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about UCC28063 interleaving PFC static test

Kuo Duke
Expert 2040 points
Other Parts Discussed in Thread: UCC28063

Hi all,

I have problem about UCC28063 interleaving PFC
When I do static test for UCC28063, test condition as below

VCC 16V
VSENSE 2.5V
HVSEN 2.5V
PHB 2.5V
VINAC 2.5V, By DC Power supply

and measurament Vref is 6V, but gate driver is not response, why???