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BQ76952: Balancing switching speed

Koby Sullivan
Prodigy 30 points
Part Number: BQ76952

Hello, 

We are using the BQ76952 in manual mode. A balancing strategy we wish to try requires alternating balancing between Odd cells and Even cells very quickly. In the datasheet, it says the cell balancing interval has a minimum of 1 second. What is the cause of this limitation? Is there a way to speed up the transitions?

Thank you

  • 0
    TI__Mastermind 42060 points

    Hello Koby,

    When using host-controlled/manual cell balancing, the cells selected would continue to be balanced until Settings:Cell Balancing Config:Cell Balance Interval, or a new balancing subcommand is issued (which resets the timer), this is mentioned in Section 4 Considerations for a Host-Balancing Algorithm of the Cell Balancing With BQ769x2 Battery Monitors application note.

    So I would imagine that if you issue a balancing command to balance different cells before the interval finishes, you could balance between odd and even cells faster than the 1-second interval, I'd suggest to test from your side to confirm this.

    Best Regards,

    Luis Hernandez Salomon