A Look Inside
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This power supply has two PCBs. The first PCB contains the input filtering, bridge rectifiers and active PFC components. The other PCB contains the switching transistors, transformer, secondary rectifiers, and output filtering components. The AC receptacle contains the first part of the input filtering, with a self-contained input filter. These usually contain an X-cap, a coil, and two Y-Caps. The first PCB adds another two X-Caps, two coils, two Y-Caps and an MOV, which is more than enough components. There are two bridge rectifiers, rated at 15A each. The PFC sections contains two Infineon SPW20N60C3 MOSFETs rated at 20A, which are controlled by an Infineon ICE1PCS02 PFC controller. Another two SPW20N60C3 MOSFETs are used as the switching transistors, which are driven by an NCP5425 Buck controller. The two primary capacitors are Japanese, from Panasonic.
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The capacitors used on the secondary side are also Japanese. Most of them are made by Nippon Chemi-Con, but there are some Rubycons there as well. Both of these brands are very reliable, so this power supply should never have any problems with failed capacitors.
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The 12V rails share six STPS20H100CT schottky rectifiers, which are rated at 20A each, so combined, the four 12V rails are theoretically capable of up to 120A. The 5V and 3.3V rails use DC-DC conversion from the 12V rail, using STP60NF03L MOSFETs for each rail. These parts are capable of up to 60A, so these rails could also deliver up to 60A if the other components were up to the job. Unfortunately, I couldn’t identify the secondary monitoring IC, so I can’t confirm what protections it supports, but there are OCP shunts visible for all of the rails, so it’s a fair assumption that this controller supports OCP on up to four 12V rails.
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The soldering is generally very good, as I’ve come to expect from Hipro. All of the joints had an appropriate amount of solder, and there were no excess blobs. In fact, the soldering was so well done that I couldn’t remove any of the heat sinks, so to identify the parts, I had to remove the coils and other parts which were hiding them instead. My only complaint was a few component legs which could have been cut somewhat shorter.
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The fan used is a Nidec TA350DC series ball bearing model. At full speed, this model spins at 4000RPM and moves 62CFM of air with a noise output of 43.9dBA. It was very quiet with the power supply loaded below 600W, although it got quite loud during the overload test.
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