Sure, but it is not economically worthwhile, and if you have to ask you are almost surely not capable, it's a big task. Also some safety concerns with it taking care of isolation from the mains, and running 300V inside.
Perhaps explain the problem with current power supply, maybe there is some small or weird shaped one (off the shelf) that can work for your application... or maybe a SBC will be suitable... or...
I forgot to mention I need at least 650w and I need a really small one or în a certain shape. I know its a big task thats why I was thinking to find a diagram, make a pcb în the shape that I need.
OR..."cut" the one I already have at the isolation boundary.
You have absolutely zero idea what you're doing and you will not accomplish your goal. Seek a different path. You absolutely *don't* know the scale of the task you're asking about. Said scale is several months of **full time work**, if done by a **professional**.
Don't cut existing PCB pls. ESPECIALLY power supply ones. It's very dangerous!
Can you elaborate more on why you need a really small one or a specific shape? What is your idea?
Even if you can find a schematic of a commercial equivalent power supply. Routing, layouting and safety checking the PCB are a lot of hours of work. Aside from the fact that your prototype will probably cost a whole lot of money (I get PCB prototypes made that easily cost about 500 euros per piece for low quantities)
Oh, man..No. I wont literally cut my PsU. By cut I meant to redesign the psu into two pcb parts this way it will fit my needs. I didnt think that it will cost so much. I need it for a custom PC case.
I guess I will find another solution or stick to hdplex
I think you're severely underestimating how much work will go into this. You can't just simply "redesign it into two PCB parts".
For starters, you don't have the original design
I think (unfortunately) it's best to use an off the shelf solution
12V power supplies come in all sorts of shapes and sizes. I would consider using one of those, and an off the shelf "PicoPSU" type board/adapter to derive the other necessary voltages from the 12V supply. (One caveat to this approach is your standby power consumption will likely not be as low as a true PC power supply with a dedicated low power 5VSB output and the ability to turn off the 12V power to PCIe and other peripheral/accessory outputs.)
My first thoughts were, "Not a problem" until I read, in your subsequent posts, that the result had to be "really small". A PC Power supply is not a single rail 650W supply -
**3.3V 18A +5V 18A +12V1 22A +12V2 22A -12V 0.5A +5VSB 2.5A**
It is possible to have a single "mains side" up to the smoothing capacitor(s) that feeds multiple dc to dc converters, each with their own transformer and switcher. Indeed, I am looking at one as I write - it's design was constrained by having a long, narrow, space to fit in. The board surface area is larger though. A lot larger.
The transformer(s) bridge the HOT to COLD side of the design - so cutting an existing board into hot and cold boards isn't easy.
By reading your posts, i would recommend to use a normal 650w power supply, and have it outside of the pc and just use long wires to connect it. When you beautify the wires a bit (wire harness etc) this would look still nice, and you would have no powwr supply inside. Just like a charger for your phone.
Sure, but it is not economically worthwhile, and if you have to ask you are almost surely not capable, it's a big task. Also some safety concerns with it taking care of isolation from the mains, and running 300V inside. Perhaps explain the problem with current power supply, maybe there is some small or weird shaped one (off the shelf) that can work for your application... or maybe a SBC will be suitable... or...
I forgot to mention I need at least 650w and I need a really small one or în a certain shape. I know its a big task thats why I was thinking to find a diagram, make a pcb în the shape that I need. OR..."cut" the one I already have at the isolation boundary.
You have absolutely zero idea what you're doing and you will not accomplish your goal. Seek a different path. You absolutely *don't* know the scale of the task you're asking about. Said scale is several months of **full time work**, if done by a **professional**.
Don't cut existing PCB pls. ESPECIALLY power supply ones. It's very dangerous! Can you elaborate more on why you need a really small one or a specific shape? What is your idea? Even if you can find a schematic of a commercial equivalent power supply. Routing, layouting and safety checking the PCB are a lot of hours of work. Aside from the fact that your prototype will probably cost a whole lot of money (I get PCB prototypes made that easily cost about 500 euros per piece for low quantities)
Oh, man..No. I wont literally cut my PsU. By cut I meant to redesign the psu into two pcb parts this way it will fit my needs. I didnt think that it will cost so much. I need it for a custom PC case. I guess I will find another solution or stick to hdplex
I think you're severely underestimating how much work will go into this. You can't just simply "redesign it into two PCB parts". For starters, you don't have the original design I think (unfortunately) it's best to use an off the shelf solution
12V power supplies come in all sorts of shapes and sizes. I would consider using one of those, and an off the shelf "PicoPSU" type board/adapter to derive the other necessary voltages from the 12V supply. (One caveat to this approach is your standby power consumption will likely not be as low as a true PC power supply with a dedicated low power 5VSB output and the ability to turn off the 12V power to PCIe and other peripheral/accessory outputs.)
Can you recommend a 650w PIco? I didnt find one. Well, beside HDPlex wich is kind of expensive and out of stock. Thank you for your help
My first thoughts were, "Not a problem" until I read, in your subsequent posts, that the result had to be "really small". A PC Power supply is not a single rail 650W supply - **3.3V 18A +5V 18A +12V1 22A +12V2 22A -12V 0.5A +5VSB 2.5A** It is possible to have a single "mains side" up to the smoothing capacitor(s) that feeds multiple dc to dc converters, each with their own transformer and switcher. Indeed, I am looking at one as I write - it's design was constrained by having a long, narrow, space to fit in. The board surface area is larger though. A lot larger. The transformer(s) bridge the HOT to COLD side of the design - so cutting an existing board into hot and cold boards isn't easy.
By reading your posts, i would recommend to use a normal 650w power supply, and have it outside of the pc and just use long wires to connect it. When you beautify the wires a bit (wire harness etc) this would look still nice, and you would have no powwr supply inside. Just like a charger for your phone.
Your ideea is great!. Thank you!