Component Analysis

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This new HEC platform was created under be quiet!'s guidance. The heatsinks are large for higher heat dissipation and lower noise output. Airflow is also positively affected by the increased space between parts on the PCB, which is large enough. Moreover, soldering quality is good, but I disagree with the choice of caps on the secondary side. I would like to see higher-quality caps than the mainstream Teapo ones HEC installed. The more expensive RM1000x only uses Japanese caps, along with a magnetic levitation fan, which is why its warranty is double that of the Pure Power 11 FM 1000 W.


The transient filter starts on the AC receptacle and continues on the main PCB.


A Metal Oxide Varistor (MOV) handles voltage surges.


An NTC thermistor suppresses large inrush currents. A bypass relay supports it.


The bridge rectifiers can handle up to 30 A of current combined.


The APFC converter uses three Infineon FETs and a CREE boost diode. The bulk caps are by Teapo and offer 940 uF combined capacity. They are rated for 2,000 hours at 105°C, so they are good on paper. Still, I would like to see Japanese caps used for this stage, and others.


The APFC controller is a Champion CM6500UNX. It is supported by a CM03AX IC for lower vampire power.


The two On Semiconductor primary switching FETs are installed in a half-bridge topology, and an LLC resonant converter is used for higher efficiency.


The LLC resonant controller is a Champion CM6901T6X.


The main transformer is next to the resonant tank and capacitive parts of the LLC resonant converter.


Six Nexperia FETs regulate the +12 V rail. They are installed on the solder side of the main PCB. Three heatsinks above these keep operating temperatures under control.


Still, I would like to see higher-quality electrolytic caps instead of the mainstream Teapo SC ones. Many polymer caps are also used.


Two DC-DC converters generate the minor rails.


The standby PWM controller is an EM8569D. The rectifier on the low side is an SMPD1060L SBR.


The supervisor controller is a Weltrend WT7527RT.


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


Soldering quality is good.


The cooling fan is by be quiet!, and its model number is QF2-12025-HS. It uses a rifle bearing, which will last for quite a while. This is the same fan as in the FM 850 model.