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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, an EV2300 PC interface board for
gas gauge interface, a PC USB cable, and Windows™-based PC software. The circuit
module includes one bq20z70 IC, one 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. 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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SLUU242A - May 2006 - Revised June 2006
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bq20z70EVM-001 SBS 1.1 Impedance Track™Technology
Enabled Battery Management Solution Evaluation Module
User's Guide
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Related Manuals for Texas Instruments bq20z70EVM-001
Summary of Contents for Texas Instruments bq20z70EVM-001
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Page 1: Table Of Contents
User's Guide SLUU242A – May 2006 – Revised June 2006 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, an EV2300 PC interface board for gas gauge interface, a PC USB cable, and Windows™-based PC software. - Page 2 ............Performance Specification Summary ............Circuit Module to EV2300 Connections Impedance Track is a trademark of Texas Instruments. Windows is a trademark of Microsoft Corporation. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology SLUU242A – May 2006 – Revised June 2006 Enabled Battery Management Solution Evaluation Module...
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Page 3: Features
• The system load and charger connect across PACK+ and PACK– • To the system present pin (SYS PRES) SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 4: Bq20Z70/Bq29330 Circuit Module Schematic
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. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology SLUU242A – May 2006 – Revised June 2006 Enabled Battery Management Solution Evaluation Module... -
Page 5: List Of Figures 1 Bq20Z70Evm-001 Layout (Silk Screen)
Circuit Module Physical Layouts and Bill of Materials Board Layout 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 SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology... -
Page 6: Bottom Layer
Circuit Module Physical Layouts and Bill of Materials Figure 4. Bottom Layer Figure 5. Bottom Assembly bq20z70EVM-001 SBS 1.1 Impedance Track™Technology SLUU242A – May 2006 – Revised June 2006 Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 7: Bill Of Materials
Wire, insulated 24 AWG. brown, 18 inches (±3 inches) (SDA) Alpha 1854-7 Heatsink, 1 inch Notes: 1. These assemblies are ESD sensitive; observe ESD precautions. SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... - Page 8 • Black – Pin 1 (GND) 6. RT1/RT2 should be assembled horizontally laying flat against the board edge with the sensing tip out. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology SLUU242A – May 2006 – Revised June 2006 Enabled Battery Management Solution Evaluation Module...
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Page 9: Schematic
Circuit Module Performance Specification Summary This section summarizes the performance specifications of the bq20z70/ bq29330/bq29412 circuit module. SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 10: 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 11: 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. SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module... -
Page 12: Operation
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 13: Sbs Data Screen
IMPORTANT: The correct setting of these options is essential to get the best performance. SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 14: 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. bq20z70EVM-001 SBS 1.1 Impedance Track™Technology SLUU242A – May 2006 – Revised June 2006 Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 15: Calibration Screen
Pack Voltage Calibration calibrates incorrectly. Remove load/external voltage applied between Pack+ and Pack-. Press the Pack Voltage button to calibrate. SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 16: Calibration Screen
Calibration Screen Figure 10. Calibration Screen bq20z70EVM-001 SBS 1.1 Impedance Track™Technology SLUU242A – May 2006 – Revised June 2006 Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 17: 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. SLUU242A – May 2006 – Revised June 2006 bq20z70EVM-001 SBS 1.1 Impedance Track™Technology Enabled Battery Management Solution Evaluation Module Submit Documentation Feedback... -
Page 18: Related Documentation From Texas Instruments
Figure 11. Pro (Advanced) Screen 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 19 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 20 TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products...
- Page 21 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments BQ20Z70EVM-001...