Other Parts Discussed in Thread: UCC27511, UCC28070
HI TI team
I design 1200W that using PFC (ucc28070) and drive ic (ucc27511)
I found that when the load is between 0 and 300W, AC instantly switches from 90Vac to 264Vac or from 264Vac to 85Vac
In this case, the GDB pin driver IC will occasionally be damaged
I want to know if the operation of switching AC instantly is allowed?
When UCC27511 is damaged, pin 3 is a short to ground.