Hi,
I've got problem with a Sepic schematic based on LM3481.
Schematic :
Input : Vbat-Pro 9-30Vdc
Output : 12V / 30mA
Current on MOS is pulse bursts 1A.
Simulation with TINA give 200mA max pic current.
Tests :
C16 : from 4.7µF to 1µF => current increase, board is noisy
R12 : from 0.33 to 1 ohms => no effect, current must normally decrease
C14 : from 56pF to 470pF => no effect
What is the problem with this schematic ? A component value may be anormaly low or high.
Can someone help me ?
Regards,
Aymeric
