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TPS54628: Max VBST capacitor value ?

Chris Swinson
Intellectual 360 points
Part Number: TPS54628


The datasheet just says use 100nF ceramic. Though could a 2.2uF be used without any adverse side-effects ?  I am just looking to reduce the parts used on my board as 2.2uF is used in a few other places. 

  • 0
    TI__Mastermind 18510 points

    Hi,

    I didn't check so big boot cap and I checked some parts with 1uf works well, big Cboot will cause long time to charge it to enough Voltage, which make BST-SW voltage high enough to turn on high mos. so I recommend to keep 100nf or <1uf selection.

    Yuchang