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POWERSTAGE-DESIGNER: Bug in single switch forward designer - cannot choose turns ratio

Emmanuel Coleman
Prodigy 20 points

Part Number: POWERSTAGE-DESIGNER

Tool/software:

First time user, I wanted to run a quick check on a forward converter design but for some reason I cannot change the turns ratio.  Under "Choose Values" I can modify the inductances but the "turns ratio" text box is inactive so the rest of the calculations are out of whack - I'm seeing 130% duty cycle with negative off-time.

Has anyone come across this issue?