Component Analysis

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



High Power provides the platform, and it does not look impressive, primarily because the modular board is connected to the main PCB through cables, of which there are many, increasing energy losses and blocking airflow. This technique is outdated. Despite the small PCB and increased capacity, the board is not densely populated, helping airflow. Lastly, the heatsinks are small, especially on the secondary side. All in all, High Power used quality parts, and soldering quality is good.


The transient filter starts on the AC receptacle, and its second part is on the main PCB. It does an excellent job.


Two metal oxide varistors (MOV) handle voltage surges, while an NTC thermistor suppresses large inrush currents. A bypass relay supports the latter.


The bridge rectifiers are bolted to the primary heatsink. Combined, they can handle up to 40 A of current.


The APFC converter uses two Infineon FETs and two CREE boost diodes. The bulk caps are by Rubycon and offer 1640uF combined capacity. They are rated for 3,000 h at 105 °C, so their quality is topnotch.


The APFC controller is an Infineon ICE3PCS01G.


The two main switching FETs are installed in a half-bridge topology, and an LLC resonant converter is used for higher efficiency. The resonant controller is a Champion CM6901X.


The main transformer lowering the voltage output of the primary side. It also provides electrical isolation between the primary and secondary sides.


The FETs that regulate the +12 V rail are installed on the solder side of the main PCB. Two heatsinks above keep operating temperatures under control.


The electrolytic filtering caps are of high quality, and the same goes for the polymer caps.


Two DC-DC converters generate the minor rails. They use five Infineon FETs, and the PWM controller is an ANPEC APW7159C.


This is the board holding the PFC controller and supervisor IC. The latter is a Weltrend WT2527RA.


The standby PWM controller is an SI8016HSP8 IC. The 5VSB rail is rectified through an MPVA04N65B FET and 45R15C SBR.


Twelve polymer caps at the face of the modular panel form an extra ripple-filtering layer.


Soldering quality is good.


The cooling fan is by Globe Fan, and its model number is RL4Z S1352512HH. The label mentions a fluid dynamic bearing, but the fan's model number indicates a sleeve bearing. We will take Globe Fan's word and mark it down as an FDB fan. An MCU is used to control the fan's speed.