SIC MOSFET (C3M0280090J) Used in Flyback Converter Drain to Source voltage stays 20V when switching.

Vignesh4488

Hi,
I am using SIC MOSFET (C3M0280090J) in my Isolated Flyback Converter.
In that I have facing one problem. When MOSFET switches, Drain to Source stays in 20V instead of 0V even though Gate of MOSFET is 10V. I have directly probed across MOSFET because I have used isolation trans
former at input.
I have attached my schematic and observed waveform for reference.
Kindly suggest solution for above problem.
In waveform,
Green - MOSFET Gate Orange - Vds of MOSFET
Thanks,
Vignesh.