General Data
Manufacturer (OEM) CWT (GPW platform)
PCB Type Single-Sided
Primary Side
Transient Filter 2x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush Protection NTC Thermistor SCK-056 5Ohm & Relay
Bridge Rectifier(s)
1x  GBU15005 (600V, 15A @ 100°C)
2x Wayon WML28N50C4 (500V, 16A , Rds(on): 0.125Ohm) &
1x Syncpower SPN5003 FET (for reduced the no-load consumption)
APFC Boost Diode
1x CRMICRO CRXI06D065G2 (600V, 6A @ 167°C)
Bulk Cap(s)
1x Elite (400V, 470uF, 2000h @ 85°C, GM)
Main Switchers
4x Silan Microelectronics SVF20N50F (500V, 12.6A @ 100°C, Rds(on): 0.27Ohm)
APFC Controller
Champion CM6500UNX
Resonant Controller
Champion CM6901X
Primary side: APFC, Full-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs 4x Infineon BSC014N04LS (40V, 100A @ 100°C, Rds(on): 1.4mOhm)
5V & 3.3V DC-DC Converters: 4x Infineon SPN3006 (30V, 57A @ 100°C, Rds(on): 5.5mOhm)
PWM Controller(s): APW7159C
Filtering Capacitors Electrolytic: 11x Chengx (2-3,000h @ 105°C ,GR)
Polymer: 14x CapXon
Supervisor IC IN1S313I-DAG
Fan Model Martech DF1202512FDHN (120mm, 12V, 0.42A, Fluid Dynamic Bearing Fan)
5VSB Circuit
Standby PWM Controller Power Integrations TNY290

The OEM of this PSU is Channel Well Technology (CWT), and the platform’s code name is GPW. This is not a popular platform, but it uses a contemporary design. We find a full-bridge topology on the primary side. I remember these Silan FETs from the DeepCool GamerStorm DQ-M PSU review, which uses the GPX platform. It is weird to find a full bridge on a budget-oriented PSU, but instead of two more capable (and more expensive) FETs, CWT can use four lower-cost ones. An LLC resonant converter is also used to minimize energy losses.

On the secondary side, we find the typical stuff: a synchronous rectification scheme for 12V and a pair of DC-DC converters for the minor rails. CWT used good FETs on the secondary side to avoid any issues, but the caps don’t belong to a tier #1 manufacturer. The same goes for the bulk cap, which is by a good brand, Elite, but only rated at 85°C. Nevertheless, it will probably not have a problem outliving the five-year warranty if you don’t use it under extreme operating conditions. Probably now, with the drop in hold-up time requirement, brands will be able to use higher-quality bulk caps.

The cooling fan is by Martech to keep the cost down. Hong Hua and Globe Fan products are more expensive, and there is no room here for expensive parts. It claims that it uses a fluid dynamic bearing, which will help it live more.

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