Component Analysis

Before reading this page, look at this article, which will help you better understand the insides of a PSU.



The 1350 W and 1650 W GF3 models use High Power's platforms, while the lower capacity units use CWT platforms. The High Power platform uses a similar design to the CWT one, utilizing a half-bridge topology, an LLC resonant converter on the primary side, a synchronous rectification scheme on the secondary side, and a pair of DC-DC converters for the minor rails. The half-bridge topology for such a strong PSU looks like a weird choice. Usually, a full-bridge is preferred for lower power losses, but with quality FETs, the cost goes through the roof since you have to use double the number of parts compared to the half-bridge topology. Overall, the build quality and the parts that High Power used are of exceptionally high quality.


The input filter is fully equipped and includes a discharge IC to restrict energy losses.


There is an MOV for protection against power surges. An NTC thermistor handles inrush currents with a bypass relay supporting it.


The pair of bridge rectifiers can handle up to 100 Amperes.


The APFC converter uses two Infineon FETs and a pair of boost diodes by CREE. The bulk caps are by Rubycon.


The APFC controller is an Infineon ICE3PCS01G.


The main FETs are installed in a half-bridge topology. An LLC resonant converter is also used for higher efficiency.


Ten FETs regulate the +12 V rail.


The VRMs handling the minor rails use eight Infineon FETs in total and a single PWM controller.


The electrolytic filtering caps are of high quality by Rubycon. Many FPCAP polymer caps are also used.


The standby PWM controller is an EM8569 IC.


The primary supervisor IC is a Weltrend WT7527RA.


The modular PCB has polymer caps installed for better ripple filtering.


Soldering quality is good.


The cooling fan uses a Hydraulic Bearing and it is strong, with 0.7 A max current output. Its controller is an STCmicro STC15W408AS.