Hey There!
I have now spent more than a week of my free time to get into buck converters and stepping down DC voltage. I now know how they reduce the voltage, but it is not clear what controls the
MOSFET, what decides when it turns on and when off.
I started doing this because I need a DC power supply, which ideally is adjustable (2-12V) and can handle 500 W or even more.
I have fixed 48V 30A power supply (if it is easier to convert from 48VDC than 230VAC). I have quite high power MOSFETs, diodes, bridge rectifiers, capacitors, inductors and other stuff, what can be salvaged from DC supply. Can such buck converter be made by beginner? Voltage does not have to be smooth, very constant or precise, so there is no need for complex smoothing circuitry.
Can voltage be adjusted without complex controllers?
Thanks, sorry for lack of some basics, but i can't sleep at night if I won't resolve this.
Also - English is not my main language, so it was not easy to say what I need to get done, I might sound more stupid then I am!
Thanks!