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LP8860-Q1: mosfet selection

Qianqian
Genius 5010 points
Part Number: LP8860-Q1


Hello TI Experts,

From the datasheet, the requirment of boost mosfet is 60V 15A,
I used to use FDD86581-F085,Now I change to BUK9Y53-100B, then it works well~
I'd like to know besides 60V 15A,what should I take into account when choosing the mosfet?

  • 0
    TI__Prodigy 670 points

    Normally there are sveral spec we need to consider for MOSFET selection.

    1. VGS(TH), basically lower is better. VGS(TH)_max need to be less than 4V, because the charge pump is disable and VDD is 5V.

    2. Rds(on), lower is better. Normally RDS(ON)need to be less than 100mohms at VGS=4.5V.

    3. Qg(total) lower is better.

    Best regards,

    Xianghao