PWM ic for active clamp flyback

Can anyone suuggest me a good PWM (current mode control) ic for active clamp flyback with operating frequency of 500khz

In the bathroom there is "Electronic Products" August 2018.
I found the article on line: UCC28780
I can not remember what IC I used last time. We saves 2 watts but the price was probably too much. I think we should have put more money into a better transformer design and saved the ring energy that way.
TI
NCP1568