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)
|
| APFC MOSFETs |
2x Infineon IPA60R125P6 (650V, 19A @ 100°C, Rds(on): 0.125Ohm)
|
| APFC Boost Diode |
1x Infineon IDH08G65C6 (650V, 10A @ 140°C)
|
| Bulk Cap(s) | |
| Main Switchers |
2x Infineon IPA60R190P6 (650V, 12.7A @ 100°C, Rds(on): 0.190Ohm)
|
| APFC Controller |
Champion CM6500UNX
|
| Resonant Controller | Champion CU6901VAC |
| Topology |
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 | |
| Rectifier |
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.
