Does anyone have a discrete circuit for Switching mode power supply ?

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Bhoopal Rao

SMPS USING ONLY MOSFETS AND RELAYS?

Bhaskar Ravishankar

I am not familiar with their designs. But this seemed to be a good resource:

http://www.smpstech.com/

Also, you can try to look at some popular power supply manufacturers like Omron. You can definitely find out more.

Ravikumar Gowda

just search ONSEMI or TI sites very good application proved circuits are available