My customer operation in in the 600W, there was a problem, the following two pictures are measured twice Vds synchronous rectifier MOSFET, the left is the normal operationOf the wave, the right is the shutdown waveform, will cause the right figure this way, it should be its IC BLK off voltage is too low, so the LLC has been until the capacitor voltage is about 240V before closing, and then cause this problem, Want to confirm whether this point can adjust the resistance to improve the turn-off point (about 300V or so), or have other views, please inform, thank you.
