A Look Inside

The first hint that this is a high quality PSU comes from the first look inside the unit due to its exceptional design and a quality chassis. Right at the Input there is a YO15T1 (250V, 15A, CX = 0.1uF, CY= 3300pF*2, Common Mode (CM choke) = 2*0.3uH) from Yunpen Electronic. At the PCB the transient filtering stage continues with two X, four Y, a CM and DM chokes as well as four MOVs (Metal-Oxid-Varistor). Additionally there is an NTC Thermistor for inrush current limitation. A mechanical relays shorts the NTC Thermistor for normal operation. The transient filtering stage is well done and we certainly have not seen many PSUs with such an extensive input filtering.

Two GBJ 2506 (25A) are used for rectification. The PFC Booster consists of two IPB60R125CP Mosfets (650V, 0.125Ohm, 25A) and one SCS110AG (600V, 10A, Qc 16nC) SiC Schottky Diode. The APFC is controlled by the NCP1654 (54B65) from ON Semiconductor. The NCP1654 has a gate driver performance of 1.5A. This PSU has two APFC capacitors from Nippon Chemi-Con (KMR series; 390uF, 420V, 105C each). Four IPP60R199CP (650V, 0.199Ohm, 16 A) Mosfets are used on the primary side of the LLC resonance converter. The LLC resonance converter is controlled by a CM6901. The primary side of this PSU is rock solid, especially the costly transient filtering stage and the high end Japanese Nippon Chemi-Con Capacitors are excellent.



On the secondary side four BSC018N04LS (40V, 1.8mOhm, 100A) MOSFETs do the 12V rectification. Those MOSFETs are definitely high quality ones.



What we definitely appreciate is the fact that be quiet! makes heavy use of the high end Japanese Nippon Chemi-Con capacitors on the secondary side. In fact all capacitors we see are from Nippon Chemi-Con with a 105°C rating. The Dark Power Pro 10 can be considered as an extremely high-end PSU and we certainly congratulate be quiet! on it.

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Page 1 - Presentation

Page 2 - Photo Gallery

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