Deepcool PX1200G PSU Review

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 WeEn WNB2560M (600V, 25A @ 127°C)
3x Infineon IPA60R099P6 (600V, 24A @ 100°C, Rds(on): 0.099Ohm) &
1x SyncPower SPN5003 (for reducing the no-load consumption)
APFC Boost Diode
1x Cree C3D12065A (650V, 12A @ 150°C)
Bulk Cap(s)
1x Nippon Chemi-Con (420V, 470uF, 2,000h @ 105°C, KMZ) &
1x Nippon Chemi-Con (450V, 680uF, 2,000h @ 105°C, KMZ)
Main Switchers
2x Infineon IPA60R099P6 (600V, 24A @ 100°C, Rds(on): 0.099Ohm)
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 10x Infineon BSC014N06NS (60V, 152A @ 100°C, Rds(on): 1.45mOhm)
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)
2x Nichicon (2-5,000h @ 105°C, HD)
1x Nichicon (5-6,000h @ 105°C, HV)
1x Nichicon (4-10,000h @ 105°C, HE)
1x Nippon Chemi-Con (2-5,000h @ 105°C, KZE)
1x Nippon Chemi-Con (4-10,000h @ 105°C, KYA)
1x Rubycon (10,000h @ 105°C, YXM)
1x Rubycon (4-10,000h @ 105°C, YXF)Polymer: 10x FPCAP, 16x Nippon Chemi-Con
Supervisor IC Weltrend WT7502R (OVP, UVP, SCP, PG)
Fan Controller Microchip PIC16F1503
Fan Model Hong Hua HA13525H12SF-Z (135mm, 12V, 0.5A, Fluid Dynamic Bearing Fan)
5VSB Circuit
1x PS1045L SBR (45V, 10A)
Standby PWM Controller On-Bright OB2365T

This is the popular CSZ platform CWT provides, used in many high-capacity ATX v3.0 PSUs. 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 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.

I won’t stand anymore in this section since I have already described CWT’s CSZ platform in many of my reviews.

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