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BQ27750: BQ27750 firmware bug

Danil Koshelev
Intellectual 320 points

Part Number: BQ27750

Hello, 

Based on your product BQ27750, we have released a large quantity of equipment, but only now we have started receiving claims from our customers. We want to find an opportunity to solve the problem with less losses for the business. Please provide detailed information about the causes and possible consequences of the bug "firmware bug in the ROM which can lead to memory corruption."  

I have additional question about OperationStatus()[SDM]. Is it enable (activate) by AltManufacturerAccess() only?

Thanks for your help!

  • 0
    TI__Guru** 105760 points

    Hello Danil,

    I will connect you to someone who has more information.

    Yes SDM is only set from the command.

    Sincerely,

    Wyatt Keller

  • 0
    TI__Intellectual 2025 points

    Hi Danil,

    Do to NDA nature of certain documents, please connect with me offline to discuss. Please send me a connect request through E2E.

    The general observations we have made is this issue can happen when gauge is waking from shutdown. When the memory corruption occurs, it can impact the gauge initialization process such that it can not fully complete, causing the gauge to experience behavior like continuous reset or not being able to wake up and communicate. 

    Thanks,

    Rushi