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Class D Switching Power Amplifiers and Power D/A conversion

help !! calculating switch losses
help !! calculating switch losses
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Old 16th December 2008, 04:33 PM   #1
dead rat is offline dead rat  Denmark
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Angry help !! calculating switch losses

hellooooooo homies

Im trying to calculate switch +gate charge losses in my MOSFET, this is done with divine guidance from IRF Class D tutorial.
Fpwm: 400k

Pgd = 2⋅Qg ⋅Vgs ⋅ Fpwm
Psw = Coss⋅ Vbus^2 ⋅ Fpwm+ Id ⋅ Vds ⋅ tf ⋅ Fpwm

Using the FDP3652 and taking into account its the first time im trying this, can anyone verify that:

Pgd is 0.328W

and Psw is ??

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