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TPS54327: Is low-side switch ON or OFF? When EN-pin is low.

Yuki Kamura
Prodigy 50 points
Part Number: TPS54327


Hi, TI team.

Is low-side switch ON or OFF? When EN-pin is low. 

Customer concern about damages to low-side switch when quickly and constantly switching of EN-pin.

KAMURA

  • 0
    TI__Genius 15135 points
    Hi, Sir

    1. When EN=low, the low side and high side switch are both OFF state.
    2. When EN toggle quickly, IC will not be damaged.
  • 0 in reply to Zhao Ma
    Prodigy 50 points

    Hi Zhao-san

    Thanks to your quick reply.

     I have another question.

    Does this IC have the fanction of "Output discharge control"?

    Customer do not need "Output discharge control" fanction.

    I confirm the data sheet but I could not look up the word of "Output discharge control".

     Does below mean that TPS54327 has "Output discharge control" fanction?

    Sincerely, 

    KAMURA

  • 0 in reply to Yuki Kamura
    TI__Genius 15135 points
    Hi, Sir

    IC don't have "output discharge control" function.
    In the EC table, when VFB=0.8V, the IFB=~0A, which means the FB input resistance is very very large, in other words, FB pin don't have discharge function.