Quote:
Originally posted by dimmreaper
Awsome software Aidan! Thanx for posting that URL!
So like is there an internet resource that I can look the various component specs up with? I'd be able to set out and design a 1KVA ATX PSU then  |
Erm, unless I've misunderstood you, you want to design an ATX
PSU that can output 1KVA AC? :P
Perhaps 1KW worth of DC would be more useful? I'd recommend seperating the secondary supplies from the primary supplies unless you require serious output levels from the secondary supplies.
There's plenty of SMPS controller chips out there that'll do exactly what you ask. The most difficult part will be designing/winding the transformers for the sort of frequencies you're looking at using. Designs I've seen for homebrew high current SMPSUs generally have ended up using copper sheet to handle the current levels involved, rather than trying to use copper wire.
What I'd recommend doing would be designing a high current 5V switching regulator as a primary supply. The 5V regulator could feed into a 3.3V buck regulator for AGP/PCI cards, as the power levels will be much lower. The +12v, -12v and -5v lines can all come from a seperate switcher module as generally these lines are not such high power. The +12V would be a primary, and the -12v and -5v lines would be derived from the +12V line, as their loading is light.
This way, there is no interaction between the all important 5V and 3.3V lines and the auxillary 12V, -12V and -5V lines.
AidanII