TPS62350EVM-201

User's Guide SLVU177A – July 2006 – Revised January 2018 TPS62350EVM-201 Evaluation Module This user’s guide describes the characteristics, operation, and use of the TPS62350EVM-201 evaluation module (EVM). This EVM demonstrates the Texas Instruments TPS62350 800-mA, 3-MHz, synchronous, step-down converter with I2C interface. This document includes setup instructions, a schematic diagram, a bill of materials, and PCB layout drawings for the evaluation module. 1 2 3 4 5 6 Contents Introduction ................................................................................................................... 2 Setup .......................................................................................................................... 2 Operation ..................................................................................................................... 5 Test Results .................................................................................................................. 7 Board Layout ................................................................................................................. 9 Schematic and Bill of Materials ........................................................................................... 12 List of Figures 1 Output Controls Tab ....................................................................................................... 5 2 Preferences Tab ............................................................................................................ 6 3 Start-up From Enable ....................................................................................................... 7 4 Output Ripple ................................................................................................................. 7 5 Load Transient, 1-mA to 180-mA Step 12 ................................................................................... 8 Load Transient, 210-mA to 1-mA Step ................................................................................... 8 Assembly Layer .............................................................................................................. 9 Top Layer Routing ......................................................................................................... 10 Bottom Layer Routing ..................................................................................................... 10 Layer 2 Routing............................................................................................................. 11 Layer 3 Routing............................................................................................................. 11 TPS62350EVM-201 Schematic .......................................................................................... 12 1 HPA201A Bill of Materials ................................................................................................. 13 6 7 8 9 10 11 List of Tables Trademarks Microsoft, Windows are registered trademarks of Microsoft Corporation. VeriSign is a trademark of VeriSign, Inc.. All other trademarks are the property of their respective owners. SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback TPS62350EVM-201 Evaluation Module Copyright © 2006–2018, Texas Instruments Incorporated 1 Introduction 1 Introduction 1.1 Requirements www.ti.com To operate this EVM properly, connect and properly configure the following components: A personal computer (PC) with a USB port is required to operate this EVM. The TPS62350 interface software runs on the PC and communicates with the EVM via the PC’s USB port. Commands can be sent to the internal registers of the TPS62350 through the USB port. Personal Computer Requirements • Microsoft® Windows® 2000 or Windows XP operating system • USB port • Minimum of 30 MB of free hard disk space (100 MB recommended) • Minimum of 256 MB of RAM Printed-Circuit Board Assembly The TPS62350EVM-201 PCB contains the TPS62350 IC and its required external components. This board contains several jumpers and connectors that enable the user to customize the board for specific operating conditions. USB Interface Adapter The USB interface adapter is the link that allows the PC and the EVM to communicate. One end of the USB interface adapter connects to the PC with the supplied USB cable; the other side of the USB interface adapter connects to the EVM with the supplied ribbon cable. When a command is written to the EVM, the interface program running on the PC sends the commands to the PC USB port. The USB interface adapter receives the USB command, converts the signal to an I2C protocol, and sends the I2C signal to the TPS62350 EVM board Software Texas Instruments provides software to assist in evaluating this EVM. The software can be installed from the supplied CD or downloaded from the Texas Instruments Web site at www.ti.com. 2 Setup This section describes the jumpers and connectors on the EVM as well as how to properly connect, set up, and use the TPS62350EVM-201. 2.1 2.1.1 Input/Output Connector Descriptions J1 – VIN This is the positive input supply voltage to the converter. The leads to the input supply should be twisted and kept as short as possible to minimize EMI transmission. 2.1.2 J2 – GND This is the return connection for the input power supply of the converter. 2.1.3 J3 – I 2C Input This connector is the I2C input for the converter. 2.1.4 J4 – SYNC INPUT This connector is used to synchronize the switching of the TPS62350 to an external clock source. Pin 1 of J4 connects to the SYNC pin of the TPS62350. Pin 2 of J4 is connected to the ground of the TPS62350. The SYNC input has a 1-MΩ pulldown resistor installed on the EVM board. 2 TPS62350EVM-201 Evaluation Module SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback Copyright © 2006–2018, Texas Instruments Incorporated Setup www.ti.com 2.1.5 J5 – VOUT This is the positive connection from the output of the converter. Connect this pin to the positive input of the load. 2.1.6 J6 – GND This is the return connection for the output of the converter. 2.1.7 JP1 – SDA Converter 1 This jumper is used to tie the I2C SDA pin of the TPS62350 to either a 10-kΩ pullup resistor to the input voltage or to short the SDA pin to ground. The shunt can be removed if the I2C master has its own pullup or operates from a voltage that is different than the input voltage of the TPS62350. The Texas Instruments USB interface adapter provides an active pullup; therefore, do not install a jumper when using the adapter supplied with the EVM. 2.1.8 JP2 – SCL Converter 1 This jumper is used to tie the I2C SCL pin of the TPS62350 to either a 10-kΩ pullup resistor to the input voltage or to short SCL to ground. The shunt can be removed if the I2C master has its own pullup or operates from a voltage that is different than the input voltage of the TPS62350. The Texas Instruments USB interface adapter provides an active pullup; therefore, do not install a jumper when using the adapter supplied with the EVM. 2.1.9 JP4 – ENABLE Converter 1 This jumper enables or disables the converter. Connect the shorting jumper from the center ENABLE pin to either the ON or OFF position. Never leave this pin floating. 2.1.10 JP3 – VSEL Converter 2 This jumper is used to select the output voltage of the converter. Placing a shunt between pins 1 and 2 (HIGH and VSEL) sets the output voltage of the converter to the voltage defined by the internal VSEL1 register. Placing a shunt between pins 2 and 3 (VSEL and LOW) sets the output voltage of the converter to the voltage defined by the internal VSEL0 register. 2.2 Software Setup If installing from a CD, insert the CD and run Setup.exe; follow all the prompts to install the software. If installing from the TI Web site, go to the URL, www.ti.com NOTE: This installation page is best viewed with Microsoft Internet Explorer browser (It may not work correctly with other browsers) Click on the install button; your PC should give you a security warning and ask if you want to install this application. Select Install to proceed. With both types of installation, the software attempts to install the Microsoft Dot Net Framework 2.0 (if it is not already installed) This framework is required for the software to run. After installation, the software should automatically run. During future use of the software, it may prompt you to install a new version if one becomes available on the Web. NOTE: VeriSign™ Code Signing is used to prevent any malicious code from changing this application. If at any time in the future the binaries are modified, the code will no longer attempt to run. SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback TPS62350EVM-201 Evaluation Module Copyright © 2006–2018, Texas Instruments Incorporated 3 Setup 2.3 www.ti.com Hardware Setup Configure JP1, JP2, JP3, and JP4 using a shorting block. These jumpers are used to connect the SDA and SCL lines of the I2C interface to a pullup resistor to the input voltage. The USB interface adapter supplied with the EVM has its own internal pullup resistors; therefore, no additional pullup is required. No jumper is necessary if the Texas Instruments USB interface adapter is used to communicate with the TPS62350EVM board, and JP1 and JP2 should be left open. Configure the jumper on JP3 to the desired setting. Shorting between VSEL and HIGH (pins 1 and 2) makes the TPS62350 power up with the output voltage set by the VSEL1 register. Shorting between VSEL and LOW (pins 2 and 3) makes the TPS62350 power up with the output voltage set by the VSEL0 register. Configure JP4 as desired. Shorting between EN and ON (pins 1 and 2) enables the TPS62350. Shorting between EN and OFF (pins 2 and 3) disables the TPS62350. Connect the USB interface adapter to your PC using the supplied USB cable. Connect the TPS62350EVM board to the USB interface adapter using the supplied 10-pin ribbon cable. The connectors on the ribbon cable are keyed to prevent incorrect installation. USB Interface Adaptor Quick Connection Diagram Host Computer 10-Pin Ribbon Cable USB Interface Adapter USB Cable Green LED Indicates Power EVM Board Connect an input voltage supply to the TPS62350EVM board. The TPS62350 uses an input voltage between 2.7 V and 6 V. Connect the positive input voltage to J1. Connect the input voltage return (ground) connection to J2. 4 TPS62350EVM-201 Evaluation Module SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback Copyright © 2006–2018, Texas Instruments Incorporated Operation www.ti.com 3 Operation This section provides descriptions of the EVM software. The supplied software is used to communicate with the TPS62350EVM. Click on the icon on the host computer to start the software. The software asks which version of the IC is on the board. Check the TPS62350 box, and click the continue box. The software displays the main control panel for the user interface. When initialized, the host computer software automatically searches on the Internet (if connected) for updates. If a new update is available, the software notifies the user of the update and downloads it. The main control panel for the user interface has three main page tabs, EVM Configuration, Output Controls, and Preferences. The software initializes with the EVM Configuration tab selected. This page can be used to set register values that correspond to the hardware configuration of the EVM. The EVM can be operated with the default values. Figure 1 shows the user interface with the Output Control tab selected. This page is used to change the output voltage of the TPS62350 via the register settings. The page has two pulldown boxes, one for VSEL0 and one for VSEL1, with the available output voltage. The voltages listed in the boxes assume PWM mode of operation, so the actual output voltage of the EVM varies from the listed values at light loads. Control Panel Tabs “Output Controls” selected Output Voltage Selection Pulldown Boxes TPS62350 Internal Register Values. Can be altered bit by bit if desired. Updates register when “Write” button is pushed. Figure 1. Output Controls Tab SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback TPS62350EVM-201 Evaluation Module Copyright © 2006–2018, Texas Instruments Incorporated 5 Operation www.ti.com Figure 2 shows the page of the Preferences tab. The Preferences page is used to change the look of the user interface such as the text color or the color of the boxes used to display a logic 1 or 0 in the register displays. The Preferences page also provides an option for cross-linking the values in the VSEL0 and VSEL1 registers within a selectable percentage. The default is no cross-linking. If cross-linking is enabled, then the difference between VSEL0 and VSEL1 cannot exceed the selected percentage. This feature provides a method to limit the ratio of voltages that can be selected. This can be used to avoid inadvertently selecting output voltages, in the output voltage pull-down boxes, that are too high for the application being tested. Cross Link enable and delta selection Figure 2. Preferences Tab All three tabs show the bit representation of all four internal registers of the TPS62350. These bits can be individually altered by clicking on them. Clicking on a bit does not immediately change the register value of the IC. The Write button must be pushed to update the register with the newly selected bit values. Each register display has its own Write button that only updates the register that is displayed next to it. The Write To All Registers button updates all four registers with one push. 6 TPS62350EVM-201 Evaluation Module SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback Copyright © 2006–2018, Texas Instruments Incorporated Test Results www.ti.com 4 Test Results This section provides typical performance waveforms for the TPS62350EVM-201 board. Enable 2 V/div Vin = 3.6 V Vout = 1.05 V Rload = 5 W Vout 0.5 V/div 50 ms/div Figure 3. Start-up From Enable Switch Pin 2 V/div Output Ripple 2 mV/div Vin = 3.6 V Vout = 1.35 V Iout = 500 mA 100 sec/div Figure 4. Output Ripple SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback TPS62350EVM-201 Evaluation Module Copyright © 2006–2018, Texas Instruments Incorporated 7 Test Results www.ti.com PWM MODE Output Current 100 mA/div LPFM MODE Output Voltage 20 mV/div Vin = 3.6 V Vout = 1.05 V 50 ms/div Figure 5. Load Transient, 1-mA to 180-mA Step PWM MODE Output Current 100 mA/div Output Voltage 20 mV/div LPFM MODE Vin = 3.6 V Vout = 1.05 V 50 ms/div Figure 6. Load Transient, 210-mA to 1-mA Step 8 TPS62350EVM-201 Evaluation Module SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback Copyright © 2006–2018, Texas Instruments Incorporated Board Layout www.ti.com 5 Board Layout This section provides the TPS62350EVM-201 board layout and illustrations. Board layout is critical for all high-frequency, switch-mode power supplies. Figure 7 through Figure 11 show the board layout for the TPS62350EVM-201 PCB. The nodes with high-switching frequencies and currents are kept as short as possible to minimize trace inductance. Careful attention has been given to the routing of high-frequency current loops and a single-point grounding scheme is used. See the data sheet for specific layout guidelines. Figure 7. Assembly Layer SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback TPS62350EVM-201 Evaluation Module Copyright © 2006–2018, Texas Instruments Incorporated 9 Board Layout www.ti.com Figure 8. Top Layer Routing Figure 9. Bottom Layer Routing 10 TPS62350EVM-201 Evaluation Module SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback Copyright © 2006–2018, Texas Instruments Incorporated Board Layout www.ti.com Figure 10. Layer 2 Routing Figure 11. Layer 3 Routing SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback TPS62350EVM-201 Evaluation Module Copyright © 2006–2018, Texas Instruments Incorporated 11 Schematic and Bill of Materials 6 www.ti.com Schematic and Bill of Materials This section provides the TPS62350EVM-201 schematic and bill of materials. 6.1 Schematic Figure 12. TPS62350EVM-201 Schematic 12 TPS62350EVM-201 Evaluation Module SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback Copyright © 2006–2018, Texas Instruments Incorporated Schematic and Bill of Materials www.ti.com 6.2 Bill of Materials Table 1. HPA201A Bill of Materials Count 6.3 Ref Des Value Description Size Part Number MFR 2 C1, C3 10μF Capacitor, ceramic, 6.3V, X5R, 10% 0603 C1608X5R0J106KT TDK 1 C2 47μF Capacitor, ceramic, 10V, X5R, 20% 1812 C4532X5R1A476M TDK 1 L1 1.0μH Inductor, SMT, 1.6A, ±30% 3mm x 3mm LPS3010-102NLC Coilcraft 2 R1, R2 10.0k Resistor, Chip, 1/16W, 1% 0603 Std Std 1 R3 1.00M Resistor, Chip, 1/16W, 1% 0603 Std Std 1 U1 IC, 3MHz synchronous step down converter with I2C, 800mA CSP-12 TPS62350YZG TI Related Documentation From Texas Instruments TPS62350, TPS62351 800-mA, 3-MHz Synchronous Step-Down Converter With I2C Compatible Interface in Chip Scale Packaging data sheet (SLVS540) Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (July 2006) to A Revision ........................................................................................................... Page • Updated HPA201A Bill of Materials. .................................................................................................. SLVU177A – July 2006 – Revised January 2018 Submit Documentation Feedback Copyright © 2006–2018, Texas Instruments Incorporated Revision History 13 13 STANDARD TERMS FOR EVALUATION MODULES 1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein. User's acceptance of the EVM is expressly subject to the following terms. 1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not finished products. 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In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. 4 EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information related to, for example, temperatures and voltages. 4.3 Safety-Related Warnings and Restrictions: 4.3.1 User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and customary safeguards. 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However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as accurate, complete, reliable, current, or error-free. 6. Disclaimers: 6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY MATERIALS PROVIDED WITH THE EVM (INCLUDING, BUT NOT LIMITED TO, REFERENCE DESIGNS AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT NOT LIMITED TO ANY EPIDEMIC FAILURE WARRANTY OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS. 6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR IMPROVEMENT, REGARDLESS OF WHEN MADE, CONCEIVED OR ACQUIRED. 7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL 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 HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS. THIS OBLIGATION SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED. 8. Limitations on Damages and Liability: 8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE, INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE TERMS OR THE USE OF THE EVMS , REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF REMOVAL OR REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, RETESTING, OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, LOSS OF USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN TWELVE (12) MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED. 8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY USE OF AN EVM PROVIDED HEREUNDER, INCLUDING FROM ANY WARRANTY, INDEMITY OR OTHER OBLIGATION ARISING OUT OF OR IN CONNECTION WITH THESE TERMS, , EXCEED THE TOTAL AMOUNT PAID TO TI BY USER FOR THE PARTICULAR EVM(S) AT ISSUE DURING THE PRIOR TWELVE (12) MONTHS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED. THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT. 9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s) will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s), excluding any postage or packaging costs. 10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas, without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas. 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