UCC28C41 use in Flybuck System, Schematic Design VCC input voltage 12V, VCC input resistance 4.7K,The phenomenon is as follows:
1、When UCC28C41 cannot boot,VCC input voltage measure is 1.53V;
2、When short input resistance 4.7K,Flybuck System recover and start;
3、After successful startup, it rarely appears subsequently;
4、we use mosfet Qg is 62 nC;
We need your help to provide a solution, thank you.
