Tool/software:
Dears,
The schematic diagram is as follows. The LM5069 at the bottom is only used for redundancy purposes and is not enabled under normal circumstances. It is only used for the LM5069 above;
Current test situation: Under no-load output conditions, after adding a 3.3V level control signal to ULVO for a short period of time, switching to VIN 24V power supply results in no output from the Gate pin. Adding a 700Ω resistive load to the back end results in normal output. When the load is greater than 1KΩ resistors, there is no output. Currently, we do not know the reason for this. After removing the level control signal, the output is normal. Does adding a level control signal to the ULVO pin affect the chip's operation? Is it related to the load? Our design requirement is to turn off the power supply by using a level signal control at the ULVO pin when there is an abnormal load on the back end. We look forward to your answer. Thank you
