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Have you got the various loss terms in analytical (or
vector) form with appropriate indices?
Efficiency is 1 minus the sum of all ineffiencies (loss
terms). Conduction loss in each switch for its duty
factor, which in turn follows step-down ratio; switching
losses which depend on frequency, VIN and VOUT;
internal steady state losses; input and output filter
losses - and so on.
When you have the formula or array-map then the
process of plotting is like any other, I'd suppose.
Hopefully that is not the question, how to press
the right button.
you cant really plot a graph of it.
Make a list of all the loss factors
Bottom fet if you put schottky across it then it has no switchign losses.
Top fet has switching losses
Remember the inductor core losses.
Those are your main loss factors...plot them if you want though of course.
aLSO REMEMBER CONDUCTION LOSSES IN INDUCTOR (sorry about capitals)
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