A Look Inside & Component Analysis

Before reading this page, we strongly suggest a look at this article, which will help you understand the internal components of a PSU much better. Our main tool for the disassembly of the PSU is a Thermaltronics TMT-9000S soldering and rework station. It is of extreme quality and is equipped with a matching de-soldering gun. We use an Andonstar HDMI Digital Microscope to identify the tiny parts.


This platform is quite old since it uses the Champion CM6800TX, a PFC/PWM controller that used to be very popular several years ago, one most 80 PLUS Bronze units utilized. Sirfa managed to pull Platinum efficiency out of this platform, which is quite a feat given the outdated switching controller. A double-forward topology is used in the primary side, while a synchronous rectification design for the +12V rail is used in the secondary side. Finally, the minor rails are generated by a couple DC-DC converters that are installed on the modular board for restricted power losses.

Kolink used nothing but Japanese caps, which is a very good sign for the unit's reliability over the long run. Japanese caps, especially the electrolytic ones, use higher-quality materials, which has them age much slower than their Chinese and Taiwanese counterparts. There is unfortunately no NTC thermistor or bypass relay for inrush-current protection, which is a great shame.


The first part of the transient filer on the AC receptacle includes two Y caps, a single X cap, and a CM02X IC that isolates the bleeding resistors once mains voltage is applied. The second part of the same filter consists of two CM chokes, two Y and a X caps, and a rather well-hidden MOV.


Two GBJ2506 bridge rectifiers are installed on a dedicated heatsink. These fully rectify the incoming AC voltage, and as per usual, a capacitor is installed at the APFC's input to filter the high frequency ripple.


In the APFC converter, three Infineon SPW35N60C3 FETs are used, along with two CREE C3D10060A boost diodes. The bulk caps are a pair of Rubycons with a combined capacity of 940 uF, which is pretty low for this PSU's needs.


The primary switching FETs are two Infineon IPW60R099C FETs configured in a double-forward topology.


The combo PFC/PWM controller is a Champion CM6800TX IC, which is a very outdated choice that is apparently still capable of offering high efficiency. On the same board is a CM03X IC that will drop the power consumption in standby mode to quite low levels.


Two heatsinks in the secondary side hold a total of ten Infineon IPP020N06N FETs which handle the regulation of the +12V rail.


All electrolytic filtering caps are provided by Chemi-Con and belong to the KZE, W, and KY lines. Some polymer caps are used as well, on the main PCB. These are provided by the same manufacturer.


Both VRMs are installed on the modular board. There are a total of eight Infineon IPD060N03L G FETs, and the common PWM controller is an Anpec APW7159 IC.


The modular board not only hosts the VRMs but a number of polymer caps for some extra ripple filtering. Some of these are obviously used by the VRMs. The quality of these caps is high since they are provided by Chemi-Con and FPCAP. On the solder side of the same board are a number of SMD caps.


The lower modular sockets are directly connected to the main PCB, which reduces energy losses.


The standby PWM controller is a TOPSwitch-JX TOP256EN IC, and the 5VSB rail is regulated by a PFR30L45CT SBR. We also found a 40N03GP SBR on the main PCB.


The supervisor IC is a SITI PS223, which supports OTP, though its OTP protection isn't implemented. There is also a UTC LM393G on the solder side of the mainboard, there to probably support the supervisor IC.


Soldering quality is decent, and we find several with copper wires enhanced PCB traces.


The cooling fan is made by Globe Fan, and its model number is RL4Z B1352512H (135 mm, 12 V, 0.33 A, DBB). It uses blades with a "golf-ball" style treated surface, and its actual diameter is 135 mm, not the 140 mm listed on the product's page.