Tool/software:
Hi expert,
My customer found the output voltage can't stable and dropping slowly with OCP fault, but the current is lower than 10A. Below is the schematic:
The voltage of pins:
Pin1: 2V
Pin2: 10V
CS+, CS-: 8V, which is dropped slowly when MOS opened
FLT_I: low level
FLT_T: High level
Below is the waveform of pins: Yellow-- PU, Blue -- BST, Red-- PD, Green-- Input
In below waveform, Vin=12V, Vout= 3.12V, and then drop. The max Iout= 4.26A, FLT_I is low level.
Now I want to confirm 2 questions:
1. Are there errors in the schematic?
2. It seems OCP always enabled. I don't know why because the current is lower than 20A. Do you have any insight to solve the problem?
BR,
Moon
