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BQ25910: caux of bq25910

ping qian
Prodigy 30 points
Part Number: BQ25910

Hello , Ti experts:

I have question toward the caux of the bq25910, I know this cap need to be precharged to the 1/2 vin voltage but not detail, could you give me a brief block diagram to illustrate the this caux function in the 3 level buck, thanks a lot.

  • 0
    TI__Guru*** 149265 points

    Hi Ping,

    That capacitor is part of the switched capacitor circuit and is periodically placed in parallel and then in series with CFLY capacitors, to keep the input to the buck converter at 1/2 the input voltage. Unfortunately, I can't give you a block diagram because the circuit is part TI's internal IP.  

    Regards,

    Jeff