Component Analysis

Before reading this page, we strongly suggest looking at this article, which will help you better understand the insides of a PSU.



The platform looks nice. The heatsink leaning on the bridge rectifiers is not Cougar's fault. I did it to identify the bridge rectifier model numbers and forgot to straighten it out before I took the photos. Build quality is high, and the large PCB helps with airflow. The OEM used a full-bridge topology and an LLC resonant converter on the primary side. We meet a synchronous rectification scheme for +12 V and a pair of DC-DC converters for the minor rails on the secondary side.


The transient filter has all necessary components, including an MOV.


The NTC thermistor protects against large inrush currents and is supported by a bypass relay.


The two bridge rectifiers can handle up to 30 A combined.


The APFC converter uses two 65R078W FETs and a single G3S06510A boost diode. The bulk caps are by Chemi-Con, and their combined capacity is 1120 uF.


The APFC controller is a Champion CM6500UNX.


The four NCE Power primary switching FETs are installed in a full-bridge topology.


The resonant controller is a Champion CM6901T6X.


The main transformer is next to the parts for the LLC resonant controller.


Eight Infineon FETs regulate the +12 V rail. They are installed on the solder side of the PCB.


The electrolytic caps on the secondary side are by Nippon Chemi-Con, and most of them belong to the high-end KY line. Many polymer caps are also used for ripple-filtering purposes.


Two DC-DC converters generate the minor rails.


The standby PWM controller is an EM8569C IC, and one of the 5VSB rectifiers is a 60R10S SBR.


The supervisor controller is an IN1S4241-SDG.


Several polymer and electrolytic caps installed on the main PCB reduce ripple further.


Soldering quality is good!


We usually find a Hong Hua fan on mid and high-end units, but the OEM chose DWPH. According to specifications, the fan uses a hydraulic dynamic bearing, so I expect it to be good.