We find the output current oscillation at output start-up. The waveform is shown in below.
The schematic shows in below, HOT Swap MOSFET: STB120NF10, Output CAP=680uF
Do you have any advice? Thanks.
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
We find the output current oscillation at output start-up. The waveform is shown in below.
The schematic shows in below, HOT Swap MOSFET: STB120NF10, Output CAP=680uF
Do you have any advice? Thanks.
Hi Gary,
The current design has a C11 capacitor of 1uF. This will significantly slow down the GATE rise time and could be causing this instability issue.
We would recommend trying to start up with C11 depopulated, or a significantly lower value (like 2.2nF - 4.7nF) used.
Thanks!
Alex