Texas Instruments bq20z95EVM-001 User Manual Download Page 5 | Manualshive

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Circuit Module Physical Layouts 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 Evaluation Module

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Summary of Contents for bq20z95EVM-001

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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