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BQ76940: BQ76940 schematic query

Star Xu
Genius 9645 points
Part Number: BQ76940

Hi

Could you explain the purpose of Q18,Q19, attached the schematic.

Thanks

Star

  • 0
    TI__Guru 54715 points

    Hi Star,

    Q18 and Q19 are cell balance transistors for cells 16 and 17 respectively.  The gates are connected by net name to a control from the MCU.  Balance current is limited by the 20 ohm input filter resistors.