Problem with simulating a PFC pre-regulator in LTSpice using High line

[kahei]

Hi. I use the simulation software named LTSpice to design my PFC pre-regulator. But, when I simulate it using Low input voltage (e.g. Vpk = 165V), the PFC worked properly with the waveforms are smooth. But, when I change the input voltage to 311Vin, there are some mistakes in the waveform, e.g. the switching in the MOSFET has some time delay.

I have try to change the values in the components, but it also has the mistake.

Does anyone suggest me some method to make the PFC work properly in both High line and Low line? Thanks.

 

[FvM]

PFC simulation

I think, you forgot to add some minimal information with your post.

 

[kahei]

Re: PFC simulation

do you mean the simulation waveforms or the circuit?