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  • BQ40Z80: Question to ShutDown and MaxError

    Part Number: BQ40Z80 Tool/software: Hi We are working on an BMS with BQ40Z80. We are wondering what happen to the MaxError after the BMS has been a long time in ShutDown. After startup to normal mode, will the MaxError be higher or even 100% or will…

  • BQ40Z80: QMAX not updating -> FCC jumps

    Part Number: BQ40Z80 Tool/software: Hello, Hoping you can help debug an issue with our battery design utilizing the BQ40Z80. QMAX does not appear to be updating during normal cycling (with long, multi-hour rests - Rest bit is setting). Additional…

  • BQ40Z80: BQ40Z80 SMB Nack

    TI Thinks Resolved
    Part Number: BQ40Z80 Tool/software: Hi TI team, I found this error during testing. Please refer to the attached image. What event has occurred? How can I resolve it? Please assist in confirming. Thanks!…

  • BQ40Z80: GPC tool shows "unexpected error"

    Part Number: BQ40Z80 Tool/software: I am trying to do the room temperature performance update but when I send the .zip file I get: Gauging Parameter Calculator (GPC) Tool - Upload An Unexpected error…
    • Answered

  • BQ40Z80: BQ40Z80 Emergency Shutdown (EMSHUT) function is inoperative.

    Resolved
    Part Number: BQ40Z80 Tool/software: Dear Nick Richards , I have checked the EMSHUT bit in Operation Status B and confirmed that it never sets to 1. My apologies for the delayed response in the previous post. BR's, Ramana
    • Resolved

  • BQ40Z80: flash corruption during INIT

    Part Number: BQ40Z80 Tool/software: Hi there, this problem is a followup of this one: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1402001/bq40z80-bms-field-reject---no-access-to-memory---eeprom-erased…

  • BQ40Z80: Chemistry ID 503 could not found

    Part Number: BQ40Z80 Other Parts Discussed in Thread: BQSTUDIO Tool/software: I received a response with chemistry ID 503 via the GPC Tool. However, I can't find ID 503 in bqstudio. Please check. (chemistry version: 1177) GLBE_XK904160_3000mAh-report…

  • BQ40Z80: BQ40Z80

    Part Number: BQ40Z80 Other Parts Discussed in Thread: GPCCHEM Tool/software: Hello, I have tried multiple times to complete the learning cycle with the battery pack manager bq40z80 and it always fails after the charging cycle. Discharging and…

  • BQ40Z80: Not able to establish SMBus communication from custom designed board using bq40z80

    Part Number: BQ40Z80 Other Parts Discussed in Thread: BQSTUDIO , EV2400 Tool/software: Trying it communicate with external MCU. Tried pressing wake up pin, were getting voltage at the output but not getting detected in the MCU. SMBus pins were pulled…

  • BQ40Z80: Pack pin voltage is varying

    TI Thinks Resolved
    Part Number: BQ40Z80 Tool/software: Hello, In 4s BMS with Bq40z80 .It ws working normally before but when checked today the pack pin voltage is varying between 9.4 V to 12.2 V when the battery voltage was 16.45V. Why is this happening ?

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