Part Analysis
| General Data | |
| Manufacturer (OEM) | FSP |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 1x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 3x NTC Thermistor SCK-2R515 (2.5 Ohm @ 25°C) & Relay |
| Rectifier FETs |
8x CEL68N60SF (600V, 43A @ 100°C, Rds(on): 37mOhm))
|
| APFC MOSFETs |
4x Infineon IPA60R120C7 (650V, 7A @ 100°C, Rds(on): 0.120Ohm)
|
| APFC Boost Diode |
2x Infineon IDH10G65C6 (650V, 10A @ 140°C)
|
| Bulk Cap(s) |
3x Nippon Chemi-Con (450V, 560uF each or 1680uF combined, 2,000h @ 105°C, KMW)
|
| Main Switchers |
4x Cmsemicon CMS6047B
|
| Gate Drivers | 2x Texas Instruments UCC21520 |
| APFC Controller | Texas Instruments UCC28070 |
| Resonant Controller | Champion CM6901T2X |
| Topology |
Primary side: Bridgeless, APFC, Full-Bridge & LLC Resonant converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 12x Cmsemicon CMR009N04NS |
| 5V & 3.3V | DC-DC Converters: 6x Infineon BSC0902NS (30V, 67A @ 100°C, Rds(on): 2.6mOhm) PWM Controller(s): UPI-semi uP3861P |
| Filtering Capacitors | Electrolytic: 5x Nippon Chemi-Con (@ 105°C, W) 2x Rubycon (6-10,000h @ 105°C, ZLH) 1x Nippon Chemi-Con (6-10,000h (@ 105°C, KZN) Polymer: 42x Nippon Chemi-Con, 1x FPCAP |
| Supervisor IC | Weltrend WT7527RA (OCP, OVP, UVP, SCP,PG) |
| Fan Controller | APW9010 |
| Fan Model | Power Logic PLA13525S12M (135mm, 12V, 0.40A, Hydro Dynamic Bearing Fan) |
| 5VSB Circuit | |
| Rectifier |
61N06S
|
| Standby PWM Controller | Power Integrations INN3166C |
The large PCB is overloaded with parts. FSP didn’t use large heatsinks, but enough space between the parts allows for good airflow. Several daughter boards are used to save space, including two large and an enormous one. It is always good to see large electrolytic caps on the secondary side since the more the capacity, the better the transient response.
FSP used a bridgeless APFC converter to increase efficiency, where FETs are used instead of bridge rectifiers, which contain SBRs. A Texas Instrument IC controls the APFC converter, while a Champion controller handles the primary side’s switching FETs and a part of the secondary side. The 12V rail is regulated through twelve FETs, and the same rail feeds a pair of DC-DC converters, which generate the minor rails.
The build quality is high; the same goes for the soldering quality. FSP used branded Japanese caps everywhere and Infineon FETs on the secondary side. The cooling fan is by Power Logic. This brand has higher quality products than Hong Hua but is more expensive, so most brands prefer the latter. For me, Power Logic fans are the real deal, and I am happy to see them again at PSUs.
Wouldn’t have expected AsRock to enter that space but it’s always a welcome surprise to see new competition. Are there any plans to also test their SL-G and PG-G units?