Hi,
There is one mosfet with large current in the topology. It is used for synchronous rectification. If the output voltage is 400v, the thermal simulation is ok. But when it is 500v( the max current of this mosfet is -70A, befor the circuit is stable, the current is even much higher), there is a invalid conduction loss error before the circuit is stable. I don’t know what to do. Thank you very much for your time and help.
Best regards,
Emma