Part Analysis
| General Data | |
| Manufacturer (OEM) | Helly Technology |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 2x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor MF73T-2 20/7 (20 ohm) & Relay |
| Bridge Rectifier(s) |
2x GBU15J (600V, 15A @ 100°C)
|
| APFC MOSFETs |
2x Oriental Semiconductor OSG65R099HT3ZF (650V, 25.3A @ 100°C, Rds(on): 99mOhm)
|
| APFC Boost Diode |
1x Sanan SDS065J010C3 (650V, 10A @ 155°C)
|
| Bulk Cap(s) |
1x TDK (420V, 1,000uF, 2,000h @ 105°C, EPCOS)
|
| Main Switchers |
2x FuXin Semiconductor FXN45N50T (500V, 16.7A @ 100°C, Rds(on): 0.20Ohm)
|
| Resonant Controller |
Champion CM6901T6X
|
| APFC Controller |
Champion CM6500UNX
|
| Topology |
Primary side: APFC, Half-Bridge & LLC Resonant converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 8x Huayi HYG009N04LS1C2 (40V,233A @ 100°C, Rds(on): 0.96mOhm) |
| 5V & 3.3V | DC-DC Converters: 2x XSEMI XP3NA3R4MT (30V, 46A @ 100°C, Rds(on): 3.4mOhm) & 2x Rectron Semiconductor RMN3N5R0DF (30V, 19.7A @ 70°C, Rds(on): 5mOhm) PWM Controller(s): 2x Anpec APW7073 |
| Filtering Capacitors | Electrolytic: 11x Ltec (2-5,000h @105°C, LXY) 3x Ltec (4-7,000h @105°C, LZG) 1x CS (3,000h @105°C, WE) Polymer: 21x Apaq, 4x Chengx (PC) |
| Supervisor IC | Weltrend WT7527RA (OVD, PGO, UVD, OCD) |
| Fan Model | Hong Hua HA1225H12F-Z (120mm, 12V, 0.58A, Fluid Dynamic Bearing Fan) |
| 5VSB | |
| Rectifier(s) |
P6SMB (220V, 1A) & 1x Dongke Semiconductor DK5V60R20S
|
| Standby PWM Controller |
Excelliance MOS EM8569C
|
As you can see, the modular sockets are installed directly on the main PCB; this way, energy losses are minimized since no interconnections are required between the modular and the main PCB. The heatsinks are large enough to handle the platform’s thermal loads, and there is plenty of room between the components for good airflow. This means the cooling fan won’t have to spin fast to remove the heat from the PSU’s internals.
The main transformer is surrounded by heatsinks that cool down the 12V FETs installed on the PCB’s business side. The only daughter-boards host the DC-DC converters that handle the minor rails. The design is contemporary, with a half-bridge topology and an LLC resonant converter on the primary side for lower energy losses. The primary side’s controllers are by Champion, and the APFC FETs are by Oriental Semiconductor, which I have met before on other platforms. Helly went with Chubese FETs to keep the cost down. The same goes for the majority of the capacitors on the secondary side. LTec didn’t have a great reputation with a quick search I made on the net, but I plan to check these capacitors to determine whether they are reliable.
The cooling fan, a vital part significantly affecting a PSU’s reliability, is provided by Hong Hua. It uses a fluid dynamic bearing to last a long under normal operating conditions. Lastly, the soldering quality is good enough and won’t create any performance or reliability issues.
i;m sorry Aris it’s looks like Beryl BC polymer rather than APAQ