Texas Instruments bq20z95EVM-001 User Manual
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Texas Instruments bq20z95EVM-001 User Manual

Sbs 1.1 impedance track technology enabled battery management solution evaluation module
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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, an EV2300 PC interface
board for gas gauge interface, a PC USB cable, and Windows™-based PC software. 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 conditions.
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SLUU275 - October 2006
Submit Documentation Feedback
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List of Tables
bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology
Enabled Battery Management Solution Evaluation Module
User's Guide
SLUU275 - October 2006
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Summary of Contents for Texas Instruments bq20z95EVM-001

  • Page 1: Table Of Contents

    User's Guide SLUU275 – October 2006 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, an EV2300 PC interface board for gas gauge interface, a PC USB cable, and Windows™-based PC software.

  • Page 2: Features

    • To the serial communications port (SMBC, SMBD) • The system load and charger connect across PACK+ and PACK- • To the system-present pin (SYS PRES) bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006 Enabled Battery Management Solution Evaluation Module...

  • Page 3: Bq20Z95 Circuit Module Schematic

    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. SLUU275 – October 2006 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 4: Circuit Module Physical Layouts And Bill Of Materials

    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) bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006 Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 5: Top Assembly

    Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 2. Top Assembly Figure 3. Top Layer Figure 4. Bottom Layer SLUU275 – October 2006 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 6: Bottom Assembly

    Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 5. Bottom Assembly bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006 Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 7: Bill Of Materials

    IC, Voltage Protection for 2, 3, 4 Cell Lion , 2nd SSOP-08 BQ29412DCT Protection, 4.45 V OVP IC, Cool-GG Programmable Battery Management TSSOP30 bq20z95DBT SLUU275 – October 2006 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 8: Schematic

    Figure 6. Schematic bq20z95/bq29412 Circuit Module Performance Specification Summary This section summarizes the performance specifications of the bq20z95/bq29412 circuit module. bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006 Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • 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 bq20z95EVM-001 PC software, and how to connect the different components of the EVM. System Requirements The bq20z95EVSW software requires Windows™ 2000 or Windows XP. Drivers for Windows 98SE are provided, but Microsoft™...

  • Page 10: Bq20Z95 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 bq20z95EVM-001 is now set up for operation. bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006 Enabled Battery Management Solution Evaluation Module...

  • Page 11: Operation

    Operation This section details the operation of the bq20z95 EVSW software. 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 <Refresh> (single time scan) button is clicked, or when the <Keep Scanning>...

  • Page 12: Data Flash Screen, 1St Level Safety Class

    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. bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006...

  • Page 13: Calibration Screen

    Make sure Voltage Calibration has been performed for the pack. If Voltage Calibration is not performed, then Pack Voltage Calibration calibrates incorrectly. SLUU275 – October 2006 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 14: Calibration Screen

    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 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006 Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 15: Pro (Advanced) Screen

    • 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 SLUU275 – October 2006 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback...

  • Page 16: Pack Assembly And The Bq20Z95

    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. bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology SLUU275 – October 2006 Enabled Battery Management Solution Evaluation Module...

  • 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.
  • Page 18 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit 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. Persons handling the product(s) must have electronics training and observe good engineering practice standards.

  • Page 19: Important Notice

    IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.

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