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The Resonant SMPS Design Tool

Question asked by baokang li on Nov 20, 2019


I use The Resonant SMPS Design Tool for a powersupply design with an input of 90V-264Vac and output of 57Vdc/9A.But I can't understand something about the transformer.Please see the attached file.

There is one pin of TX1 connected to nothing.Is it the inductor for LLC?

And how does every pin correspond to the turns?