Hi,
UCC256302 is used as 1000W converter controller.
But we encounter some problem on startup.
It seems like OCP was trigged.
I want to know what cause the problem & how to solve it?
Some waveform are enclosed below for reference.
Thanks.
Figure 1: CH1: RVCC ;CH2: LO ; CH3: VCC
Figure 2: CH1: RVCC; CH2: LO; CH3: VCC;
Figure 3: CH1: FB:; CH2: LO; CH3: VCR;
Figure 4: CH1: ISENS; CH2: LO; CH3 Vout;
Figure 5 : CH1: ISENS; CH2: LO; CH3: Vout;
Figure 6 : CH1 :SS; CH2: LO; CH3: FB;
