MOSFET Slope Compensation IC Recommendations

I made a flyback converter with a dutycycle of 0.8. After the experiment, there will be a problem of sub-harmonic oscillation. Please recommend me a slope compensation IC with a mosfet withstand voltage of less than 300.

Thank you!

We have a family of controllers for flyback that provide secondary side regulation or have slope compensation built in, particularly the HFXXX or HFCXXX, like HF500 - please follow the link to choose a device that best fits your requirements.

Flyback Controller | Secondary Side Regulation | MPS | Monolithic Power Systems