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TPS60402: Isolated power supply

Part Number: TPS60402


I am making isolated power supply using tps60402 ic

but i am not getting output.

please suggest me any correction in schematic attached.



  • Hello Megha,

    My pleasure to help you.

    It seems to me you are trying to reply the configuration you can find at page 53 of this TI Design:

    To accomplish the same operation you must have on pin of the primary side of the transformer fixed at Vin/2. In your case Vin/ 2 is accomplished by a capacitor||resistor divider. If you had only capacitors, It would have worked anyway, but that's not a problem. I rather think you made a typo, because R1 and R2 must be the same value.