Other Parts Discussed in Thread: UCC256301
Hi,
We are using TIDA-010015 design for 500W power supply design.
We are in board bring up stage. We have bypass the PFC stage and working on LLC stage.
But MOSFETs Q3,Q2 gets damaged (Short between all pins) and also UCC256301 gets damaged.
We have verified voltage levels at all pins of llc controller like VCR, BLK which are within limits as per datasheet.
Also all waveforms Isens, Ho,Lo,VCR are as expected.
But we are unable to find out why this is happening. We tried on two different PCB boards but MOSFET and LLC controller
always gets damaged.
We also tried with UCC256402A (with respective changes) but same result we observed.
Can you please help us to resolve the issue.
Regards
Pravin Khisti
Pravin Khisti