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Self oscillating isolated power supply recommendation

Atul Bhakay1
Prodigy 160 points

Hi, I want to design a low power, self oscillating isolated power supply. The input is 100VAC to 265VAC and output is 5V, 0.2 amps. To make it cost effective I would like to design it with a simple self oscillating, isolated flyback topology.Do you have an

I want to design a low power, self oscillating isolated power supply.

The input is 100VAC to 265VAC and output is 5V, 0.2 amps.

To make it cost effective I would like to design it with a simple self oscillating, isolated flyback topology.
Do you have any design equations for this self oscillating power supply?

Any design solutions that you may have ?

Regards

Atul