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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. As such, the goods being provided are not intended to be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental
measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does
not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling
(WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives.

Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from
the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER
AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY
INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user

is not exclusive.

TI assumes

no liability for applications assistance, customer product design, software performance, or infringement of patents or

services described herein.

Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the product. This
notice contains important safety information about temperatures and voltages. For additional information on TI’s environmental and/or
safety programs, please contact the TI application engineer or visit

www.ti.com/esh

.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or
combination in which such TI products or services might be or are used.

FCC Warning

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. It generates, uses, and can radiate radio

frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are
designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may
cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may
be required to correct this interference.

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of 6 V to 25 V and the output voltage range of 0 V to 16.4 V.

Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions
concerning the input range, please contact a TI field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.

During normal operation, some circuit components may have case temperatures greater than 60

°

C. The EVM is designed to operate

properly with certain components above 60

°

C as long as the input and output ranges are maintained. These components include but are

not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified
using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation,
please be aware that these devices may be very warm to the touch.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright © 2009, Texas Instruments Incorporated

Содержание bq20z95EVM-001

Страница 1: ...ate the overall functionality of the bq20z95 bq29412 solution under different charge and discharge conditions Contents 1 Features 2 2 bq20z95 Based Circuit Module 2 3 bq20z95 Circuit Module Schematic...

Страница 2: ...oard Table 1 Ordering Information EVM PART NUMBER CHEMISTRY CONFIGURATION CAPACITY bq20z95EVM 001 Li ion 2 3 or 4 cell Any The bq20z95 bq29412 based circuit module is a complete and compact example so...

Страница 3: ...When the V BAT is 0 V and CHG FET ON the V PACK is as low as the battery voltage In this case the supply voltage for the device is too low to operate This function has three possible configurations a...

Страница 4: ...the fuse blowing test the actual chemical fuse is not provided in the circuit FET Q4 drives TP3 low if a fuse blow condition occurs so monitoring TP3 can be used to test this condition Fuse placement...

Страница 5: ...and Bill of Materials Figure 2 Top Assembly Figure 3 Top Layer Figure 4 Bottom Layer SLUU275 October 2006 bq20z95EVM 001 SBS 1 1 Impedance Track Technology 5 Enabled Battery Management Solution Evalu...

Страница 6: ...Layouts and Bill of Materials www ti com Figure 5 Bottom Assembly 6 bq20z95EVM 001 SBS 1 1 Impedance Track Technology SLUU275 October 2006 Enabled Battery Management Solution Evaluation Module Submit...

Страница 7: ...Std R13 R32 R34 R38 R39 1 R11 Resistor Chip 0 010 1 W xx 2512 Vishay WSL 2512 010 1 R86 3 R15 R16 R40 Resistor Chip 220 k 1 16 W 5 0603 Std Std 1 R17 Resistor Chip 300 1 W 10 2512 WSL 2512 300 1 R86 2...

Страница 8: ...and Bill of Materials www ti com Figure 6 Schematic This section summarizes the performance specifications of the bq20z95 bq29412 circuit module 8 bq20z95EVM 001 SBS 1 1 Impedance Track Technology SLU...

Страница 9: ...until system prompt new hardware found appears Choose select location manually and use the browse button to point to subdirectory TIUSBWin2K XP 1 4 Answer continue to the warning that drivers are not...

Страница 10: ...est connect PRES pin to PACK pin to set SYS PRES state To test sleep mode disconnect the PRES pin Figure 7 bq20z95 Circuit Module Connection to Cells and System Load Charger The following steps config...

Страница 11: ...ms that are selected for scanning are scanned within this period The bq Evaluation Software provides a logging function which logs the values that were last scanned by EVSW To enable this function sel...

Страница 12: ...ngs are correctly changed to match the pack and application for the bq20z95 solution being evaluated IMPORTANT The correct setting of these options is essential to get the best performance The setting...

Страница 13: ...asures discharge current to use the FETs Connect a current source to Batt and Pack to calibrate without using the FETs Measure the pack voltage from Batt to Batt Total of Cell voltages Measure the tem...

Страница 14: ...applied between Pack and Pack Press the Pack Voltage button to calibrate Figure 10 Calibration Screen 14 bq20z95EVM 001 SBS 1 1 Impedance Track Technology SLUU275 October 2006 Enabled Battery Manageme...

Страница 15: ...Invalid values may cause erroneous results When scaling converted hexadecimal values to a higher number of bytes follow these rules When unsigned is selected the left pad contains zeroes When signed i...

Страница 16: ...eters of your application refer to the data sheet or other application reports For the first evaluation the default values may be used 9 Navigate to the Calibration screen Select the check box for CC...

Страница 17: ...e TI Web site at www ti com Document Literature Number bq20z95 SBS Compliant Gas Gauge Enabled With Impedance SLUS757 Track data sheet bq20z90 110 bq29330 Chipset technical reference manual SLUU264 bq...

Страница 18: ...duct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application enginee...

Страница 19: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...

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