i am in the process of designing a push pull inverter.I had heating issues in primary and i happen to probe the drain voltage of the mosfets connected across the halfs of transformer.The images of the ringing of the drains have been attached.How should i calculate the snubber for this ringing.how should i calculate the cap and resistor values for this type of ringing of the drain voltage.Two channels have been probed and the channels represent the halfs of the transformer with the mosfets.How should i estimate the power rating of the resistor values in design? I ma using STP40NF20 in my pushpull design.My maximum vds is 42v.
