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bq27620 EVM: Single-Cell Impedance Track Technology
This evaluation module (EVM) is a complete evaluation system for the bq27620. The EVM includes one
bq27620 circuit module, a current sense resistor, an EV2300 PC interface board for gas gauge interface,
a PC USB cable, and Windows™-based PC software. The circuit module includes one bq27620 integrated
circuit and all other onboard components necessary to monitor and predict capacity for a system-side fuel
gauge solution. The circuit module connects directly across the battery pack. With the EV2300 interface
board and software, the user can read the bq27620 data registers, program the chipset for different pack
configurations, log cycling data for further evaluation, and evaluate the overall functionality of the bq27620
solution under different charge and discharge conditions. The latest Windows TM - based PC software
can be downloaded from the product folder on the Texas Instruments Web site.
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SLUU655 - October 2011
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Copyright © 2011, Texas Instruments Incorporated
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bq27620 EVM: Single-Cell Impedance Track Technology
User's Guide
SLUU655 - October 2011
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Summary of Contents for Texas Instruments BQ27620
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Page 1: Table Of Contents
The circuit module connects directly across the battery pack. With the EV2300 interface board and software, the user can read the bq27620 data registers, program the chipset for different pack configurations, log cycling data for further evaluation, and evaluate the overall functionality of the bq27620 solution under different charge and discharge conditions. -
Page 2: Features
Kit Contents • bq27620 circuit module (HPA735) This EVM is used for the evaluation of bq27620-based products. Ensure that you visit the product Web folder at www.ti.com to download the latest firmware version for the associated product to be evaluated. -
Page 3: Bq27620-Based Circuit Module
Circuit Module The bq27620-based circuit module is a complete and compact example solution of a bq27620 circuit for battery management. The circuit module incorporates a bq27620 battery gas gauge integrated circuit (IC) and all other components necessary to accurately predict the capacity of 1-series Li-ion cell. -
Page 4: List Of Figures 1 Bq27620Evm Layout - Silk Screen
Circuits Module Physical Layout and Bill of Material www.ti.com Figure 1. bq27620EVM Layout – Silk Screen Figure 2. bq27620EVM Layout – Top Assembly SLUU655 – October 2011 bq27620 EVM: Single-Cell Impedance Track Technology Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated... -
Page 5: Bq27620Evm Layout - Top Layer
Circuits Module Physical Layout and Bill of Material www.ti.com Figure 3. bq27620EVM Layout – Top Layer Figure 4. bq27620EVM Layout – Bottom Layer SLUU655 – October 2011 bq27620 EVM: Single-Cell Impedance Track Technology Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated... -
Page 6: Bill Of Material
Test Point, White, Thru Hole Color Keyed 0.100 x 0.100 inch 5002 Keystone BQ27620YZF IC, System-Side Impedance Track w/ Dynamic Voltage BQ27620YZF Correlation Fuel Gauge With DSBGA SLUU655 – October 2011 bq27620 EVM: Single-Cell Impedance Track Technology Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated... -
Page 7: Schematic
Circuits Module Physical Layout and Bill of Material www.ti.com Schematic Figure 5. bq27620EVM Schematic SLUU655 – October 2011 bq27620 EVM: Single-Cell Impedance Track Technology Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated... -
Page 8: Bq27620 Circuits Module Performance Specification Summary
Software Installation Find the latest software version in the bq27620 tool folder on power.ti.com. Make a search by Part Number for bq27620 to access the tool folder. Use the following steps to install the bq27620EVSW software: 1. -
Page 9: Pc Interface Connection
Operation This section details the operation of the bq27620 EVSW software. Starting the Program Run bq27620 EVSW from the Start | Programs | Texas Instruments | bq Evaluation Software menu sequence. The DataRAM screen (Figure 7) appears. Data begins to appear once the <Refresh> (single time scan) button is clicked, or when the <Keep Scanning>... -
Page 10: Setting Programmable Bq27620 Options
Operation www.ti.com The bq27620 EVSW 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. - Page 11 To read all the data from the bq27620 data flash, click on menu option | Data Flash | Read All |. To read all the data from the bq27620 data flash, click on menu option | Data Flash | Read All |. <Enter>, which writes the entire tab of flash data, or select menu option | Data Flash | Write All |.
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Page 12: Calibrate Screen
2. Type the temperature value into Enter Actual Temperature. 3. Select if the temperature sensor to calibrate is the internal or external. SLUU655 – October 2011 bq27620 EVM: Single-Cell Impedance Track Technology Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated... -
Page 13: I2C Pro Screen
Figure 10. I2C Pro Screen Related Documentation from Texas Instruments To obtain a copy of any of the following TI documents, 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 14 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 15 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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