A Look Inside

Before reading this page we strongly suggest to take a look at this article, which will help you understand the internal components of a PSU much better.

The OEM (Original Equipment Manufacturer) is Channel Well Technology but we are pretty sure that Corsair significantly contributed to the final design with their requirements and suggestions. Here we should note that the same OEM was also behind the legendary HX1000W, which utilized CWT's PUC design (in this design, very simplified, two independent PSUs co-existed into the same casing).


The PCB is not densely populated and as you can see the heatsinks are very small, especially for a 1050W PSU.


We find some parts of the transient filtering stage at the AC receptacle: one X and two Y caps. On the main PCB there are also two coils, one X and two Y caps and an MOV.


The two bridge rectifiers are sandwiched between three heatsinks. In the APFC there are two mosfets along with two boost diodes (CRE CSD06060). The two parallel smoothing/reservoir capacitors are provided by Panasonic (105°C, 450 V, 470 μF each or 940 μF combined). As primary switches two SPW35N60C3 mosfets are used. Very close to the primary switches resides the thermistor that offers protection against inrush current and a relay that bypasses it once it finishes its job. On the primary heatsink we also find an STF3NK80Z, which regulates 5VSB.


The combo PFC/PWM controller is the famous CM6800. It is located on a vertical daughter-board right next to the APFC choke.


In the secondary side synchronous design is used and seven IPP037N08N mosfets regulate +12V. The minor rails are generated from +12V utilizing two DC-DC voltage regulation modules. At each VRM there are four IPD060N03L mosfets. All capacitors on the secondary side are provided by Nippon Chemi-Con (rated at 105°C) and besides electrolytics we also find some polymers.


All protections are handled by a SiTI PS229 IC.


On the front of the modular PCB there are some small polymer caps that reduce ripple current at the DC outputs. Soldering quality on the same PCB is quite good.


On the main PCB the overall soldering quality is good. However in some areas we find several hand made, low quality joints.


The cooling fan is provided by Yate Loon Electronics and its model number is D14BH-12 (12V, 0.7A, 2800RPM, 140CFM, 48.5dBA).