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Hi Sir:
I use the ucc24636 as auxiliary power controller, Vout =12V.. And I use the excel UCC24636-Calc to set the external resistance. I have a resistor Q1 in parallel and Q1 is 1200V MOSFET. it Out of work,The Vout i can get 12V. and when i make the DRV float. This pin no single out.