Montech Titan Gold 850W PSU Review

Part Analysis

General Data
Manufacturer (OEM) CWT
Platform CSZ
PCB Type Double-Sided
Primary Side
Transient Filter 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush Protection 1x NTC Thermistor SCK-075 (7 Ohm) & Relay
Bridge Rectifier(s)
2x GBJ1506 (600V, 15A @ 100°C)
2x Infineon IPA60R125P6 (650V, 19A @ 100°C, Rds(on): 0.125Ohm)
APFC Boost Diode
1x Infineon IDH08G65C6 (650V, 10A @ 140°C)
Bulk Cap(s)
1x Rubycon (420V, 470uF, 2,000h @ 105°C, MXE)
1x Rubycon (450V, 330uF, 3,000h @ 105°C, MXG)
Main Switchers
2x Infineon IPA60R190P6 (650V, 12.7A @ 100°C, Rds(on): 0.190Ohm)
APFC Controller
Champion CM6500UNX
Resonant Controller Champion CU6901VAC
Primary side: APFC, Half-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs 6x Infineon BSC014N04LS (40V, 125A @ 100°C, Rds(on): 1.4mOhm)
5V & 3.3V DC-DC Converters: 2x UBIQ QN3107M6N (30V, 70A @ 100°C, Rds(on): 2.6mOhm) &
2x UBIQ QM3054M6 (30V, 61A @ 100°C, Rds(on): 4.8mOhm)
PWM Controller(s): uPI-Semi uP3861P
Filtering Capacitors Electrolytic:
2x Nippon Chemi-Con (105°C, W)
1x Nichicon (2-4,000h @ 105°C HD)
3x Nichicon (4-10,000h @ 105°C, HE)
1x Nichicon (5-6,000h @ 105°C HV)
1x Rubycon (3-6,000h @ 105°C YXG)
1x Rubycon (2-10,000h @ 105°C YXF)Polymer: 18x FPCAP, 9x Chemi-Con
Supervisor IC Weltrend WT7502R
Fan Controller Microchip PIC16F1503
Fan Model Hong Hua HA13525H12SF-Z (135mm, 12V, 0.5A, Fluid Dynamic Bearing Fan)
5VSB Circuit
1x D10S45L SBR (45V, 10A)
Standby PWM Controller On-Bright OB2365T

This is the widely used CSZ platform by Channel Well Technology (CWT). This is the most popular platform among ATX v3.0 PSUs since it was among the first to meet the strict transient response requirements, and it also offers good performance and quiet enough operating, covering a wide wattage range from 750W to 1200W. On the primary side, we meet a half-bridge topology and an LLC resonant converter on the primary side. The secondary side employs a synchronous design for rectifying the 12V rail and a pair of DC-DC converters for the minor rails. The soldering quality is good, as usually is the case in CWT-made products.

The build quality is high, and all parts are by respectable manufacturers, so they will most likely outlive the long warranty, especially under proper operating conditions. In PSUs, the expected lifetime has to do mostly with external factors like the quality of the mains. You should not expect a PSU to live long if the mains grid in your area is highly unstable or you operate it during a thunderstorm without any protection devices before it.

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