Currently I am designing a Constant Current charger for a capacitor which charges it from 0 to 350 VDC using a peak current mode controller.
As we expected from simulation, I see there are sub-harmonic oscillations in reality at a duty cycle of 50% and higher.
But as I am charging the capacitor from 0V to the input voltage of 350V (D=100%) means the sub-harmonics occurs only for a short time and when it's charged I set the duty cycle to 100%.
Can I ignore/accept the sub-harmonic oscillations for a short period of time, or should I make a slope compensation to fix it?
Thank you for your time.