Server cheap power supply transformation standard atx plan-1U power supply-atx power conversion circuit

Use apw7159 as the pwm controller, apm3109 (50a) as the upper bridge, and apm3106 (60a) as the lower bridge, providing a load capacity of 30a (currently using a closed inductor with a current carrying capacity of 18a, it can be replaced with an iron-silicon-aluminum winding inductor )

As a 5vsb conversion, xl4015 has high efficiency and strong stability.

WT7510 generates pson and pg signals to meet the atx startup conditions. You can also use reserved jumpers to directly connect to ground. The pg and pson signals are connected to 5v through resistors to start directly, saving a chip. You can also connect the server's pson to the atx-24pin pson, but some motherboards may choose the voltage and may not start, but most of them can.

There are many fake wt7510 products now. To save trouble, you can fly the cable.

The slot board is in another project, https://oshwhub.com/zhao1999250/12vo-atx_copy_copy_copy

There are regular 6 8pins (cpu/pcie) and 2 hard drives with 5pin.

There are also 6 5pin and two 8pin versions, https://oshwhub.com/zhao1999250/12vo-atx_copy_copy_copy_copy_copy_copy_copy

Suitable for nas and chia mines (if you dare to use it). I don’t dare to increase the density very high, mainly because I am afraid that the wire cannot be pulled out. The lines are all Great Wall Mining Dragon module lines. You can buy them from a certain fish. If you need more adjustments by yourself, you can

There is enough capacitance left, there are three 2200uf for 5v and 3.3v, one set of 1nf and 100nf. Just choose to solder. If you have obsessive-compulsive disorder, you can solder all the capacitors to get the best ripple performance. It is best to solder more than two. The ripple of the 12v server power supply should not be bad, but to be on the safe side, four groups of 2200uf and four groups of 1nf and 100nf are left. You can choose to solder it. It is not impossible to not solder one of them. The input capacitor is a 470uf solid capacitor and two 1uf ceramics. Capacitor, two 10uf electrolytic capacitors, electrolytic capacitors do not need to be soldered, other requirements

5vsb has a 470uf solid-state input capacitor and two output capacitors of the same style, so you can solder one less output capacitor.

It is recommended to watch the video. Use copper wire or copper wire to solder the back of the interface to the back of the slot plate. Weld the left one to the left and the right to the right. You will understand after watching the video https://www.bilibili.com/video /BV1if4y1s7dA/