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TPS40200: total power-loss calculation on P21

Gerhard van Rensburg
Intellectual 400 points
Part Number: TPS40200

How does TI get to the 0.916W total power-loss calculation on P21 for the FET

  • 0
    TI__Expert 4100 points
    Hello,
    From design parameters table we have following:
    Pout=8.25W, Eff=90%
    With these parameters taken in consideration:
    Eff = Pout/Pin --> we get Pin=Pout/Eff --> 8.25/.9=9.166W
    From here power loss is Pin-Pout=9.1666-8.25=.916W

    Hope this helps
    Regards
    Brani