Using this as an xbox psu?

[zeturi]

So instead of using an expensive as Heck pico psu, I have a ton of free TI regulators to burn on this. I want to regulate 12 down to 5v, and 3.3v. So I'll also need to use a pretty high amperage power brick for this, I'm hoping about 5 amps at 12v. Like this?
http://www.12vadapters.com/adapter/powe ... mp-5a.html

Here are some xbox psu pinouts. I have the top pinout on my box.
http://pinouts.ru/Game/xbox_power_pinout.shtml

Any noticeable problems? Improvements? Constructive criticism?

 

[Mako321]

what does the xbox psu output? all I know is that you input a Heck of a lot of power into it.

 

[zeturi]

It ain't as bad as a 360, but still a power hog. I gotta take a look see at the original psu specs.

 

[XCVG]

I don't think a PTH08080 will do the job, you'll need some more powerful cards. Also, you can't get away with 2.2K resistors for 3.3V. It has to be more accurate than that. I think so, anyway.

May I ask why? If it's to save money, a cheap computer PSU will work.

 

[zeturi]

No, it's because I have a ton of free regulators. Also, I probably wouldn't use a computer psu, because I want something really slim.

 

[βeta]

Run your regs in parallel for maximum amperage. You might need a bunch, but it will probably work.