FSP Raider 550W (Page 3 of 4) | Reports

Page 3 - Physical Look - Inside

Here at APH Networks, it is a common practice for us to open up the power supply, voiding the warranty in the process. As you can see, there is nothing better than violating a brand new product, haha. While it is not necessary for the daily user to require internal inspections, if you really want to open it up, do it after the warranty is over, as any help from the manufacturer would be declined during the warranty period anyway.

Opening up the FSP Raider 550W turned out to be quite easy. Screws located at the four corners held the top shell to the frame. After removing them, a slight pull on the top easily revealed the innards of the power supply. As seen above, the photo shows an overhead view of the power supply. Components are generally spaced out to allow for better cooling. There are two main heat sinks, all of them finned as seen above.

When looking at the transient filter stage, we see that the FSP Raider has three ferrite coils, four Y-capacitors, and two X-capacitors, which is much more than the minimum requirements. Missing in action is the metal oxide varistor. Generally, the MOV is used to stabilize spikes from the incoming AC line, but according to FSP, the design of the power supply negates the need for an MOV. The soldering job on the power supply is decent with nothing to truly complain about. My only gripe is the messy globs of white glue pasted in various areas without care, which look like a sloppy finish job.

On the primary side, we see a Taiwanese made Teapo capacitor, rated at 270μF x 420V @ 85c. To be honest, I am surprised that a Japanese-made, 105c capacitor is not here, as FSP boasts this power supply to be “Best in Performance”. Taiwanese capacitors are decent in doing the job, but they are usually found in low to midrange power supply units. Okay, this is what the Raider is, so... okay.

The power supply uses one GBU1506 rectifying bridge, attached to a heatsink, supporting up to 15A of current at 100C. At 115V, the theoretical power you can pull from the bridge rectifier is 1725W at 100% efficiency. Of course, this is purely from the bridge rectifier, and not all components in the power supply can actually hold this workload. This is controlled by an FSP6600D PFC/PWM controller. This is a custom made controller, and there are no datasheets are made for it. Two JCS18N50FH MOSFET transistors are used on the active PFC circuit. Each MOSFET delivers up to 11.0A at 100c, or 18.0A at 25c in continuous mode, or 72A in pulse mode. These transistors have a maximum resistance of 0.27 ohm when turned on according to the data sheets. This is known as Static Drain-Source On-Resistance or RDS(on). The lower the value, the more efficient the component is, as it uses less power with less resistance.

The secondary side reveals a handful of more Teapo capacitors for filtering the outputs. Oddly enough, the capacitors on the secondary side are rated at 105c, yet the primary is only rated at 85c. The Raider, like the FSP AURUM, include rectifiers that produce the +12V out, while the +5V and +3.3V outputs are generated from the +12V output via a DC-DC converter in the power supply unit. The +12V rail utilizes two Infineon IPB057N06N, which is located on the silver heatsink, rated at 45A at 25c. All of the outputs are monitored by a WT7579 integrated circuit, supporting over voltage (OVP), under voltage (UVP), over current (OCP), and over temperature protection (OTP).

On the other side, we see a large 120mm fan, providing cooling to the FSP Raider 550W internal components connected to the mainboard by a 3-pin connection. Larger fans such as these provide better cooling, while operating at lower speeds to provide a quieter operation. The fan in question is a Yate Loon D12SM-12, specified at 0.30A for a maximum speed of ~1650 rpm. The rated airflow is 70.5 CFM at 33 dB of noise.

Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Outside
3. Physical Look - Inside
4. Minor Tests and Conclusion