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 better.


The OEM of this unit is Super Flower, a company that significantly increased its presence in the high-end PSU category with their platinum platforms. So far PC Power & Cooling trusted Seasonic with their top of the line units, but they decided to take a different road this time by giving Super Flower a shot and they, judging by the units we have seen from this OEM lately, made the right choice. Like all platinum Super Flower units, this one utilizes a half-bridge design along with an LLC resonant converter on the primary side, to boost efficiency, and synchronous rectification, along with two VRMs for the generation of the minor rails, on the secondary side.


Right behind the AC receptacle we find a small PCB housing one X and two Y caps along with a CM choke. The transient filtering stage continues on the main PCB with two X, two Y caps and another CM choke. Unfortunately, no MOV (Metal Oxide Varistor) is used, something common to all Super Flower platforms. Make sure to use this PSU along with a surge protector or a UPS.


The two parallel bridge rectifiers are bolted on the primary heatsink and their model number is US30KB80R. Each one can deliver up to 30A of current, easily able to handle the capacity of this unit.


In the APFC two Infineon IPW60R075CP fets chop the incoming rectified DC signal and, along with two boost diodes and the PFC transformer, generate a DC bus of around 380V. The two hold up caps are provided by Nippon Chemi-Con with the bigger one having 680 μF capacity while the smaller one has 560 μF capacity. The rest of their characteristics are the same (rated at 105°C, 400V, KMQ series).


Between the left-hold up cap and the PFC transformer resides the thermistor that protects the unit from large inrush currents, along with the relay that cuts it off the circuit once the main caps are fully charged.


The PFC controller, a NCP1653A IC, is housed on a small vertical daughter-board.


The primary choppers are two IPW60R075CP fets in a half-bridge topology. An LLC resonant converter is also used to boost the efficiency.


The standby PWM controller is an ICE3B0565 IC soldered on the component side of the main PCB.


On the secondary side synchronous rectification is utilized, and the +12V rail is generated using ten IPP041N04N fets. Considering that each one can handle up to 80A in continuous mode, ten of them are overkill for the "mere" 1.2 kW of this unit. Here we should note that the Super Flower Golden King 1000 W, which is based on this platform, uses the same fets (in quantity and model number) for the generation of +12V.


The minor rails are generated by two VRMs (Voltage Regulation Modules). Four mosfets, with a metal shield protecting them from EMI, are used on each VRM.


On the secondary side all filtering caps are Japanese (Chemi-Con). We also found some polymer caps, which have a much longer lifespan, next to electrolytic caps.


The protections of the unit, along with the role of the LLC resonant controller, is handled by a proprietary IC with model number SF29601. The same IC is used on all Super Flower Platinum platforms, but no information about it has been leaked. We don't know exactly which protection features it supports. On the solder side of this small PCB resides an LM324ADG Quad Operational Amplifier.


The front side of the modular panel looks quite impressive with nicely installed connectors and the small, filtering, electrolytic caps (Chemi-Con, 105°C, KY series). The modular panel actually consists of two PCBs with the first used for securing the modular connectors into their place, and the second housing all components.


Soldering quality on the main PCB is quite good and has clearly improved compared to previous Super Flower implementations we have seen in the past. It still isn't up to the levels of Delta, Flextronics, or Seasonic.


The fan is provided by Hong Hua (not Ong Hua). Its model number is HA1425M12B-Z (12V, 0.36A) and the fan-speed control unit keeps its RPMs low in almost all cases, ensuring low-noise output.