Fractal Design Tesla R2 1000 W Review 3

Fractal Design Tesla R2 1000 W Review

Voltage Regulation, Hold-up Time & Inrush Current »

A Look Inside & Component Analysis

Before reading this page, we strongly suggest a look at this article, which will help you understand the internal components of a PSU much better. Our main tool for the disassembly of the PSU is a Thermaltronics TMT-9000S soldering and rework station. It is of extreme quality and is equipped with a matching de-soldering gun. With such equipment in hand, breaking apart every PSU is like a walk in the park!

Like its high-end brother, the NEWTON R3 1000 W, this unit is made by ATNG. It utilizes an LLC resonant converter to boost efficiency. Also, the two secondary DC-DC converters generate the minor rails, which increases efficiency even more while providing the highly desired compliance with the new C6 and C7 power states that Intel's Haswell processor offers.

Behind the AC receptacle is a small PCB that holds three X caps, four Y caps, and a CM choke. The transient filter continues on the main PCB with two X caps and a CM choke. There are also two Y caps after the bridge rectifiers, and the MOV is strangely enough installed between these and the PFC input capacitor.

The rectifier bridges, two U15K80R, are bolted together on the primary heatsink. They can handle up to 15 A of current combined.

Two Infineon SPW32N50C3 fets in the APFC shape the input current sinusoidal, and a couple of CREE C3D06060 boost diodes help in boosting the pulsating rectified mains up to a ~380V DC. The bulk, or hold-up caps, are provided by Teapo (400V, 270μF, 85°C, LH series), and their combined capacity reaches 540 μF. The more expensive Newton R3 1000 W instead uses two Rubycons rated at 105°C and of the same capacity. Finally, the PFC controller is a 2PCS01 IC; it has been installed on the solder side of the main PCB.

Two IXFH 44N50P are used as primary switchers. Right next to them are three caps that belong to the LLC resonant converter.

The secondary side utilizes synchronous rectification for the generation of the +12V rail; eight IXTP18 2N055T fets are up to that task. The minor rails are delivered through two DC-DC converters. We find a CAT7523 PWM controller along with two Infineon IPD031N03Ls on each one.

All filtering caps in the secondary side are provided by Teapo and are rated at 105°C. We found some polymer caps mixed in with the electrolytic caps.

The supervisor IC is located on the solder side of the main PCB, and its model number is GR8313. It only provides two protections (OVP and UVP).

The standby PWM controller is most likely a TNY277 IC.

Soldering quality on the main PCB is pretty good, and all component leads are carefully trimmed.

The cooling fan carries Fractal's logo and is a little stronger than the one that the Newton R3 1000 W unit uses, since the lower efficiency required a stronger fan. It is most likely made by Globe Fan and has model number RL4Z B1352512HH (12 V, 0.45 A, 129.76 CFM, 1800 RPM, 33.9 dBA).
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