Now I use LM5121 for boost input from 10.5V - 14.5V to output 24V Pout 200W and i set OCP Point by RSENSE Current = 3mohm.
but i found gate drive dissconnect switch input MOSFET cannot turn off. when converter shut down OCP affect to input voltage bypass to output.
and i have improved this issue by add Inrush Current Limit Programming #2 (R_Inrush = 10Kohm). I have some question about this circuit as below.
1. Resistor bias transistor is RSLOPE? (Original i use RSLOPE = 100Kohm connect to GND @ freq 150KHz ).
2. How to calculate Resistor bias transistor?
Best regards
Watchaphong
