Legit Power Supply Reviews
Seasonic Platinum 1000W Power Supply Review
|Date:||Mon, Jul 30, 2012 - 12:00 AM|
|Written By:||Emmanouil Filladitakis -|
A look inside
The cooling fan
Much like Seasonic heavily advertises, the fan responsible for the cooling of this unit is made by Sanyo Denki. The 9S1212F404 is a 2200RPM 120mm fan with a life expectancy of 40.000 hours.
Inside the Seasonic Platinum 1000W unit
It is a no-brainer that the OEM behind the Platinum 1000W unit is Seasonic, having designed, manufactured and now is marketing their product themselves. Despite the massive power output of this power supply, the heatsinks are minute and even then most are situated to cool the rectifiers, not the secondary side MOSFETs, testament to the exceptional efficiency one can expect from an 80Plus Platinum certified product. The primary DC line MOSFETs are soldered at the bottom of the PCB and are using the chassis of the unit as a large passive heatsink.
The filtering stage
The A/C receptacle is an EMI filter by itself but Seasonic was not satisfied with it alone and placed five more capacitors and two more filtering chokes onto the PCB. Therefore, the entire filtering stage now counts six Y capacitors, two X capacitors, four chokes and a MOV. While it does not really count as a filtering component, Seasonic also installed a relay which, alongside a thermistor, control the inrush current of the power supply.
Three Nippon Chemi-Con KMR 420V/330uF capacitors can be found at the primary side of this unit, each of them rated at 105°C. The small transformer is for the 5VSB line and the vertical PCB houses the PWM controller.
As we mentioned above, most significant parts of the secondary side of this unit, that is the MOSFETs, are situated at the bottom of the PCB. At the top side of the PCB one can see multiple capacitors, electrolytic and solid state alike, all of which are supplied by Nippon Chemi-Con.
The PCB which houses all of the modular connectors is also home to the voltage regulation circuit, which also integrates the DC to DC conversion modules. Thick wires feed the 12V line to the modular PCB, both for direct use to the left side of the PCB and on the VRM for conversion at the middle of the PCB.
Next Page - Test Setup
Page 1 - SeaSonic Platinum-1000 PSU
Page 2 - Unboxing the power supply
Page 3 - External Design
Page 4 - A look inside
Page 5 - Test Setup
Page 6 - Testing results (Regulation & Ripple)
Page 7 - Testing results (Efficiency, Noise & Thermal)
Page 8 - Seasonic Platinum 1000W PSU Conclusion