Disassembly
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This power supply is based on the CWT DSA platform – the same platform the Corsair CX430 and Enermax NAXN series are based off. The input filtering consists of two X-Capacitors, two coils, four Y-Capacitors, and one MOV (which is hidden by glue). This is more than enough components for the job. The bridge rectifier used is a 10A. There’s no point in going any higher than that here in Australia, as outlets are only rated for that. The PFC section uses two STP14NK50ZFP MOSFETs rated at 14A and a 330µF Capacitor from Samxon. The switching transistors are two more STP14NK50ZFPs in two transistor forward topology. The Primary side is controlled by a Champion Micro CM6800 PFC/PWM controller combo IC.
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Most of the secondary capacitors are Teapo brand, but one of the 5vsb capacitors and both 12V capacitors are Samxon. Unfortunately, they are from Samxon’s infamous GF series – one of their more unreliable series. They aren’t quite as bad as the likes of Fuhjyyu and Sacon, but it could still be a concern for the long term reliability.
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The 12V uses two Diodes Inc. SBR30A60CT Schottky rectifiers rated at 30A, so the rail should be good for up to 60A. The 5V rail uses a 30A STPS30L30CT Schottky rectifier, and the 3.3V rail uses the popular STPS3045CW rectifier, also rated at 30A, so both of these rails should be capable of 30A. The secondary side is monitored by a Silicon Touch PS229 IC. It supports Over and Under Voltage protections, as well as Over Current Protection on up to two 12V rails.
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The soldering isn’t too bad. The wires are a little messy, but I’ve seen much worse. At least I couldn’t spot any long legs which were nearly shorting on other joints.
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The fan is made by Yate Loon. This is a sleeve bearing model with speed, noise and airflow ratings of 2200RPM, 40dB and 88CFM respectively. Removing the sticker and plug revealed that there was sufficient oil in the bearings. It first became audible with the power supply loaded to about 250W. The heat sinks are about right for an efficient 400W unit.
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