How to calculate output peak currents for multiple output transformer?

No comment.

Of course one solution is to use PI Expert.

Thanks for posting your question into forum , we appreciate your time and patience.
The Best way to check whether your calculated peak current is practical current value is to measure the primary current.Cut the Trace from Transformer winding to Drain Pin of Our device and put a loop of wire, measure the Current Limit using Current Probe and Oscilloscope.
Please go through some of SMPS design Books , there are so many resources which can explain how to measure and calculate SMPS Currents and Equations.

Regards,
PI-KSAN

Thank you.
Regards, Zeljko.

Hi, I am troubleshooting a proven circuit board using the TOP234Y chip. The problem that I have found is that the control pin voltage never gets to 5.8V. When I check the voltage it is 5.38V. Other working boards that I have tested has the voltage at the control pin of 5.8V. The DC voltage on the drain pin of the bad board is 160V DC. I have replaced pretty much everything that I thought might cause the voltage on the control to stay at 5.38V but I am missing something. Your input would be greatly appreciated.

In my previous message I forgot to mention that the TOP234Y is being used in a 3 pin configuration with the F pin tied to the control pin and the S pin and M pin tied to ground.

Thanks for Posting your question into forum and we apologize for the delayed response.
Could you please send us the Schematic , so that we will come to know whats exactly going on.

Regards,
PI-KSAN