A Look Inside

The first hint for a high Quality PSU we can see already when we take a first look at it. At this point we get a nice design and high quality case.

Right at the input there is an X capacitor. On the main PCB the transient filtering stage continues with two X, four Y, two CM chokes, two MOV (Metal-Oxid-Varistor) and a TVS. Additionally there is an NTC thermistor for inrush current limitation. A mechanical relay shorts the NTC thermistor for normal operation. The transient filtering stage is well done.

Two U30K80R (800V, 8A) are used for rectification. The PFC booster consists of three IPP50R140P mosfets (550V, 0.14Ohm, 23A) and two C3D06060 (600V, 6A, Qc 16nC) SiC Schottky diodes. The APFC is controlled by an NCP1653A from ON Semiconductor. The NCP1653A has a Gate driver performance of 1.5A. This PSU has two APFC capacitors from Nippon Chemi-Con (KMQ series; 560uF and 470uF, 400V, 105C). The total capacitance of 1030uF is very competitive for a 1000W PSU. Four IPP50R199CP (550V, 0.199Ohm, 17 A) mosfets are used on the primary side of the LLC resonance converter, which is controlled by an ASIC with the name AA9013. The good input filtering and the usage of over 1000uF of extremely high end Nippon Chemi-Con capacitors together with thick litz wire in the APFC Choke and the Main Transformer are very nice to see. The primary side of this PSU is solid.

On the secondary side 4 IPP041N04N (40V, 4.1mOhm, 80A) and 4 IPP023N04N (40V, 2.3mOhm, 90A) mosfets do the 12V rectification. These mosfets are directly cooled via 2 heatsinks. The design of the secondary side is solid. 3.3 and 5V are generated from 12V using DC-DC converter. Those are located on two Daughter PCBs. The DC filtering is done using Nippon Chemi-Con capacitors. Those are extremely high end. The connection of the main PCB to the connector PCB is well done. The connector PCB has some additional capacitors from Capxon which are non Japanese. This does not comply with the advertised statement "100% Japanese Capacitors".

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Page 1 - Introductiont]

Page 2 - Preview

Page 3 - Delivery / Specs

Page 4 - A Look Inside

Page 5 - Input/Output Power and Efficiency

Page 6 - Result Analysis and Discussion

Page 7 - Conclusion