Nano Power Inverter - Roll Your Own Style

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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 10:23pm 14 May 2019      

This all looks very good Mike.

I originally used pulse transformers for generating the isolated gate driver voltages the same way you are doing. I found it difficult to control the final dc voltage on the isolated side. Overshoot or ringing on the secondaries of the transformer would sometimes produce some worryingly high dc voltages.

I managed to fix all that by using full wave rectification, and a suitable zener.
It then all ended up working much more predictably.
Cheers,  Tony.