The MOST POWERFULL 12V PSU EVER...

[Johnny Bravo]

It will not be a switching PSU.....It'll be a "normal" one with huge heatsink and stuff like that.....I kinda like "old school" designs for myshelf.....I want builds to be huge and heavy.......

Linear design?!?! oucha thats gonna need some serious heatsinking when your pulling the amps

I suppose you can minimize losses with low voltage drop FETs and good PCB designs. Yeah this will be interesting mate.

[flavoraid]

hipro is nuts :P

[Pipi]

If this will be just for the cards, won't the PC fry if there's a voltage differwence between the cards and the mobo? or will it be for the wole system? But then you'd have to do thr 5 and 3.3 V too. I'm a bit lost here.

[Moonman]

If this will be just for the cards, won't the PC fry if there's a voltage differwence between the cards and the mobo? or will it be for the wole system? But then you'd have to do thr 5 and 3.3 V too. I'm a bit lost here.

With 'new' HW there won't be problems. I've run 7900GT SLI with their own PSU without any problems.
I believe that only X8xx series had problems with this. Pls correct me if I'm wrong.

It will not be a switching PSU.....It'll be a "normal" one with huge heatsink and stuff like that.....I kinda like "old school" designs for myshelf.....I want builds to be huge and heavy.......

Phase cooled maybe ?

[lalPOOO]

Good idea George!
Plus, this way you won't need to build a bigger one for a couple years

[hipro5]

Good idea George!
Plus, this way you won't need to build a bigger one for a couple years

Indeed.....

Phase cooled maybe ?

Not a bad idea...!....

If this will be just for the cards, won't the PC fry if there's a voltage differwence between the cards and the mobo? or will it be for the wole system? But then you'd have to do thr 5 and 3.3 V too. I'm a bit lost here.

Nowadays VGAs have another design and they are not burned down if you feed them with external Voltage

Hipro Like How Mach Is Be Cost

Don't know yet.......
Toroidal transformer has cost me 115 Euros, Heatsink another 50 Euros, Now I'll cost the Mos-Fets and all the other parts (box, etc.).....


EDIT: Now that I'm thinking some things, I wonder if it would be convinient to build in AND the 3.3V, 5V, -12V rails so as to be a "full" computer PSU......About a 2KW one...!.......

[SLi_dog]

EDIT: Now that I'm thinking some things, I wonder if it would be convinient to build in AND the 3.3V, 5V, -12V rails so as to be a "full" computer PSU......About a 2KW one...!.......

lol, go for it Hipro. If a job's worth doing it's worth doing well.

2KW would be seriously cool

[Johnny Bravo]

EDIT: Now that I'm thinking some things, I wonder if it would be convinient to build in AND the 3.3V, 5V, -12V rails so as to be a "full" computer PSU......About a 2KW one...!.......

Raisng the bar before you've even begun, I like it. If your gonna go for a full blown PSU then it would probably be best to go modular on the big ones you have already mentioned -

12V
+5V
3.3V

But there are other ones to consider too:

-5V
+5VSB
-12V

To the best of my knowledge these arn't high current lines, the +5VSB is designed to draw about an amp (depending on how may things you have on standby on your PC, not many I think George ). The other two are the same, -5V is nothing at all and -12V is again 1-2amps. These supplies could be made on one singular board as the power requirements are not too high.


Finally the logic of the PSU

PWR-ON
PWR-OK

Those these arn't so tough, PWR-ON is just a internal switch and PWR-OK is a signal sent to the mobo when the PSU has checked all the rails are in spec.

It is achievable more so because you don't have to work within the constraints of a ATX PSU box dimensions. In many ways it reminds me of a good A class linear amp design and how important the PSU side of that was. Could be a good place to look for ideas on circuit design.