Other Parts Discussed in Thread: PMP10344
Hi there,
I am using UCC28722 for energy meter application with three phase input by using guidelines of SLAU721A.
The components values as per SLAU721A are all same with difference that input instead of single phase its 3 phase bridge rectifier
My issue is that Ic's are getting damaged at normal power Up, I have checked the resistances at various PINs then it shows base drive pin ie PIN 3 of UCC28722 is shorted to ground or
sometimes VDD.