Montech Titan Gold 1200W 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-207R0 (7 Ohm) & Relay
Bridge Rectifier(s)
2x Vishay LVB2560 (600V, 25A @ 105°C)
3x Infineon IPA60R099P6 (600V, 24A @ 100°C, Rds(on): 0.099Ohm)
APFC Boost Diode
1x On Semiconductor FFSP1665A (650V, 16A @ 135°C)
Bulk Cap(s)
1x Rubycon (420V, 680uF, 2,000h @ 105°C, MXE) &
1x Nippon Chemi-Con (420V, 470uF, 2,000h @ 105°C, KMZ)
Main Switchers
2x Infineon IPA60R099P6 (600V, 24A @ 100°C, Rds(on): 0.099Ohm)
APFC Controller
Champion CM6500UNX & CM03X
Resonant Controller Champion CU6901VAC
Primary side: APFC, Half-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs 10x Infineon BSC010N04LS (40V, 178A @ 100°C, Rds(on): 1mOhm)
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 Nippon Chemi-Con (2-5,000h @ 105°C, KZE)
1x Nippon Chemi-Con (4-10,000h @ 105°C, KY)
1x Nippon Chemi-Con (4-10,000h @ 105°C, KYA)
2x Nichicon (2-5,000h @ 105°C HD)
1x Nichicon (5-6,000h @ 105°C HV)
2x Nichicon (4-5,000h @ 105°C HE)Polymer: 26x FPCAP, 2x 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 popular CSZ platform made by CWT. The design uses analog controllers for all circuits. A half-bridge topology and an LLC resonant converter are on the primary side. The secondary side utilizes a synchronous rectification scheme with ten Infineon FETs generating the 12V rail and two VRMs for the minor rails.

The primary side is identical to the Thermaltake GF3 1200, but I spotted a significant difference on the secondary side. Eight Infineon regulates the 12V rail on the TT unit, while in the Montech PSU, ten Infineon FETs of the same model are used. Two more FETs mean less stress since the load is split among them and lower energy losses at high loads.

The cooling fan is by Hong Hua and uses a fluid dynamic bearing for lower noise output and increased reliability. Lastly, the build quality is high; the same goes for the soldering quality. At the solder side of the PCB, CWT also enhanced some PCB traces with copper plates, for better conductivity and lower power losses, at high loads.

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