Well there has got to be an easier way to get from Diptrace schematic to jpeg, or gif or something that will show up in attachments. Printed to pdf which comes out decent. Tried converting to jpeg, and it was terrible looking! Tired of messing with schematic stuff.
Anyway, here is the basic setup on the buck converter. The input will soon be a solar panel rated at 17V, 4.4A, and the output load a 12V RV battery. Using a power supply and car tail light for the time being.
The circuit seems comfortable at 34khz, as higher frequencies reduce the desired output voltage. That's the weird part, as I wouldn't think frequency would have anything to do with Vout. My impression was that the duty cycle would drive the Vout, not frequency. Any suggestions for improvements or things to try? Kind of stuck with the inductor at the moment, but will be ordering more parts soon if given direction.
EDIT:found the preview/save as/jpg for diptrace, still bad
EDIT2: ok finally got a half decent picture by upping scale factor
deleted crummy jpegs.