Texas Instruments BQ41Z90 User Manual

Li-ion battery pack manager evaluation module

Hide thumbs

page of 35

/ 35
Bookmarks

Quick Links

Download this manual

www.ti.com

EVM User's Guide: BQ41Z90

BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module

Description

The BQ41Z90EVM is a complete system useful for

evaluating the functionality of the BQ41Z90 fuel

gauge. This gauge is appropriate for applications

cells in series. The EVM includes one BQ41Z90

circuit module, a current sense resistor, and six

thermistors. This evaluation module (EVM) is a

complete evaluation system for the BQ41Z90 battery

management system.

This EVM is intended for basic product functionality evaluation, and does not reflect the full

performance capacity of the device. This EVM is not designed to be included in part of the

manufacturing cycle.

SLUUD64 – DECEMBER 2024

Submit Document Feedback

Features

•

Complete evaluation system for the BQ41Z90EVM

Li-Ion Battery Pack Manager Evaluation Module

and BQ77216 independent overvoltage protection

•

Populated circuit module for quick setup

•

Software that allows data logging for system

analysis

Note

BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module

Description

Need help?

Do you have a question about the BQ41Z90 and is the answer not in the manual?

Questions and answers

Summary of Contents for Texas Instruments BQ41Z90

Page 1 This gauge is appropriate for applications and BQ77216 independent overvoltage protection powered by multi-cell battery systems up to 16 cells in series. The EVM includes one BQ41Z90 • Populated circuit module for quick setup circuit module, a current sense resistor, and six •...
Page 2 BQ41Z90 Technical Reference Manual www.ti.com. 1.4.1 Before You Begin The following warnings and cautions are noted for the safety of anyone using or working close to the BQ41Z90 EVM. Observe all safety precautions. Warning The BQ41Z90EVM circuit module can become hot during operation due to dissipation of heat.
Page 3 Evaluation Module Overview CAUTION The default settings of the BQ41Z90 do not limit performance to the ratings of the EVM. Set all protections appropriately and limit current for safe operation. CAUTION The circuit module has signal traces, components, and component leads on the bottom of the board.
Page 4 2.2 Software Installation Find the latest software version in the BQ41Z90 tool folder on www.ti.com. Use the following steps to install the BQ41Z90 Battery Management Studio software: 1. Download and run the Battery Management Studio setup program from the Development Tools section of the BQ41Z90EVM product folder on www.ti.com.
Page 5 BQ41Z90EVM Quick Start Guide Figure 2-2. BQ41Z90 Circuit Module Connection to Cells and System Load or Charger, Series Configuration Direct connection to the cells: 1N (BAT–), 1P, 2P, 3P, 4P, 5P, 6P, 7P, 8P, 9P, 10P, 11P, 12P, 13P, 14P, 15P, 16P (BAT+).
Page 6 Settings:Configuration:DA Configuration register to set up the number of series cells to match the physical pack configuration. This provides basic functionality to the setup. Other data flash parameters must also be updated to fine tune the gauge to the pack. For help with setting the parameters, see the BQ41Z90 Technical Reference Manual.
Page 7 Needed for Device power-up. Keep the jumper installed. The jumper is useful for measuring power consumption. • Do not install this jumper while flashing the device. SLUUD64 – DECEMBER 2024 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 8 Figure 2-8. Series FET Configuration • Used to determines Series or Parallel FET configuration. See Figure 2-9 Figure 2-10. Figure 2-9. Parallel FET Configuration BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module SLUUD64 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 9 6. The device is now programmed with the BQ41z90FW, the next time BQstudio is opened the device is automatically detected. Find the latest firmware version in the appropriate BQ41Z90 folder on www.ti.com. Use the following steps to install the BQ41Z90 Battery Management Studio software: 1.
Page 10 4 Software 4.1 Battery Management Studio 4.1.1 Registers Screen Run Battery Management Studio from the Start > Programs > Texas Instruments > Battery Management Studio menu sequence, or the Battery Management Studio shortcut. The Registers screen (see Figure 4-1) appears.
Page 11 Software 4.1.2 Setting Programmable BQ41Z90 Options The BQ41Z90 data flash comes configured per the default settings detailed in the BQ41Z90 TRM. Make sure that the settings are correctly changed to match the pack and application for the design being evaluated.
Page 12 The temperature values must be entered in degrees Celsius. 2. Press the Calibrate Gas Gauge button to calibrate the temperature measurement system. 3. Deselect the Calibrate boxes after temperature calibration has completed. BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module SLUUD64 – DECEMBER 2024 Submit Document Feedback...
Page 13 4. Select the ChemID that matches the cells used from the table (see Figure 4-4). 5. Press the Program Selected Chemistry button to update the chemistry in the device. SLUUD64 – DECEMBER 2024 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 14 To find which ChemIDs support IT-DZT, please contact a local TI representative. Note New ChemIDs are required for BQ41Z90, previously made ChemIDs needs to be recreated. 4.1.5 Firmware Screen Press the Programming button to select the Firmware Programming window. This window allows the user to export and import the device firmware.
Page 15 – SMBus Read Block. Command = 0x44. Data read = 06 00 10 12 – That is 0x1210, chem ID 1210 SLUUD64 – DECEMBER 2024 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 16 This section contains information on modifying the EVM and using various features on the reference design. 5.2 Circuit Module Physical Layouts This section contains the printed-circuit board (PCB) layout, assembly drawings, and schematic for the BQ41Z90 and BQ77216 circuit modules.
Page 17 Hardware Design Files Figure 5-2. Bottom Silk Screen Figure 5-3. Top Assembly SLUUD64 – DECEMBER 2024 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 18 Hardware Design Files www.ti.com Figure 5-4. Bottom Assembly Figure 5-5. Top Layer BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module SLUUD64 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 19 Hardware Design Files Figure 5-6. Bottom Layer SLUUD64 – DECEMBER 2024 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 20 Hardware Design Files www.ti.com 5.2.2 Schematic Figure 5-7. BQ41Z90 Schematic BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module SLUUD64 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 24 Diodes Inc. SOD-123 D3, D5, D8, D9, Diode, Zener, 16 V, 500 mW, SOD-123 MMSZ5246B-7-F Diodes Inc. D10, D11 SOD-123 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module SLUUD64 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 25 Terminal Block, 3.5mm Pitch, 2x1, 7.0x8.2x6.5mm ED555/2DS On-Shore Technology Terminal Block, 3.5mm, 3x1, Tin, Terminal Block, OSTTE030161 On-Shore R/A, TH 3.5mm, 3x1, TH Technology SLUUD64 – DECEMBER 2024 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 26 R39, R62, R89 Grade 0, 0603 R29, R30, R31, RES, 15, 5%, 1 W, AEC-Q200 2512 CRCW251215R0JNEG Vishay-Dale Grade 0, 2512 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module SLUUD64 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 27 RT1, RT2, RT3, Thermistor NTC, 10.0k ohm, 1%, Disc, 5x8.4 mm 103AT-2 SEMITEC RT4, RT5, RT6, Disc, 5x8.4 mm Corporation SLUUD64 – DECEMBER 2024 BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 28 Micro SD Connector, Pitch 1.1 mm, Molex 8 Position, Height 1.4 mm, -25 to 85 degC, RoHS, Tape and Reel BQ41Z90 Li-Ion Battery Pack Manager Evaluation Module SLUUD64 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
Page 29 Microsoft Corporation. All trademarks are the property of their respective owners. 7 Related Documentation from Texas Instruments • Texas Instruments, BQ41Z90 2-Series, 3-Series, and 4-Series Cell Li-Ion Battery Pack Manager with Dynamic Z-Track™, data sheet • Texas Instruments, BQ41Z90 Technical Reference Manual •...
Page 30 STANDARD TERMS FOR EVALUATION MODULES 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.
Page 31 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
Page 32 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
Page 33 www.ti.com 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.
Page 34 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
Page 35 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...

This manual is also suitable for:

Bq41z90evm