- Ask a related questionWhat is a related question?A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
Hello all,
Vin=50V，Vout=24V
First normal start, about 1-2s once repeated switch unable to start. At this time, the input voltage drops to about 26V.
Schematic：
Waveform：
Yellow channel output voltage
Blue channel input voltage
The green channel is driven by the lower tube. When the input voltage drops to about 26V, it will be powered on again, and it will not work.
When it not work, re-power on, measure UVLO voltage about 2.3V, VCC 7.4V, SS 4.7V or so
What could be the cause of this?
