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How to calculate the heat dissipation of a power supply.

How to calculate the heat dissipation of a power supply.

How to calculate the heat dissipation of a power supply.

(OP)
Folks-
I once knew how to do this but the cobwebs are starting to win.  Does anyone know how to calculate the heat dissipated by a power supply given the power supply efficiency and the total power consumption of the system powered by the power supply?

Tunalover

RE: How to calculate the heat dissipation of a power supply.

Ppsu = Pout*(EFF/(1-EFF))

TTFN

RE: How to calculate the heat dissipation of a power supply.

(OP)
IRStuff-
Thanks, as always, for chipping in!  You are one of the most product contributors to this forum and I appreciate it!

I think you meant:

Ppsu = Pout*(1-EFF)/(EFF)

I found the formula after some intense digging at work today.  This makes sense because a perfect power supply has EFF=1 and Ppsu=Pout.  You're formula has Ppsu going to infinity as EFF tends to 1.

Tunalover

RE: How to calculate the heat dissipation of a power supply.

Yep, brain spazz, sorry...

TTFN

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