Thermaltake Toughpower GF3 ARGB 750W PSU Review

Part Analysis

General Data
Manufacturer (OEM) High Power
PCB Type Double-Sided
Primary Side
Transient Filter 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x MPS HF81 (Discharge IC)
Inrush Protection NTC Thermistor & Relay
Bridge Rectifier(s)
2x  HY GBU1006F (600V, 10A @ 100°C)
APFC MOSFETs
2x SI28S60F
APFC Boost Diode
1x Maplesemi MSP08065G1 (650V, 8A @ 150°C)
Bulk Cap(s)
1x Rubycon (420V, 680uF, 3,000h @ 105°C, MXK)
Main Switchers
2x SI28S60F
APFC Controller
Infineon ICE3PCS01G
Resonant Controller Champion CU6901VAC
Topology
Primary side: APFC, Half-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs 6x IPS 014N04SA
5V & 3.3V DC-DC Converters: 4x Infineon BSC0906NS (30V, 40A @ 100°C, Rds(on): 4.5mOhm)
PWM Controller(s): uPI uP3861P
Filtering Capacitors Electrolytic: 1x Nichicon (4-10,000h @ 105°C, HE), 6x Rubycon (3-6,000h @ 105°C, YXG), 4x Rubycon (6-10,000h @ 105°C, ZLH)
Polymer: 22x FPCAP, 2x Nippon Chemi-Con
Supervisor IC WT7527RA (OCP, OVP, UVP, SCP, PG)
Fan Model Thermaltake TT-1425 A1425S12S-2 (Hong Sheng) (140mm, 12V, 0.70A, Hydraulic Bearing Fan)
5VSB Circuit
Rectifier
1x D.G.M.E DG4N70S FET (700V, 2.5A @ 100°C, Rds(on): 3.2Ohm)
Standby PWM Controller SI8016HSP8
-12V
Rectifier
1x KEC KIA7912PI (-12V, 1A)

High Power provides the platform and uses a design for the modular board, which I rarely encounter in high-end or mid-end units. The modular board is connected to the primary one through cables instead of bus bars. This means that increased energy will go wasted on the connecting cables, especially at high loads, and airflow is affected as well. The PCB’s design doesn’t leave room for the modular board to be directly connected to it, but with some rearrangement, this could be the case. After all, the PCB is not densely populated; however, lots of space is available in the transient filter area.

On the primary side, besides the APFC converter, we find a half-bridge topology and an LLC resonant converter for minimized energy losses. A synchronous rectification scheme for the 12V rails and a pair of DC-DC converters generate the minor rails on the secondary side. The build quality is good, and the electrolytic caps that High Power used after TT’s request are highly reliable especially the bulk caps.

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