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BQ76907: BQ76907 cell balance status read back question

Jessica Wu74
Expert 5980 points
Part Number: BQ76907

Tool/software:

Hi Team,

Could you possible help to check for below R:10 40 2, what does it mean for below cell balance read back command mean? Could you possible share more detail explain for it?

My customer want to know if the cell balancing is actived after they configured CB_ACTIVE_CELLS(), and currently we ask customer read back through 0x62 register to get CB status, but it can't get to know which cell has the CB activated, could you please also help to share how could customer get to know which cell been activated CB function? 

Thanks a lot for your help.

Best regards

Jie

  • 0
    TI__Expert 5980 points

    Hi Team,

    Based on above question, customer found every time when they read back 0x62 status, it would spend about 700ms~800ms could read back the correct status, is this normal? Customer would read back repeat every 200ms.

    Best regards

    Jie

  • 0 in reply to Jessica Wu74
    TI__Mastermind 25880 points

    Hi Jie,

    R: 10 40 2 is in the format of our command sequence function on the eval software. This translates to reading 2 bytes from the 0x40 address on the BQ. 0x40 is the transfer buffer for outgoing data. This line is just meant to read back if the cells are successfully balancing.

    Reading from the 0x0083 subcommand will allow the customer to see which individual cells are balancing.

    Regards,

    Max Verboncoeur