SOT-23 BSS138 Fairchild Semiconductor Q20 1 0.21V Transistor, NPN, 20V, 5.25A, SOT-89 SOT-89 ZXTN19100CZTA Diodes Inc. R2, R4, R44, R45, R46, R47, R60, R61, R62, R79, R82, R83, R89, R90, R114, R115, R118, R119 18 100 RES, 100 ohm, 1%, 0.125W, 0805 0805 CRCW0805100RFKEA Vishay-Dale R3 1 0.001 RES, 0.001 ohm, 1%, 2W, 4527 4527 WSR21L000FEA Vishay-Dale R5, R8, R9, R104, R111, R116, R117 7 1.00Meg RES, 1.00Meg ohm, 1%, 0.125W, 0805 0805 CRCW08051M00FKEA Vishay-Dale R6, R87 2 0 RES, 0 ohm, 5%, 0.125W, 0805 0805 CRCW08050000Z0EA Vishay-Dale R7, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R57, R58, R59, R63, R64, R65, R66, R67, R68 22 1.00k RES, 1.00k ohm, 1%, 0.125W, 0805 0805 CRCW08051K00FKEA Vishay-Dale R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R52, R53, R54, R55, R56 15 100 RES, 100 ohm, 1%, 0.25W, 1206 1206 CRCW1206100RFKEA Vishay-Dale R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R48, R49, R69, R70, R71, R72, R73, R108, R112 19 10.0k RES, 10.0k ohm, 1%, 0.125W, 0805 0805 CRCW080510K0FKEA Vishay-Dale R42 1 499k RES, 499k ohm, 1%, 0.125W, 0805 0805 CRCW0805499KFKEA Vishay-Dale R43 1 3.01k RES, 3.01k ohm, 1%, 0.125W, 0805 0805 CRCW08053K01FKEA Vishay-Dale R75, R78, R101, R103, R107, R109 6 100k RES, 100k ohm, 1%, 0.125W, 0805 0805 CRCW0805100KFKEA Vishay-Dale R76, R124, R125, R126, R127, R128, R129, R130, R131, R132, R133, R134, R135, R136, R137, R138 16 200 RES, 200 ohm, 1%, 0.125W, 0805 0805 CRCW0805200RFKEA Vishay-Dale R85 1 0 RES, 0 ohm, 5%, 0.25W, 1206 1206 CRCW12060000Z0EA Vishay-Dale R94 1 300k RES, 300k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-304-B-T5 Susumu Co Ltd R95, R97 2 100k RES, 100k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-104-B-T5 Susumu Co Ltd R96, R102 2 7.68k RES, 7.68k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-7681-B-T5 Susumu Co Ltd R105 1 5.6k RES, 5.6k ohm, 5%, 1W, 2512 2512 ERJ-1TYJ562U Panasonic R106 1 196k RES, 196k ohm, 1%, 0.125W, 0805 0805 CRCW0805196KFKEA Vishay-Dale R110, R122 2 49.9k RES, 49.9k ohm, 1%, 0.125W, 0805 0805 CRCW080549K9FKEA Vishay-Dale R120 1 221k RES, 221k ohm, 1%, 0.125W, 0805 0805 CRCW0805221KFKEA Vishay-Dale R121 1 698 RES, 698 ohm, 1%, 0.125W, 0805 0805 CRCW0805698RFKEA Vishay-Dale RT1, RT2, RT3 3 10.0k ohm Thermistor NTC, 10.0k ohm, 1%, Disc, 5x8.4 mm Disc, 5x8.4 mm 103AT-2 SEMITEC Corporation S1, S2 2 Switch, Tactile, SPST-NO, 0.05A, 12V, SMT SW, SPST 6x6 mm 4-1437565-1 TE Connectivity S3 1 Switch, SPST 9Pos, Rocker, TH 9.65X8X24.9mm 76SB09ST Grayhill 52 bq76930 and bq76940 Evaluation Module User's Guide Alt. Part Number None Alt. MFR None None SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Table 5. bq76940EVM Circuit Module Bill of Materials (continued) Designator Qty S4 1 SH-J6, SH-J7, SH-J11, SH-J12, SH-J14-3, SH-J14-5, SH-J14-7, SH-J14-9, SH-J15-5, SH-J16-3 10 TP3, TP4, TP5, TP6 TP48, TP49, TP50 U1 Value Description Package Reference Part Number MFR Switch, SPST 8Pos, Rocker, TH 9.65X8X22.4mm 76SB08ST Grayhill 1x2 Shunt, 100mil, Gold plated, Black Shunt 969102-0000-DA 3M 4 Black Test Point, TH, Multipurpose, Black Keystone5011 5011 Keystone 3 Yellow Test Point, Multipurpose, Yellow, TH Yellow Multipurpose Testpoint 5014 Keystone 1 µC-Controlled AFE Family for 5/10/15-Series Cell LithiumIon and Phosphate Battery Pack Applications, DBT0044A DBT0044A BQ7694000DBT Texas Instruments None U2 1 CEDV Fuel Gauge and Battery Management Controller Companion to the bq769x0 AFE, DBT0030A DBT0030A BQ78350DBT-R1 Texas Instruments None W1 1 Cable assembly, 4 pin Assembly CBL002 Texas Instruments C20 0 470pF CAP, CERM, 470pF, 50V, +/-10%, X7R, 0805 0805 08055C471KAT2A AVX C38 0 3300pF CAP, CERM, 3300pF, 25V, +/-10%, X7R, 0603 0603 GRM188R71E332KA01D MuRata D5 0 600V Diode, Ultrafast, 600V, 8A, TH TO-220AC MUR860G ON Semiconductor D16, D17, D18, D19, D20, D21, D32, D33, D34, D35, D36 0 0.8V Diode, Schottky, 30V, 0.2A, SOD-123 SOD-123 BAT54T1G ON Semiconductor D37 0 Diode, Schottky, 30V, 0.2A, SOD-123 SOD-123 BAT54T1G ON Semiconductor D38, D39, D40, D42 0 Diode, TVS, Uni, 30V, 600W, SMB SMB SMBJ30A-13-F Diodes Inc. E1, E2, E3, E4, E5, E6, E7, E8 0 Spark gap. There is nothing to buy or mount. Spark gap N/A N/A FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A HS1, HS2, HS3, HS4 0 Heatsink, DDPAK/TO-263, SMT Heatsink, DDPAk 573300D00010G Aavid J10 0 Header, TH, 100mil, 3x1, Gold plated, 230 mil above insulator TSW-103-07-G-S TSW-103-07-G-S Samtec, Inc. J13 0 Header, TH, 100mil, 7x1, Gold plated, 230 mil above insulator 7x1 Header TSW-107-07-G-S Samtec J18, J19 0 Header, TH, 100mil, 5x1, Gold plated, 230 mil above insulator TSW-105-07-G-S TSW-105-07-G-S Samtec, Inc. J20 0 Header, TH, 100mil, 6x1, Gold plated, 230 mil above insulator TSW-106-07-G-S TSW-106-07-G-S Samtec, Inc. Q1, Q3 0 100V MOSFET, N-CH, 100V, 18A, DDPAK DDPAK AOB290L AOS Q21 0 0.7V Transistor, NPN, 65V, 0.1A, SOT-23 SOT-23 BC846BLT1G ON Semiconductor R1, R50, R51, R123 0 0 RES, 0 ohm, 5%, 0.125W, 0805 0805 CRCW08050000Z0EA Vishay-Dale R74 0 100k RES, 100k ohm, 1%, 0.125W, 0805 0805 CRCW0805100KFKEA Vishay-Dale R77 0 200 RES, 200 ohm, 1%, 0.125W, 0805 0805 CRCW0805200RFKEA Vishay-Dale R80, R81, R98, R99, R113 0 1.00k RES, 1.00k ohm, 1%, 0.125W, 0805 0805 CRCW08051K00FKEA Vishay-Dale R84 0 300k RES, 300k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-304-B-T5 Susumu Co Ltd R86 0 0 RES, 0 ohm, 5%, 0.25W, 1206 1206 CRCW12060000Z0EA Vishay-Dale R88, R93 0 100k RES, 100k ohm, 0.1%, 0.1W, 0603 0603 RG1608P-104-B-T5 Susumu Co Ltd R91, R92, R100 0 1.00Meg RES, 1.00Meg ohm, 1%, 0.125W, 0805 0805 CRCW08051M00FKEA Vishay-Dale TP1 0 Black Test Point, TH, Multipurpose, Black Keystone5011 5011 Keystone TP2, TP14 0 Red Test Point, TH, Multipurpose, Red Keystone5010 5010 Keystone SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Alt. Part Number Alt. MFR SNT-100-BK-G Samtec - - None None None bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 53 Circuit Module Physical Construction www.ti.com Table 5. bq76940EVM Circuit Module Bill of Materials (continued) Designator Qty Value Description Package Reference Part Number MFR TP7, TP8, TP10, TP11, TP13, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22, TP23, TP24, TP25, TP26, TP27, TP28, TP29, TP30, TP31, TP32, TP33, TP34, TP35, TP36, TP40, TP41, TP42, TP43, TP44, TP45, TP52, TP56, TP57, TP58, TP60 0 White Test Point, TH, Multipurpose, White Keystone5012 5012 Keystone Alt. Part Number Alt. MFR Notes: Unless otherwise noted in the Alternate Part Number and/or Alternate Manufacturer columns, all parts may be substituted with equivalents. 7.3.3 bq76940EVM Schematic Figure 36 through Figure 40 illustrate the bq76940EVM schematic. TP11 DSG Q5 ZXMP10A13FTA -100V DNP GND TP10 R7 1.00k R6 0 1N4148W-7-F HS1 HS3 DNP R8 1.00Meg DNP D2 100V SRP C0 DNP DNP TP7 TP9 SRN TP8 R5 1.00Meg C2 C1 R1 DNP 0 0.1µF TP3 TP4 TP5 0.1µF R2 100 R4 100 573300D00010G NT1 8199 PACK- J3 DNP Q1 AOB290L 100V GND BATT- 1 TP13 0.001 Net-Tie D1 SMCJ75A 75V Q3 AOB290L 100V DNP R3 TP1 Input 0 - 66V or 0 - 44V 15A + 573300D00010G Q2 AOB290L 100V TP6 BATT- D3 MMSZ5246B-7-F 16V DNP J1 DNP R9 1.00Meg DNP GND GND 1 DNP TP12 573300D00010G HS4 DNP C3 0.1µF GND 573300D00010G HS2 C4 C5 0.1µF 0.1µF PFD 8199 Q4 AOB290L 100V C6 0.1µF D4 DNP D5 600V MUR860G MURS360T3G 600V E2 C7 0.1µF Output 0 - 66V or 0 - 44V 15A + J4 1 BATT+ J2 1 DNP 8199 E1 BATT+ BATT+ TP2 DNP TP14 8199 Figure 36. bq76940EVM Schematic Diagram FETs 54 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com R22 4 D7 3 1 D8 4 D9 100 1 Q8A FDY1002PZ DNP C13 1µF 6 C14 1µF DNP DNP BAT54T1G 0.8V TP20 D21 VC5X 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 TP30 TP31 TP32 DNP VC15 VC14 VC13 VC12 VC11 VC10B VC10 VC9 VC8 VC7 VC6 VC5B VC5 VC4 VC3 VC2 VC1 VC0 BAT CAP3 TS3 R27 4 Q8B FDY1002PZ 5 20V D11 10.0k 3 100 1 D12 CAP2 TS2 VC5X 4 Q9B FDY1002PZ 5 20V R30 1 C2 Q10A FDY1002PZ D14 R18 100 Q10B FDY1002PZ 5 20V D15 C0 CHG DSG VSS NC NC NC NC NC NC NC DNP R21 GND DNP REGOUT 2 1 3 J6 CHG DSG C26 4700pF C27 4.7µF RT1 10.0k ohm 1 2 SCL pull up PEC02SAAN J7 23 22 21 1 2 GND C21 1µF DNP GND R48 R49 10.0k 10.0k SDA pull up PEC02SAAN DNP SDA DNP ALERT R42 499k DNPC20 470pF J8 DNP C1 GND R43 3.01k 3 4 S1 1 2 R44 R46 100 100 R45 R47 100 100 DNP D25 D26 5.6V 5.6V 1 2 3 4 I2C 22-05-3041 GND E3 E4 DNP TP26 C9 1µF C0 TP36 TP33 BATT- C19 1µF 1.00k 395021011 SRP SRN ALERT CAP1 10.0k 3 100 VC5X REGSRC TP25 1.00k R41 5.6V R19 C18 1µF R31 4 C1 TP28 10 9 8 7 6 5 4 4-1437565-1 6 J5 RT2 10.0k ohm DNP REGSRC REGOUT CAP1 TS1 SCL SDA 10.0k 5.6V C25 4700pF SCL TP24 1.00k R40 2 20V C23 1µF RT3 10.0k ohm DNP 10.0k C17 1µF C24 4700pF TP34 TP35 TP27 3 100 C22 1µF VC10X BQ7694000DBT TP23 1.00k R39 5.6V R17 DNP DNP 14 13 GND C16 1µF R29 D13 11 12 16 17 DNP TP29 15 10.0k 6 100 C3 42 43 44 TP22 1.00k R38 5.6V R16 C15 1µF R28 Q9A FDY1002PZ 2 20V SRP SRN TP21 1.00k R37 5.6V C4 DNP BAT54T1G 0.8V 20 19 18 DNP VC10X DNP R15 C10 C9 C8 C7 C6 C5 C4 C3 C2 C1 VC15 VC14 VC13 VC12 VC11 VC10B D20 R20 C5 C10 C9 C8 C7 C6 C5 C4 C3 C2 C1 C0 BAT54T1G 0.8V TP19 C8 1µF 1 2 3 4 5 6 7 8 9 10 11 BAT 100V U1 DNP DNP 10.0k 1.00k VC5X D24 BAT54T1G 0.8V D19 1.00k R36 5.6V 100 D23 TP18 R26 D10 100V BAT54T1G 0.8V DNP 10.0k 2 20V R14 C12 1µF 3 R13 C6 D17 DNP 100V 1.00k R35 5.6V D22 D18 R25 Q7B FDY1002PZ DNP 10.0k 5 20V BAT54T1G 0.8V TP17 6 100 C7 C11 1µF 1.00k R34 5.6V R12 DNP 10.0k R24 Q7A FDY1002PZ 2 20V DNP TP16 1.00k R33 100 C8 C10 1µF R23 Q6B FDY1002PZ 5 20V 5.6V R11 D16 6 100 C9 TP15 10.0k 5.6V R10 DNP 1.00k R32 t° D6 t° Q6A FDY1002PZ 2 20V t° 1 C10 BATT- GND Designed for: Public Release Mod. Date: 1/22/2014 Figure 37. bq76940EVM Schematic Diagram AFE1 SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 55 1 Circuit Module Physical Construction www.ti.com Q11A FDY1002PZ 6 2 20V spare BAT shunt R57 1.00k R60 TP37 BAT TP50 100 R76 J9 R64 4 C15 C14 C13 C12 C11 D27 Q11B FDY1002PZ 5 20V 100 10.0k 1 6 4 D29 1 Q13A FDY1002PZ 2 20V 4 D35 C32 1µF DNP DNP VC15 VC14 VC13 VC12 VC11 VC10B D36 C33 1µF R63 BAT54T1G 0.8V TP44 10.0k 3 R56 100 BAT54T1G 0.8V TP43 1.00k R73 5.6V R77 DNP 200 DNP DNP 10.0k R68 D31 Q13B FDY1002PZ 5 20V C10 D34 1.00k R72 6 100 BAT54T1G 0.8V TP42 C31 1µF R67 D30 Selection options, populate one only C36 10µF DNP DNP 10.0k 5.6V R55 C30 1µF 3 R54 D40 DNP SMBJ30A-13-F BAT54T1G 0.8V D33 1.00k R71 5.6V 100 DNP 10.0k R66 Q12B FDY1002PZ 5 20V DNP TP41 1.00k R70 5.6V R53 100 D32 C29 1µF R65 D28 Q12A FDY1002PZ 2 20V TP40 1.00k R69 5.6V R52 395021005 200 DNP 3 1 2 3 4 5 DNP DNP BAT54T1G 0.8V TP45 1.00k C28 1µF D37 DNP 1 2 DNP 3 BAT54T1G C15 C14 C13 C12 C11 C10 BATT+ VC10X shunt R58 1.00k TP46 R61 TP38 Selection options, populate one only if used VC10X TP48 100 R50 DNP 0 R51 DNP 0 R74 DNP 100k D38 DNP SMBJ30A-13-F VC5X shunt R59 1.00k Test points J10 C34 10µF TP47 R75 100k Selection options, populate one only R62 TP39 100 VC5X TP49 Q14 BST82,215 100V REGSRC shunt TP52 D41 R79 TP51 100V DNP REGSRC 100 R78 D39 DNP SMBJ30A-13-F C37 1µF 100k D42 DNP SMBJ30A-13-F C35 10µF C5 GND GND GND GND Figure 38. bq76940EVM Schematic Diagram AFE2 56 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Circuit Module Physical Construction www.ti.com Install one part only R85 C15 0 2,4 R86 DNP 0 C10 1 Alternate pattern for low voltage low current operation Q20 DNP Q21 R87 CAP1 GG_/KEYIN 1 2 /KEYIN R101 100k 0 J11 R82 R89 100 100 D45 MMSZ5246B-7-F 16V Q15 ZXMP10A13FTA -100V R94 300k 25 ppm/C GND J12 1 GG_/PRES 2 R83 R90 100 100 PEC02SAAN GND E5 E6 D43 D44 5.6V 5.6V 25 ppm/C R97 C42 0.1µF TP56 D48 R103 100k GND R110 TP59 49.9k BV 1 3 5 R95 100k DNP GG_PWR R106 196k TP53 TP54 PEC02SAAN /PRES 3 ZXTN19100CZTA 2 4 6 Green D49 L M H Q19 BSS138 50V Addr select J15 PEC03DAAN Green D50 J16 ALT 100k 25 ppm/C 1 2 3 SMBA GND R107 100k 16/17 Green D51 R109 100k R120 221k PEC03SAAN GND U2 26 BATT- 6 7 2 3 4 AFE-GG J14 1 3 5 7 9 SCL SDA REGOUT ALERT 2 4 6 8 10 GG_SCL GG_SDA GG_PWR GG_ALERT 8 9 11 13 PEC05DAAN R100 DNP 1.00Meg R104 1.00Meg 24 30 GND R91 DNP 1.00Meg 1 28 R92 DNP 1.00Meg CHG R80 DNP 1.00k DSG R81 DNP 1.00k EDSG ECHG EPCHG EPM EVEN EVAUX GND DISP VEN PRES KEYIN ADREN SMBD SMBC SAFE PRECHG PWRM MRST SMBA RBI VSS VSS VSS VSS NC NC GND GND DNP TP60 Green 14 12 29 DNP 10 TP58 5 15 DNP 27 TP57 21 22 23 25 C40 0.1µF GND J17 R114 Q18 MMBTA92 C39 3300pF R102 7.68k 25 ppm/C GND 3 4 GND Q16 BSS123 100V R93 DNP 100k 25 ppm/C S2 4-1437565-1 R115 R118 100 100 1 2 3 4 R119 100 100 R99 DNP 1.00k R96 7.68k DNPC38 3300pF 25 ppm/C TSW-107-07-G-S ALERT SDA SCL 1 2 Green D52 16 17 18 19 20 GND R98 DNP 1.00k R88 DNP 100k 25 ppm/C VAUX BAT C41 0.1µF GND R84 DNP 300k 25 ppm/C LED1 LED2 LED3 LED4 LED5 BQ78350DBT J13 7 6 5 4 DNP 3 2 1 VCC R112 10.0k D53 D54 5.6V 5.6V SMB 22-05-3041 GND E7 E8 R116 R117 1.00Meg 1.00Meg R113 DNP 1.00k BATT- D46 100V GND GND BATT- R108 10.0k TP55 R111 1.00Meg D47 MMSZ5246B-7-F 16V R105 PFD PACK- 5.6k Q17 BSS123 100V Figure 39. bq76940EVM Schematic Diagram Gauge SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback bq76930 and bq76940 Evaluation Module User's Guide Copyright © 2014–2018, Texas Instruments Incorporated 57 Circuit Module Physical Construction www.ti.com R124 200 BATT+ C15 C14 R125 200 C13 S3 R122 49.9k R123 DNP 0 R126 200 R127 200 Q22 BST82,215 100V 1 2 3 4 5 6 7 8 9 C12 18 17 16 15 14 13 12 11 10 C11 1 2 3 4 5 76SB09ST DNP R128 200 J18 Test points D56 MMSZ5235B-7-F 6.8V R129 200 R121 698 GND R130 200 C10 C9 C8 R131 200 C7 D55 Orange C6 R132 200 GND 1 2 3 4 5 R133 200 DNP R134 200 Test points J19 R135 200 R136 200 S4 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 C5 C4 C3 C2 C1 C0 76SB08ST R137 200 R138 200 1 2 3 DNP4 5 6 J20 Test points BATT- Figure 40. bq76940EVM Schematic Diagram Cell Simulator 58 bq76930 and bq76940 Evaluation Module User's Guide SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Related Documents From Texas Instruments www.ti.com 8 Related Documents From Texas Instruments Document bq76920, bq76930, bq76940 µC-Controlled AFE Family for 5/10/15-Series Cell Li-Ion and Phosphate Battery Pack Applications Data Sheet bq78350-R1 CEDV Li-Ion Gas Gauge and Battery Management Controller Companion Data Sheet bq78350-R1 Technical Reference Manual Using the bq78350-R1 Application Report TIDA-00449 Firmware Literature Number SLUSBK2 SLUSCD0 SLUUBD3 SLUA924 TIDCBB1 Revision History Changes from Original (April 2014) to A Revision .......................................................................................................... Page • • • • • • • • • Changed software title to bq76940/bq76930/bq76920 Evaluation Software in step one of the Quick Start section and globally throughout document. .......................................................................................................... 6 Changed EVM Connection for Basic Gauge Operation image. ..................................................................... 9 Changed path name to ...'\bq76940' in second paragraph of Interface Adapter section......................................... 9 Added clarification about device identifiers in menus or windows in the bq76940/bq76930/bq76920 Software section. .. 10 Added sentence about how to start the software in the Software Operation section. .......................................... 10 Changed Evaluation Software Display image. ....................................................................................... 11 Added Sequence_Example.bqseq to paragraph below Sequence View image. ................................................ 15 Changed content in the BOM in rows containing U1 and U2 in the Designator column. ...................................... 40 Changed content in the BOM in rows containing U1 and U2 in the Designator column. ...................................... 51 Revision History Changes from A Revision (April 2014) to B Revision .................................................................................................... Page • • • • • • • • • • • • • • • • • • • Changed Abstract with the following: (1) 3rd sentence to encompass bq78350 use, (2) "Li-Polymer" to "Phosphate", (3) reference in last sentence to "device" to accommodate both AFE or gauge settings. ........................................... 1 Changed 'Li-Ion and Li-Polymer' to 'Li-Ion and Phosphate' in the first Features bullet. ......................................... 4 Changed "5-cell parallel FET" to "10- or 15-cell" in first sentence of the bq769x0 Circuit Module Performance Specification Summary section. ......................................................................................................................... 4 Added 'for the AFE, 2.5 A for the gauge' to first bullet in Required Equipment section. ......................................... 4 Deleted bullet containing 'TI bq76940/bq76930/bq76920 Evaluation Software' in Required Equipment section. ............ 5 Added 'calibrated load or load with accurate current meter required for gauge evaluation' to sixth bullet in Required Equipment section. ........................................................................................................................ 5 Added Quick Start section with introduction and moved AFE Quick Start to Quick Start subsection. ......................... 6 Changed step 1 in AFE Quick Start section, moved install instruction from step 1 to step 2. .................................. 6 Added AFE to EVM Connection for Basic AFE Operation figure caption. ......................................................... 7 Added Gauge Quick Start section. ...................................................................................................... 7 Changed Interface Adapter section to a main heading and changed content of section. ....................................... 9 Changed bq76940/bq76930/bq76920 Software section to a new heading number and added clarification in first paragraph. .................................................................................................................................. 9 Added Interface Adapter section with bq769x0-specific instructions. ............................................................. 10 Added Battery Management Studio Software section............................................................................... 16 Added sentence to end of Evaluating with Simulated Current section............................................................ 26 Added paragraph to end of Reducing the Cell Count section...................................................................... 27 Changed first sentence of Connecting to a Host section. .......................................................................... 29 Changed entire content of Gauge Circuits section. ................................................................................. 30 Added 3 paragraphs at the end of Unused Components section to describe unused gauge components. ................. 31 SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated Revision History 59 Revision History • www.ti.com Added documents to the Related Documents section. ............................................................................. 59 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from B Revision (July 2014) to C Revision ..................................................................................................... Page • • • • • • • • • • • • • • • • • • • • • • 60 Added information about what the illuminated LED indicates on step 8 in the AFE Quick Start section. ..................... 6 Changed adapter and text in figure. .................................................................................................... 7 Changed interface adapter and programming steps in the Gauge Quick Start section. ......................................... 7 Added sub-steps to step 12 in Gauge Quick Start section........................................................................... 7 Changed adapter in figure. ............................................................................................................... 9 Changed Interface Adapter section to emphasize EV2400 and firmware update. ............................................... 9 Changed content in the bq76940/bq76930/bq76920 Software section. ........................................................... 9 Changed the software link to the bqStudio tool folder. ............................................................................. 16 Changed bqStudio Operation to describe start with firmware installed first. ..................................................... 16 Changed Firmware Programming to comprehend gauge with firmware, EV2400 version, and firmware programming time. ....................................................................................................................................... 18 Changed firmware shown in figure. ................................................................................................... 19 Changed firmware shown in figure. ................................................................................................... 19 Changed firmware shown in figure. ................................................................................................... 20 Changed link and references to version -R1. ........................................................................................ 24 Changed last sentence in the Cell Simulator section. .............................................................................. 24 Changed adapter in figure. ............................................................................................................. 26 Added reference and figure to Reducing the Cell Count section. ................................................................. 26 Added paragraph and figure to Connecting Cells section. ......................................................................... 27 Changed I section paragraph and added figure. .................................................................................... 29 Added spark gap paragraph. ........................................................................................................... 31 Changed bq78350 version in the BOM table. ........................................................................................ 51 Changed gauge documents to -R1 and added references in related documents. .............................................. 59 Revision History SLVU925C – April 2014 – Revised December 2018 Submit Documentation Feedback Copyright © 2014–2018, Texas Instruments Incorporated IMPORTANT NOTICE AND DISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI’s products are provided subject to TI’s Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2018, Texas Instruments Incorporated