BQ20Z95EVM-001

User's Guide SLUU275A – October 2006 – Revised October 2013 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module This evaluation module (EVM) is a complete evaluation system for the bq20z95/bq29412 battery management system. The EVM includes one bq20z95/bq29412 circuit module, and Windows®-based PC software. An EV2300 PC interface board for gas gauge interface is required to interface this EVM with the PC and can be purchased separately. The circuit module includes one bq20z95 integrated circuit (IC), one bq29412 IC, and all other onboard components necessary to monitor and predict capacity, perform cell balancing, monitor critical parameters, protect the cells from overcharge, over-discharge, short-circuit, and overcurrent in 2-, 3- or 4-series cell Li-ion or Li-polymer battery packs. The circuit module connects directly across the cells in a battery. With the EV2300 interface board and software, the user can read the bq20z95 data registers, program the chipset for different pack configurations, log cycling data for further evaluation, and evaluate the overall functionality of the bq20z95/bq29412 solution under different charge and discharge. 1 2 3 4 5 6 7 8 9 10 11 12 Contents Features ...................................................................................................................... 2 bq20z95-Based Circuit Module ........................................................................................... 2 bq20z95 Circuit Module Schematic ....................................................................................... 3 Circuit Module Physical Layouts and Bill of Materials .................................................................. 4 EVM Hardware and Software Setup ..................................................................................... 8 Troubleshooting Unexpected Dialog Boxes ............................................................................. 8 Hardware Connection ...................................................................................................... 9 Operation ................................................................................................................... 10 Calibration Screen ......................................................................................................... 12 Pro (Advanced) Screen ................................................................................................... 14 Pack Assembly and The bq20z95 ....................................................................................... 15 Related Documentation from Texas Instruments ..................................................................... 16 List of Figures 1 bq20z95EVM-001 Layout (Silk Screen) .................................................................................. 4 2 Top Assembly ............................................................................................................... 4 3 Top Layer .................................................................................................................... 5 4 Bottom Layer ................................................................................................................ Bottom Assembly ........................................................................................................... Schematic .................................................................................................................... bq20z95 Circuit Module Connection to Cells and System Load/Charger ........................................... SBS Data Screen .......................................................................................................... Data Flash Screen, 1st Level Safety Class ............................................................................ Calibration Screen ......................................................................................................... Pro (Advanced) Screen ................................................................................................... Connection Sequence .................................................................................................... Fuel Gauging Command ................................................................................................. 5 5 6 7 8 9 10 11 12 13 5 7 9 10 11 13 14 15 15 List of Tables Impedance Track is a trademark of Texas Instruments. Windows is a registered trademark of Microsoft Corporation. SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 1 Features 1 1 Ordering Information ........................................................................................................ 2 2 Components and Flash-Memory Settings for Different Precharge Modes .......................................... 4 3 Bill of Materials .............................................................................................................. 6 4 Performance Specification Summary..................................................................................... 8 5 Circuit Module to EV2300 Connections .................................................................................. 9 Features • • • • 1.1 Complete evaluation system for the bq20z95 SBS 1.1-compliant advanced gas gauge with Impedance Track™ technology and bq29412 independent overvoltage protection IC Populated circuit module for quick setup PC software and interface board for easy evaluation Software that allows data logging for system analysis Kit Contents • • • 1.2 www.ti.com bq20z95/bq29412 circuit module Software CD with the evaluation software Set of support documentation Ordering Information Table 1. Ordering Information 2 EVM PART NUMBER CHEMISTRY CONFIGURATION CAPACITY bq20z95EVM-001 Li-ion 2, 3, or 4 cell Any bq20z95-Based Circuit Module The bq20z95/bq29412-based circuit module is a complete and compact example solution of a bq20z95 circuit for battery management and protection of Li-ion or Li-polymer packs. The circuit module incorporates a bq20z95 battery monitor IC, bq29412 independent overvoltage protection IC, and all other components necessary to accurately predict the capacity of 2-, 3-, or 4-series cells. 2.1 Circuit Module Connections Contacts on the circuit module provide the following connections: • Direct connection to the cells: 1N (BAT-), 1P, 2P, 3P, 4P (BAT+) • To the serial communications port (SMBC, SMBD) • The system load and charger connect across PACK+ and PACK• To the system-present pin (SYS PRES) 2 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated bq20z95 Circuit Module Schematic www.ti.com 2.2 Pin Descriptions PIN NAME DESCRIPTION 1N -ve connection of first (bottom) cell 1P +ve connection of first (bottom) cell 2P +ve connection of second cell 3P +ve connection of third cell 4P +ve connection of fourth (top) cell SMBC Serial communication port clock SMBD Serial communication data port SYS PRES 3 System present pin (if low, system is present) PACK- Pack negative terminal VSS Pack negative terminal PACK+ Pack positive terminal bq20z95 Circuit Module Schematic This section contains information for modifying and choosing a precharge mode for bq20z95/bq29412 implementation. 3.1 Schematic The schematic follows the bill of materials in this user's guide. 3.2 Modifications for Choosing Particular Precharge Mode In order to charge, the charge FET (CHG-FET) must be turned on to create a current path. When the V(BAT) is 0 V and CHG-FET = ON, the V(PACK) is as low as the battery voltage. In this case, the supply voltage for the device is too low to operate. This function has three possible configurations, and the IC can be easily configured according to the application needs. The three modes are 0-V Charge FET mode, Common FET mode, and Precharge FET mode. 1. 0-V Charge FET mode - Dedicates a precharge current path using an additional FET (ZVCHG-FET) to sustain the PACK+ voltage level. 2. Common FET mode - Does not use a dedicated precharge FET. The charge FET (CHG-FET) is set to ON state as default. 3. Precharge FET mode - Dedicates a precharge current path using an additional open-drain (OD) pin drive FET (PCHG-FET) to sustain the PACK+ voltage level. To use a particular mode of charging with the EVM, add or remove some elements shown in Table 2, and use the given settings of DF.Configuration, ZVCHG1, 0. SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 3 Circuit Module Physical Layouts and Bill of Materials www.ti.com Table 2. Components and Flash-Memory Settings for Different Precharge Modes MODE RESISTORS PRECHG FET ZVCHG1 ZVCHG0 1. 0-V Chg (default) R21, R28 Q3 0 0 R24 Q2 0 1 R23, R28 Q3 1 0 2. Common FET 3. Precharge For more details about precharge operation and mode choices, see the bq20z95 data sheet at (SLUS757). 3.3 Testing Fuse-Blowing Circuit To prevent the loss of board functionality during the fuse-blowing test, the actual chemical fuse is not provided in the circuit. FET Q4 drives TP3 low if a fuse-blow condition occurs; so, monitoring TP3 can be used to test this condition. Fuse placement on the application board is shown in the bq20z95 data sheet reference-board schematic. 4 Circuit Module Physical Layouts and Bill of Materials This section contains the board layout, bill of materials, and assembly drawings for the bq20z95/bq29412 circuit module. 4.1 Board Layout This section shows the dimensions, PCB layers (Figure 1 through Figure 5), and assembly drawing for the bq20z95 module. Figure 1. bq20z95EVM-001 Layout (Silk Screen) Figure 2. Top Assembly 4 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 3. Top Layer Figure 4. Bottom Layer Figure 5. Bottom Assembly SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 5 Circuit Module Physical Layouts and Bill of Materials 4.2 www.ti.com Bill of Materials and Schematic Table 3. Bill of Materials 6 Count RefDes Description Size Mfr Part Number 21 C1–C9, C12, C13, C15–C18, C20, C23, C24, C26–C28 Capacitor, Ceramic, 0.1μF, 50 V, X7R, 20% 0603 Any STD 1 C11 Capacitor, Ceramic, 0.22μF, 50 V, X7R, 20% 0603 Any STD 1 C19 Capacitor, Ceramic, 4.7μF, 10 V, X7R, 20% 0603 Any STD 2 C22, C25 Capacitor, Ceramic, 0.47μF, 16 V, X7R, 20% 0603 Any STD 3 C10, C14, C21 Capacitor, Ceramic, 1.0μF, 25 V, X7R, 20% 0805 Any STD 4 D1–D3, D11 Diode, Switching, 150-mA, 75-V, 350mW SOT23 Vishay-Liteon BAS16 2 D4, D5 Diode, Dual, Zener, 5.6V, 300mW SOT23 VishayTelefunken AZ23C5V6 5 D6–D10 Diode, LED, Green, Gullwing, GW Type, 20ma, 7.5 mcd typ. 0.120 × 0.087 inches Panasonic LN1361C 1 J1 Header, Friction Lock Ass'y, 4-pin Right Angle, 0.400 × 0.500 Molex 22-05-3041 1 Q1 MOSFET, N-ch, 20-V, 1.3A, 0.16-Ω SOT23 Fairchild NDS331N 2 Q2, Q4 MOSFET, N-ch Logic Level, Power Trench, 30V, 11A, 12.5 mΩ SO8 Fairchild FDS6690A 1 Q3 MOSFET, P-ch, 30-V, 8.0-A, 20-mΩ SO8 Siliconix Si4435DY 1 Q6 MOSFET, Nch, 50V, 0.22A, 6 Ω SOT23 Fairchild BSS138 12 R1–R5, R12, R13, R32–R34, R38, R39 Resistor, Chip, 100-Ω, 1/16-W, 5% 0603 Std Std 1 R11 Resistor, Chip, 0.010 Ω, 1-W, xx% 2512 Vishay WSL-2512-010 1% R86 3 R15, R16, R40 Resistor, Chip, 220 kΩ, 1/16-W, 5% 0603 Std Std 1 R17 Resistor, Chip, 300-Ω, 1-W, 10% 2512 2 R18, R27 Resistor, Chip, 3.01MΩ, 1/16-W, 5% 0603 Std Std 5 R14, R19, R21–R23 Resistor, Chip, 5.1kΩ, 1/16-W, 5% 0603 Std Std 4 R20, R36, R37, R41 Resistor, Chip, 1MΩ, 1/16-W, 5% 0603 Std Std 2 R24, R28 Resistor, Chip, 100kΩ, 1/16-W, 5% 0603 Std Std 2 R25, R29 Resistor, Chip, 8.45kΩ, 1/16-W, 1% 0603 Std Std 2 R26, R30 Resistor, Chip, 61.9kΩ, 1/16-W, 1% 0603 Std Std 7 R6–R10, R31, R35 Resistor, Chip, 1kΩ, 1/16-W, 5% 0603 Std Std 2 RT1, RT2 Thermistor, 10kΩ 0.095 × 0.150 Semitec NTC103AT 1 SW1 Switch, Push button, Momentary, N.O. Low Profile 5 mm × 5 mm Panasonic EVQPLCxxxx 2 TB1, TB4 Terminal Block, 2-pin, 6-A, 3,5mm 0.27 × 0.25 OST ED1514 2 TB2, TB3 Terminal Block, 3-pin, 6-A, 3,5mm 0.41 × 0.25 OST ED1515 1 TP1 Test Point, Black, Thru Hole Color Keyed 0.100 × 0.100 inch Keystone 5001 1 TP3 Test Point, White, Thru Hole Color Keyed 0.100 × 0.100 inch Keystone 5002 1 U1 IC, Voltage Protection for 2, 3, 4 Cell Lion , 2nd Protection, 4.45 V OVP SSOP-08 TI BQ29412DCT 1 U2 IC, Cool-GG Programmable Battery Management TSSOP30 TI bq20z95DBT bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module WSL-2512-300 1% R86 SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 6. Schematic SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 7 EVM Hardware and Software Setup 4.3 www.ti.com bq20z95/bq29412 Circuit Module Performance Specification Summary This section summarizes the performance specifications of the bq20z95/bq29412 circuit module. Table 4. Performance Specification Summary Specification 5 Minimum Typical Maximum Units Input voltage Pack+ to Pack– 6 15 25 V Charge and discharge current 0 2 7 A EVM Hardware and Software Setup This section describes how to install the bq20z95EVM-001 PC software, and how to connect the different components of the EVM. 5.1 System Requirements The bq20z95EVSW software requires Windows 2000 or Windows XP. Drivers for Windows 98SE are provided, but Microsoft no longer supports Windows 98; and there may be issues in Windows 98 with USB driver support. The EV2300 USB drivers have been tested for Windows 98SE, but no assurance is made for problem-free operation with specific system configurations. 5.2 Software Installation Find the latest software version in the bq20z95 tool folder on power.ti.com. Use the following steps to install the bq20z95EVSW software: 1. Copy the files from the CD into the temporary directory you selected, open the archive TI USB DRVRS.zip, and extract its contents in a subdirectory/drivers. Choose preserve directory structure option when extracting. Alternatively, run setup.exe from the same directory. 2. Plug the EV2300 into a USB port. 3. Wait until system prompt new hardware found appears. Choose select location manually, and use the browse button to point to subdirectory TIUSBWin2K-XP-1. 4. Answer continue to the warning that drivers are not certified with Microsoft. 5. After installation finishes, another system prompt new hardware found appears. Repeat procedure above, but point to subdirectory TIUSBWin2K-XP-2 6. Answer continue to the warning that drivers are not certified with Microsoft. Installation of drivers is now finished. 7. For Windows 98, point to directory TIUSBWin98. 8. Return to the temporary directory where you extracted files; double-click on the setup.exe icon to install EV Software. If files were downloaded from the Web: 1. Open the archive containing the installation package, and copy its contents in a temporary directory. 2. Follow the preceding steps 1–8. 6 Troubleshooting Unexpected Dialog Boxes Ensure that the files were extracted from the zip file using the Preserve Folder names option. Ensure that all the files were extracted from the zip file. The user that is downloading the files must be logged in as the administrator. The driver is not signed, so the administrator must allow installation of unsigned drivers in the operating system policy. 8 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Hardware Connection www.ti.com 7 Hardware Connection The bq20z95EVM-001 comprises three hardware components: the bq20z95/bq29412 circuit module, the EV2300 PC interface board (purchased separately), and the PC. 7.1 Connecting bq20z95/bq29412 Circuit Module to Battery Pack Figure 7 shows how to connect the bq20z95/bq29412 circuit module to the cells and system load/charger. The cells should be connected in the following order: 1. 4-Cell Pack: 1N (BAT–), 1P, 2P, 3P, and 4P (see Section 2.1 for definitions). 2. 3-Cell Pack: 1N (BAT–), 1P, 2P, and then connect 4P and 3P together. 3. 2-Cell Pack: 1N (BAT–), 1P, and then connect 4P, 3P, and 2P together To start charge or discharge test, connect PRES pin to PACK- pin to set SYS PRES state. To test sleep mode, disconnect the PRES pin. Figure 7. bq20z95 Circuit Module Connection to Cells and System Load/Charger 7.2 PC Interface Connection The following steps configure the hardware for interface to the PC: 1. Connect the bq20z95-based smart battery to the EV2300 using wire leads as shown in Table 5. Table 5. Circuit Module to EV2300 Connections bq20z95-Based Battery EV2300 SMBD SMBD SMBC SMBC VSS GND 2. Connect the PC USB cable to the EV2300 and the PC USB port. The bq20z95EVM-001 is now set up for operation. SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 9 Operation 8 www.ti.com Operation This section details the operation of the bq20z95 EVSW software. 8.1 Starting the Program Run bq Evaluation Software from the Start | Programs | Texas Instruments | bq20z95 EVSW menu sequence. The SBS Data screen (Figure 8) appears. Data begins to appear once the (single time scan) button is clicked, or when the check box is checked. To disable the scan feature, deselect . The continuous scanning period can be set via the | Options | and | Set Scan Interval | menu selections. The range for this interval is 0 ms to 65535 ms. Only items that are selected for scanning are scanned within this period. The bq Evaluation Software provides a logging function which logs the values that were last scanned by EVSW. To enable this function, select the Start Logging button, this causes the Keep Scanning button to be selected. When logging is Stopped, the keep scanning button is still selected and has to be manually unchecked. The logging intervals are specified under the | Options | menu with the maximum value of 65535 ms. The Log interval cannot be smaller than scan interval because this results in the same value being logged at least twice. Figure 8. SBS Data Screen 10 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Operation www.ti.com This screen (Figure 8) shows the SBS data set along with additional ManufacturersAccess() command information such as individual cell measurements. Additional Flag and Static data can be viewed by selecting the appropriate tab at the bottom of the SBS screen. Data such as SBS.ManufacturerName( ) is static and does not change. This data is viewed separately using the Static Data tab available at the bottom of the screen. Dragging the splitter bar (line that separates the Flags/Static data from SBS values) changes the height of the Flags/Static Data display. Selecting | View |, then | Auto Arrange | returns the splitter bar to its original location. 8.2 Setting Programmable bq20z95 Options The bq20z95 data flash comes configured per the default settings detailed in the bq20z95 data sheet. Ensure that the settings are correctly changed to match the pack and application for the bq20z95 solution being evaluated. IMPORTANT: The correct setting of these options is essential to get the best performance. The settings can be configured using the Data Flash screen (Figure 9). Figure 9. Data Flash Screen, 1st Level Safety Class To read all the data from the bq20z95 data flash, click on menu option | Data Flash | Read All |. To write to a data flash location, click on the desired location, enter the data and press , which writes the entire tab of flash data, or select menu option | Data Flash | Write All |. The data flash must be read before any writes are performed to avoid any incorrect data being written to the device. The | File | Special Export | menu options allows the data flash to be exported, but it configures the exported data flash to a learned state ready for mass production use. SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 11 Calibration Screen www.ti.com The data flash configuration can be saved to a file by selecting | File | Export | and entering a file name. A data flash file also can be retrieved in this way, imported, and written to the bq20z95 using the | Write All | button. The configuration information of the bq29z95 and module calibration data also is held in the bq20z95 data flash. The bq20z95 allows for an automatic data flash export function, similar to the SBS Data logging function. This feature, when selected via | Options | Auto Export |, exports Data Flash to a sequential series of files named as FilenameNNNNN.gg where N = a decimal number from 0 to 9. The AutoExport interval is set under the | Options menu | with a minimum value of 15 s. The AutoExport filename also is set under the | Options menu |. When a check mark is next to | AutoExport |, the AutoExport is in progress. The same menu selection is used to turn on / off AutoExport. If the data flash screen is blank, then the bq20z95 that is being used may not be supported by the bqEVSW version that is being used. An upgrade may be required. 9 Calibration Screen 9.1 How to Calibrate Before the bq20z95 is calibrated: • Connect a load to Pack- and Pack+ that draws approximately 2 A and measures discharge current to use the FETs. • Connect a current source to Batt- and Pack- to calibrate without using the FETs. • Measure the pack voltage from Batt+ to Batt- (Total of Cell voltages). • Measure the temperature of the pack. • These steps may not be required, depending on the type of calibration being performed. Note that voltage calibration with cells attached requires special consideration. Cells must be in a resting state. For additional information, go to the TI Web site (www.ti.com) and access the TI Knowledge Base and search for bq20zxx Calibration Using EV Software. 9.2 To Calibrate the bq20z95 Select the types of calibration to be performed (see Figure 10). Enter the measured values for the types selected. If Voltage Calibration is selected, then enter the number of cells on the pack. If Temperature Calibration is selected, then select the sensor that is to be calibrated. If the load is connected between Pack+ and Pack-, then select the Use FETs check box. Press the Calibrate Part button. 9.3 Board Offset Calibration This performs the offset calibration for the current offset of the board. Remove load/external voltage and short Pack- to Batt-. Press the CC Board Offset Calibration button. 9.4 Pack Voltage Calibration This calibrates the voltage at the AFE Pack pin. Make sure Voltage Calibration has been performed for the pack. If Voltage Calibration is not performed, then Pack Voltage Calibration calibrates incorrectly. 12 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Calibration Screen www.ti.com Remove load/external voltage applied between Pack+ and Pack-. Press the Pack Voltage button to calibrate. Figure 10. Calibration Screen SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 13 Pro (Advanced) Screen 10 www.ti.com Pro (Advanced) Screen 10.1 SMB Communication The set of read/write operations over SMBus are not specific to any gas gauge. These are provided as general-purpose communication tools (Figure 11). 10.2 Hexadecimal/Decimal Converter These two boxes convert between hexadecimal and decimal as soon as values are typed into the boxes. Invalid values may cause erroneous results. When scaling converted hexadecimal values to a higher number of bytes, follow these rules: • When unsigned is selected, the left pad contains zeroes. • When signed is selected, the left pad contains zeroes for a positive number, or the left pad contains F for negative numbers. 10.3 Programming This screen allows device reprogramming from unencrypted and encrypted files. Figure 11. Pro (Advanced) Screen 14 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Pack Assembly and The bq20z95 www.ti.com 11 Pack Assembly and The bq20z95 This section describes a recommended assembly sequence for a bq20z95-based battery pack. This procedure results in the most time-efficient setup of the battery pack. Following are the steps for connecting a 4-series cell battery to the bq20z95EVM board. Review the application report bq20zxx EVM Data Flash Settings for Number of Serial Cells and Pack Capacity, SLVA208, for further details on 2- and 3-series cell arrangements. 3P 4P + - 2P + CELL 4 - CELL 3 1P + - CELL 2 1N + - CELL 1 EVM Connector Battery Stack Figure 12. Connection Sequence 1. Connect the most negative terminal (– terminal of cell 1) of the serially-connected, 4-cell battery stack to the 1N PIN of the TB3–TB2 connector as shown in Figure 12. 2. Connect the positive terminal of cell 1 to 1P. 3. Connect the positive terminal of cell 2 to 2P. 4. Connect the positive terminal of cell 3 to 3P. 5. Connect the positive terminal of the battery stack (+) to 4P. 6. Connect external power (from 6 to 16.8V) to the Pack+ and Pack– terminals to wake up the EVM from shutdown mode. External power does not need to remain connected once the bq20zxx has exited Shutdown Mode. 7. Connect the SMBus connector (J1) to the EV2300 adapter and start the EV software. 8. Navigate to the Flash Screen. Change the flash constants that correspond to the specific parameters of your application (refer to the data sheet or other application reports). For the first evaluation, the default values may be used. 9. Navigate to the Calibration screen. Select the check-box for CC Offset Calibration. Click the calibrate part button. It should show OK. 10. Uncheck previously-selected boxes. Select the check-box for voltage near Measured voltage field. Measure the actual pack voltage between pins 1N and 4P, and enter the value into the Enter actual voltage field. Click the calibrate part button. 11. To start fuel-gauging, navigate to the Pro screen in the EV software. Make sure that the Write SMB Word section reads: "SMB Command: 00 Word (hex): 0021" as shown in Figure 13, and click the Write button. Figure 13. Fuel Gauging Command 12. Navigate to the SMB Screen and be sure that the QEN bit in Operation Status is set (red). The Relative State of Charge value is now updated to the correct value that corresponding to the state of charge of the attached cells. 13. Now the pack is ready. Simulate insertion into a system by shorting between the Sys Pres (System Present) and the VSS pins on the connector. At this point, the discharge and charge FETs are ON (as indicated by value of 0006 in the FET Status field in the SMB Screen of the EV software), and charge/discharge tests can be conducted. This step in not needed if the NR bit (nonremovable pack) is enabled in Operation Cfg B register. SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Copyright © 2006–2013, Texas Instruments Incorporated 15 Related Documentation from Texas Instruments 12 www.ti.com Related Documentation from Texas Instruments To obtain a copy of any of the following TI document, call the Texas Instruments Literature Response Center at (800) 477-8924 or the Product Information Center (PIC) at (972) 644-5580. When ordering, identify this document by its title and literature number. Updated documents can also be obtained through the TI Web site at www.ti.com Document: Literature Number: bq20z95, SBS-Compliant Gas Gauge Enabled With Impedance SLUS757 Track™ data sheet bq20z90-110 + bq29330 Chipset technical reference manual SLUU264 bq20z70 and bq20z90 application book SLUA404 Quick-Start Guide for bq20zxx Family Gas Gauge application SLUA421 report bqEasy user's guide SLUU278 16 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module SLUU275A – October 2006 – Revised October 2013 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. Please read the User's Guide and, specifically, the Warnings and Restrictions notice in the User's Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or contact TI. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used. TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. REGULATORY COMPLIANCE INFORMATION As noted in the EVM User’s Guide and/or EVM itself, this EVM and/or accompanying hardware may or may not be subject to the Federal Communications Commission (FCC) and Industry Canada (IC) rules. For EVMs not subject to the above rules, this evaluation board/kit/module is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer use. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES-003 rules, which are designed to provide reasonable protection against radio frequency interference. Operation of the equipment may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. General Statement for EVMs including a radio User Power/Frequency Use Obligations: This radio is intended for development/professional use only in legally allocated frequency and power limits. Any use of radio frequencies and/or power availability of this EVM and its development application(s) must comply with local laws governing radio spectrum allocation and power limits for this evaluation module. It is the user’s sole responsibility to only operate this radio in legally acceptable frequency space and within legally mandated power limitations. Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization. For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant Caution This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Interference Statement for Class A EVM devices This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. For EVMs annotated as IC – INDUSTRY CANADA Compliant This Class A or B digital apparatus complies with Canadian ICES-003. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Concerning EVMs including radio transmitters This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Concerning EVMs including detachable antennas Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada. Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de l'utilisateur pour actionner l'équipement. Concernant les EVMs avec appareils radio Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur. SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER 【Important Notice for Users of EVMs for RF Products in Japan】 】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for Enforcement of Radio Law of Japan, Use this product only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product, or Use of this product only after you obtained the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to this product. Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 本開発キットは技術基準適合証明を受けておりません。 本製品のご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。 1. 2. 3. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用いただく。 実験局の免許を取得後ご使用いただく。 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 　　　上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・インスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル http://www.tij.co.jp SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use. It is intended solely for use for preliminary feasibility evaluation in laboratory/development environments by technically qualified electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems and subsystems. It should not be used as all or part of a finished end product. Your Sole Responsibility and Risk. You acknowledge, represent and agree that: 1. 2. 3. 4. You have unique knowledge concerning Federal, State and local regulatory requirements (including but not limited to Food and Drug Administration regulations, if applicable) which relate to your products and which relate to your use (and/or that of your employees, affiliates, contractors or designees) of the EVM for evaluation, testing and other purposes. You have full and exclusive responsibility to assure the safety and compliance of your products with all such laws and other applicable regulatory requirements, and also to assure the safety of any activities to be conducted by you and/or your employees, affiliates, contractors or designees, using the EVM. Further, you are responsible to assure that any interfaces (electronic and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard. Since the EVM is not a completed product, it may not meet all applicable regulatory and safety compliance standards (such as UL, CSA, VDE, CE, RoHS and WEEE) which may normally be associated with similar items. You assume full responsibility to determine and/or assure compliance with any such standards and related certifications as may be applicable. You will employ reasonable safeguards to ensure that your use of the EVM will not result in any property damage, injury or death, even if the EVM should fail to perform as described or expected. You will take care of proper disposal and recycling of the EVM’s electronic components and packing materials. Certain Instructions. It is important to operate this EVM within TI’s recommended specifications and environmental considerations per the user guidelines. Exceeding the specified EVM ratings (including but not limited to input and output voltage, current, power, and environmental ranges) may cause property damage, personal injury or death. If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and intended loads. Any loads applied outside of the specified output range may result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, some circuit components may have case temperatures greater than 60°C as long as the input and output are maintained at a normal ambient operating temperature. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors which can be identified using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during normal operation, please be aware that these devices may be very warm to the touch. As with all electronic evaluation tools, only qualified personnel knowledgeable in electronic measurement and diagnostics normally found in development environments should use these EVMs. Agreement to Defend, Indemnify and Hold Harmless. You agree to defend, indemnify and hold TI, its licensors and their representatives harmless from and against any and all claims, damages, losses, expenses, costs and liabilities (collectively, "Claims") arising out of or in connection with any use of the EVM that is not in accordance with the terms of the agreement. This obligation shall apply whether Claims arise under law of tort or contract or any other legal theory, and even if the EVM fails to perform as described or expected. Safety-Critical or Life-Critical Applications. If you intend to evaluate the components for possible use in safety critical applications (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, such as devices which are classified as FDA Class III or similar classification, then you must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2013, Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 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