I am designing a new power supply with TOP258PN
IP voltage range - 100VDC to 450Vdc
Op : 350Vdc @30mA
Transformer Details :
Primary - L 1050mH - 30Turns - 26SWG
Secondary - L 10mH - 100Turns - 25SWG
Please find an attched schematic diagram.
Problem: Power supply not working continuously. it works on and off continuously.