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N64 freak

Atx Psu To XBox Adapter

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Finally found the time to test the Adapter PCBs i built to use an ATX Psu to power an Xbox.

They are plug and play to easily switch between the original psu and an atx-psu.Might be usable for casemods or laptop builds.

The adapter is built around the following basic schematic.

AXTToXboxPowerSupplyConverterBoard.jpg.7c0aeec4c1b3e5ea093af341ac640fb4.jpg

 

It properly convert the Standby voltage from 5v to 3,3v and also shifts the power_ok and power_good signals to the correct levels.

Also built a small version that can be used to build an extension cord style adapter to save some more space.

Just let me know if you have any questions about them :)

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Just an hobbyist who likes the xbox :)

The infos for the atx adapter have been around for quite some time! Sickmods once sold similar adapters but there shop is closed so i couldn't buy one. 

Inspired by there design i drew up the shematic and layout around parts i already had here.

 

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@Crazyembereks If you want one just PM me! They are for sale just haven't posted them in my for sale section. You just need to let me know which revision xbox you got!

This Adapter and the Xbox in general isn't too picky about the ATX PSU as the xbox doesn't draw more power than any pc. Any ATX PSU even the smaller ones for office PCs should be sufficient.

The minimum specs are: (Taken from a 240v V1.4 Foxlink PSU)

96Watt power output

+5V with a rating off 13.2A

+12V with a rating off 1.2A

+3.3V with a rating off 4.8A

+3.3VSB with a rating off 0.045A

 

If you are unsure if your PSU is sufficent just let me know the brand and model so i can take a look at it!

For the 3.3vsb you are looking at 5Vsb on the ATX psu the adapter does do the conversion to a 3.3Vsb voltage! So don't get confused you won't find 3.3vsb on an ATX PSU :)

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You can use some Zenner diodes converting from 5 to 3v3. Not so efficient but it works just fine.

Edited by daniel
English can be hard

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@daniel Yes it gets the job done. BUT have you ever heard of something called bad engineering?

Diodes aren't the way to reduce the voltage. Yes the do drop the voltage about the same amount you would need but they don't allways have a guaranteed voltage drop and can differ form one to another diode. If you already build this up why not do it the correct way?

@All if you build up such an adapter please don't go the cheapo route and use diodes. This simply is not a good way to do it even if it works.

@Michael McBride Yes this adapter can be used in combination with a PicoPSU or any other ATX PSU.

But one thing about the Pico PSUs. and other psus. Check how many amps the PSU can supply. The PicoPsus are a bit weak on the 5v rail for the xbox!

Other than that plug in the adpter and an ATX psu and it works just like the retail psu.

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As i said sir., not very efficient.  I assume one does test the voltage before using this..

I put this here as an option. Sometimes we dont find/have the components we need.

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On 12/25/2017 at 7:23 AM, cOrPsE said:

def would be awesome for putting an xbox into a pc case, nice work

xbox motherboard in a pc case you say. BAM...

fTWsWlp.jpg

N64 Freak Got your adapters yesterday. I'm putting them together today. They're gonna go in my two xbox PCs.

HINT: Anyone wanting to put a xbox motherboard in a PC Case to: make the job easy you need to:

1. Make a MicroATX size (244mm x 244mm) adapter Plate that has both the PC motherboard standoff holes and the xbox motherboard standoff holes.

2. Position the Ethernet port directly behind the 2nd PCI slot down.

I'm currently doing up a build log over on imgur you can find it Please login or register to see this link. ..

Edited by finalman
addition
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This is an exciting project, and I have wanted to build an Xbox PC, but outside of an X-tender, how would I be able to swit h between 3 hard drives?

Sent from my SM-G955U using Tapatalk

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On 1/5/2018 at 12:51 PM, cOrPsE said:

thats a really nice heatsink as well

Actually it is the fan shroud you are seeing. I'm currently doing up a build log over on imgur you can find it Please login or register to see this link. ..

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3 minutes ago, finalman said:

Actually it is the fan shroud you are seeing. I'm currently doing up a build log over on imgur you can find it Please login or register to see this link. ..

ah ok so the heatsinks are mounted normally, but you have a beast fan shroud. nice

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On 01.08.2017 at 11:48 AM, N64 freak said:

Наконец, нашли время протестировать платы адаптера, которые я построил для использования ATX Psu для питания Xbox.

 

Они подключаются и воспроизводятся, чтобы легко переключаться между оригинальным psu и atx-psu. Могут использоваться для сборки casemods или ноутбуков.

 

Адаптер построен вокруг следующей базовой схемы.

 

 

Please login or register to see this link.

 

 

Он правильно преобразует напряжение в режиме ожидания от 5 В до 3,3 В, а также переключает сигналы power_ok и power_good на правильные уровни.

 

Также построена небольшая версия, которая может быть использована для создания адаптера стиля удлинителя, чтобы сэкономить больше места.

Просто дайте мне знать, если у вас есть вопросы о них :)

 

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Hello! great work.
Can you share the layouts of the boards?

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On 09.02.2018 at 12:18 PM, N64 freak said:

Привет @ Борис Высоцкий ,

если вы хотите, чтобы пара с этих адаптеров или голые доски просто бросила мне PM.

Shematic для них находится в первом посте, поэтому вы можете легко создать свой собственный макет.

I was trying to create my own layout. and failed

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On 09.02.2018 at 12:18 PM, N64 freak said:

Привет @ Борис Высоцкий ,

если вы хотите, чтобы пара с этих адаптеров или голые доски просто бросила мне PM.

Shematic для них находится в первом посте, поэтому вы можете легко создать свой собственный макет.

I need a list of components
and method of connection (I do not understand how to connect the power supply to the board and Xbox, I'm afraid to burn Xbox) (there are photos of ready-made examples)
Did I draw the board correctly?
I apologize for the translation of the text (translate.google.)


777.thumb.JPG.35a52eeed971524cb4f163987b78827a.JPG

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Board Life Status


Board startup date: April 23, 2017 12:45:48
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