PMP40766: How to test the constant voltage and constant current of the PMP40766 post-stage LLC

Hi，

     May I ask how to test the voltage loop and current loop of the post-stage LLC of PM40766 respectively? When I am testing the voltage loop now, I have soldered the components of the main circuit, the voltage loop and the overvoltage protection part. The components of the current loop are not soldered. During the test, I replaced D10 with a single-phase diode to connect the optocoupler and U7A. To stabilize U7, I soldered a 0-ohm resistor at the position of C33, making U7B a voltage follower. During no-load and load tests, the output is 0. After testing, the MOS tube has no drive. The RVCC pin voltage of UCC256403 is 13V, the VCC pin is 14.5V, and the BLK voltage is 3V, which are normal values. The BW pin voltage is 0V, and the FB pin voltage is 6.7V. I think the voltages of these two pins are not normal. I don't know how to solve it, and I hope your company can help me. Is there a problem with my testing method? If all the components are soldered, will there be any output voltage during no-load operation later? When a pure load is connected later, does only the voltage loop work? Please answer these questions for me.

Thanks.