Other Parts Discussed in Thread: UCC28910
Hi,
I tried to follow reference design, PMP9608, but there was no +3.3V or -3.3V voltage generated. Here is the link of the reference design,
. I used the same components in reference design.
There was a high voltage generated (around10kHz) by Pin Drain of UCC28910 but there was no voltage between Pin 1 and 2 of transformer. It caused that no output voltages were from AUX side and secondary side. The votlage from Pin Drain was very high because it could be 1100 V when I used AC voltage channel of multi-meter to measure it (Vin was 120V AC). Is there anyone help me solve it?
Thanks.