huojinsi
Full Member level 5
uc3842 buck
Hi all:
I am studying how to operate regarding current mode control in buck switch power. I have some questions that cann't be understanded.
Question 1. From some papers, i know the inductor current is independent of duty cycle,so i cann't understand "how to vary about duty cycle? what is the result of duty cycle varying?"
Question 2. in current mode,i know the inductor average current is constant by slope compensation. But i cann't understand the inductor peak current is constant or not, what relation is the inductor peak current with duty cycle?
Pls help me explain.Thanks in advance!
Hi all:
I am studying how to operate regarding current mode control in buck switch power. I have some questions that cann't be understanded.
Question 1. From some papers, i know the inductor current is independent of duty cycle,so i cann't understand "how to vary about duty cycle? what is the result of duty cycle varying?"
Question 2. in current mode,i know the inductor average current is constant by slope compensation. But i cann't understand the inductor peak current is constant or not, what relation is the inductor peak current with duty cycle?
Pls help me explain.Thanks in advance!