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TPS53679: Slva882

GREG TING
Prodigy 60 points
Part Number: TPS53679

Hi Carmen,

After i read the Slva882 document, i have some question. Thanks for your responsed.

Question1. I would like to know where the 19.9A comes from ? Can you provide the formula ?  

Question2. How to use function "floor" ? EX: n=3phase; D=3.3V/12V=0.275; m=floor(n x D)=floor(3*0.275)= ?

Question3. The Icin and Ico formula of multiphase are the same as single phase ? 

  • 0
    TI__Expert 5830 points
    Hi Greg,

    Thanks for the inquiry. Please find my comments here.

    Question1. I would like to know where the 19.9A comes from ? Can you provide the formula ?

    Please refer to formula 1 of slva882, condition here is 12VIN/0.9VOUT with 6phases, so the normalized Cin RMS current is 240A * 0.083 which is 19.92A.

    Question2. How to use function "floor" ? EX: n=3phase; D=3.3V/12V=0.275; m=floor(n x D)=floor(3*0.275)= ?

    Floor(n x D) is the maximum integer that does not exceed the n x D, i.e. floor(3*0.275)=0

    Question3. The Icin and Ico formula of multiphase are the same as single phase ?

    You can use n=1, the result will be the same.


    Chasel