Re: Buck converter with SG3524 and IR2117, problem with duty
It was this bootstrap problem and I dealt with it.
But there is a new prob now.
I have to connect a PI controller in my circuit to keep the output voltage equal to 5 volts. I have passed the output (of the buck converter, which is supposed to be 5 Volts, after scaling it down) to the positive output of the comparator of SG3524. The negative input of comparator is output of PI controller and PI controller's input is the output of comparator. I know this sounds confusing. If you ppl need the schematic, I will upload it next time. I have used LM324N for PI controller. The prob that I see is, "P" controller works alone fine. "I" controller works alone fine. I.e. if they are broken in to parts and connect them , they individually work fine. But when I short the input and output of "P" and "I" controller, the output no more remains as expected. Why dont the "P" and "I" work together properly?
Also when I use "P" and "I", I use the same IC for both.
Thanks in advance.