Reviews - Corsair AX1200 1200W
Sample Provided by: Corsair (By OklahomaWolf on Sat, Jun-05-2010)

Page 4 -

Yate Loon is our fan of the moment.

Well, now - that's certainly a different looking unit, isn't it? You say you don't recognize the layout as either Seasonic or CWT, like the rest of Corsair's units? That could be due to the fact that Corsair went to a new OEM on this one, Flextronics. And I'm just going to 'fess up right now - I am not desoldering all that stuff in there. Much of the electronics should be identifiable using clever camera angles and a lot of hard squinting.

This unit comes with a line filtered AC receptacle, the way many high grade server units do. These incorporate many of the parts found in the usual AC transient filter into one little box along with the receptacle itself.

The soldering on this unit is very high quality, among the best I've seen.

This is the PWM controller for the unit, or so it would appear. It is a 3843B current mode controller.

Here's the modular connector panel. Some seriously large metal pieces are employed as conductors to help move the voltages to the pins that need them.

Behind the modular connector panel, we see the Rubycon electrolytic capacitors used to filter the 12V output. What you can't see in this picture are several large shunt resistors near those big 10 gauge wires, which are usually used to provide multirail overcurrent protection. So, it's looking to me so far like this unit does have the ability to add that switch I was talking about on page one.

This unit uses the VRM approach for all three main rails. This is the back of the 3.3V VRM. A 1587A controller, two K0391's and two K0394's handle this VRM. The 5V VRM has a similar silicon compliment.

That PCB right in the middle of the picture handles the protection duties, and then some. A Weltrend WT7527S handles the overvoltage and undervoltage protection on the unit. It also has overcurrent protection capabilities for up to two 12V rails.

Two of these were also found on this same PCB. I couldn't find a datasheet for them. Two HC74AG chips were found on the backside of the PCB.

Primary side switchers are these here 6R125P's. There are four of them. I could not identify the PFC components - desoldering the transistors would have killed the unit due to SMD components that were entirely too close for comfort. It's too nice a day to go around killing units this awesome on purpose.

This is the front of the 3.3V VRM.

What you're looking at here is the backside of the 5VSB board. Fan control is also located here.

Out front, there are some transient filtering components. Two coils, a MOV, four Y capacitors, and two X's.

Last but not least, we have the double VRM for the 12V rail. A 2812 controller can be found on each side, along with what appears to be four (total of eight) Infineon BSC019N04NS power transistors.

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