Texas Instruments bq20z70EVM-001 User Manual
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Texas Instruments bq20z70EVM-001 User Manual

Sbs 1.1 impedance track technology enabled battery management solution evaluation module
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bq20z70EVM-001 SBS 1.1 Impedance Track™Technology
Enabled Battery Management Solution Evaluation Module
This EVM is a complete evaluation system for the bq20z70/bq29330/bq29412 battery management
system. The EVM includes one bq20z70/bq29330/bq29412 circuit module, a current sense resistor, two
thermistors, and Windows
bq29330 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. An EV2300 board for gas gauge interface is
required to interface this EVM with the PC and can be purchased separately. With the EV2300 interface
board and software, the user can read the bq20z70 data registers, program the chipset for different pack
configurations, log cycling data for further evaluation, and evaluate the overall functionality of the
bq20z70/bq29330/bq29412 solution under different charge and discharge conditions.
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Operation
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Schematic
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Calibration Screen
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Pro (Advanced) Screen
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Impedance Track is a trademark of Texas Instruments.
Windows is a registered trademark of Microsoft Corporation.
SLUU242B - May 2006 - Revised October 2013
Submit Documentation Feedback
-based PC software. The circuit module includes one bq20z70 IC, one
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bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery
Copyright © 2006-2013, Texas Instruments Incorporated
SLUU242B - May 2006 - Revised October 2013
Contents
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List of Figures
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List of Tables
Management Solution Evaluation Module
User's Guide
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Summary of Contents for Texas Instruments bq20z70EVM-001

  • Page 1: Table Of Contents

    ......................Ordering Information ......................Bill of Materials Impedance Track is a trademark of Texas Instruments. Windows is a registered trademark of Microsoft Corporation. SLUU242B – May 2006 – Revised October 2013 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback Copyright ©...

  • Page 2: Features

    The system load and charger connect across PACK+ and PACK– • To the system present pin (SYS PRES) bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013 Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 3: Bq20Z70/Bq29330 Circuit Module Schematic

    NOTE: For the battery pack designer: D3 is not recommended, and should be shorted out if the DSG FET does not have built-in zener diode protection. SLUU242B – May 2006 – Revised October 2013 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 4: Bq20Z70Evm-001 Layout (Silk Screen)

    This section shows the dimensions, PCB layers, and assembly drawing for the bq20z70/bq29330 module. Figure 1. bq20z70EVM-001 Layout (Silk Screen) Figure 2. Top Assembly Figure 3. Top Layer bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013 Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 5: Bottom Layer

    Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 4. Bottom Layer Figure 5. Bottom Assembly SLUU242B – May 2006 – Revised October 2013 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated...

  • Page 6: Bill Of Materials

    1. These assemblies are ESD sensitive; observe ESD precautions. 2. This assembly must be clean and free from flux and all contaminants. Use of no clean flux is not acceptable. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013...
  • Page 7 • Black – Pin 1 (GND) 6. RT1/RT2 should be assembled horizontally laying flat against the board edge with the sensing tip out. SLUU242B – May 2006 – Revised October 2013 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...
  • Page 8 Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 6. Schematic bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013 Management Solution Evaluation Module Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated...

  • Page 9: Evm Hardware And Software Setup

    Input voltage Pack+ to Pack- Charge and discharge current EVM Hardware and Software Setup This section describes how to install the bq20z70EVM-001 PC software, and how to connect the different components of the EVM. System Requirements The bq20z70EVSW requires Windows 2000 or Windows XP. Drivers for Windows 98SE are provided, but Microsoft no longer supports Windows 98;...

  • Page 10: Bq20Z70/Bq29330 Circuit Module Connection To Cells And System Load/Charger

    SMBC SMBC 2. Connect the PC USB cable to the EV2300 and the PC USB port. The bq20z70EVM-001 is now set up for operation. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013 Management Solution Evaluation Module Submit Documentation Feedback Copyright ©...
  • Page 11 With the EV2300 and the bq20z70 EVM connected to the computer, run bq20z70 EVSW from the Start | Programs | Texas Instruments | bq20z70 EVSW menu sequence. The SBS Data screen appears. Data begins to appear once the <Refresh> (single time scan) button is clicked, or when the <Keep Scanning>...

  • Page 12: Sbs Data Screen

    (SLUS686). Ensure that the settings are correctly changed to match the pack and application for the bq20z70/bq29330 solution being evaluated. IMPORTANT: The correct setting of these options is essential to get the best performance. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013 Management Solution Evaluation Module Submit Documentation Feedback Copyright ©...

  • Page 13: Data Flash Screen, 1St Level Safety Class

    The configuration information of the bq29330 and module calibration data is also held in the bq20z70 data flash. SLUU242B – May 2006 – Revised October 2013 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 14: Calibration Screen

    Pack Voltage Calibration calibrates incorrectly. Remove load/external voltage applied between Pack+ and Pack-. Press the Pack Voltage button to calibrate. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013 Management Solution Evaluation Module Submit Documentation Feedback Copyright ©...
  • Page 15 Calibration Screen www.ti.com Figure 10. Calibration Screen SLUU242B – May 2006 – Revised October 2013 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated...

  • Page 16: Pro (Advanced) Screen

    10.3 Programming Allows for device reprogramming from unencrypted and encrypted files. Figure 11. Pro (Advanced) Screen bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery SLUU242B – May 2006 – Revised October 2013 Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 17: Related Documentation From Texas Instruments

    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.
  • Page 18 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.
  • Page 19 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments BQ20Z70EVM-001...

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