I'm designing drivers using PI ICs for market use a year ago. Most of our design are buck topology which don't have a simulation tool or Pspice model. Now I'm just using PIXls Designer 9 for Linkswitch-PL and have some inquires:
1- What's best way to select the feedback filter "RC" parameters and what's it's effect on the transient time when moved suddenly from 265Vin t 180Vin.
2- When I put C5=1UF this problem occurred and when I reduced it's value to 0.5uf it's slightly moved.
3- How to reduce the transient time and deviation?