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Forward converter current

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Ponke

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Hi all!
I've got some questions about the forward converter.

Now, since it is derived from the Buck converter, the output to input voltage ratio is:
\[\frac{Vout}{Vin} = \frac{Ns}{Np}\cdot {D}\]

However, my question is whether the current ratio is simply, assuming Pin = Pout to be:

\[\frac{Iout}{Iin} = \frac{Np}{Ns}\cdot {\frac{1}{D}}\] ?

Also, another question I have is about Imax on the load side.

Consider that Imax is 10 Amps. If the input VOLTAGE drops by say 30%, how will that affect output current?

My thought is that it shouldn't matter, since Imax on the secondary is constant. An input voltage drop doesn't imply a necessary input current drop, or am I on the wrong trail here?

Thankful for any points in the right direction!
Cheers!
 

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