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BQ76PL455A-Q1: Open Wire Detection?

Werner Breitenberger
Prodigy 45 points
Part Number: BQ76PL455A-Q1

Hy at all,

I have problems with the Open Wire Detection.

Someone have an example with the protocol on URAT?

Regards,

Werner

  • 0
    TI__Mastermind 19795 points
    Hi Werner,

    Please view section 7.3.12.8.1 ("7.3.12.8.1 Window Comparator Special Considerations") of the PL455 datasheet for more information on how the squeeze function is used to detect open-sense wire conditions.

    Also view the TSTCONFIG[EQ_SQUEEZE_EN] and CBENBL[BALANCE_EN] register bits for using this functionality. These two registers should allow you to set and test open-sense wire conditions.

    Regards,
    Vince
  • 0 in reply to Vince
    Prodigy 45 points
    Hello,

    I simply switch on the SQEEZE and the balances for each individual one after the other and then notice a voltage breakdown in this cell and a voltage increase in the two neighboring cells and from this should I conclude an open line?

    Regards,
    Werner
  • 0 in reply to Werner Breitenberger
    TI__Mastermind 19795 points
    Hi Werner,

    That is correct! The voltage differential between the open line and the above/below lines will be greater than normal.

    Regards,
    Vince