I have a circuit I am bringing up which is designed per the 45W EVM reference kit with GAN devices. I am bringing it up by first applying 15V to Vcc, but see no 5V Vref under any conditions. INput current is 0.2ma. RUN_EN goes to 3V, SWS goes to 15V, HVG is 0V...Since the CKT is designed for Vin of 400V, I wanted to see of some of the basic control signals output first. Is this even possible?