I have designed a 14V SMPS using PI Expert.
Please refer to the attached design.
Now if I supply DC input voltage of 300V Using Bench Power Supply, The SMPS does not start.
If I supply DC input voltage between 100-230V it turns on and works.
300V translated roughly to 210V RMS AC Supply.
What could be the problem?
Innoswitch3-CE Startup Problem