Wondering if anyone can help me out with the control of a Buck converter. Right now I have my ref voltage and output voltage being fed into a summing amp that will give me the error between the two, this error is being fed into a PI control, the PI control is being fed into another summer and then this summer is being fed into a comparator and am comparing this to a saw tooth wave form that will be the switching frequency,
Does anyone have a schematic of this control circuit so that I can compare what I am doing to something that has been tested and works,
Thanks Jeff Demmer