Dear Souhgata,

Thank you for giving so much of info.What was the ratings of UPS you have made.and what were the efficiencies.
Could you please help with Transforner design information.

Also I have seen a round core trnsformer some ............

also if you are using full bridge topology how do you drive the bridge..........

If you could help with LLC filter inductor design and transformer ,that would be really great.

Thanks in advance