Part Analysis
| General Data | |
| Manufacturer (OEM) | Seasonic |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x CM02X (Discharge IC) |
| Inrush Protection | 1x NTC Thermistor MF72-5D20L (5 Ohm) & Relay |
| Bridge Rectifier(s) |
2x
|
| APFC MOSFETs |
2x Infineon 6R125P6 (650V, 19A, @ 100°C, Rds(on): 0.125Ohm)
|
| APFC Boost Diode |
1x Cree C6D10065 (650V, 10A @ 155°C)
|
| Bulk Cap(s) | |
| Main Switchers |
4x Infineon IPA60R190P6 (650V, 12.7A @ 100°C, Rds(on): 0.12Ohm)
|
| APFC Controller | Champion CM6500UNX |
| Resonant Controller | Champion CU6901VPA |
| Topology |
Primary side: APFC, Full-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 6x Nexperia PSMN1R0-40YLD (40V, 198A @ 100°C, Rds(on): 1.93mOhm) |
| 5V & 3.3V | DC-DC Converters: 6x Nexperia PSMN4R0-30YLD (30V, 67A @ 100°C, Rds(on): 6.6mOhm) PWM Controller(s): ANPEC APW7159C |
| Filtering Capacitors | Electrolytic: 3x Nichicon (2-5,000h @ 105°C, HD), 1x Nippon Chemi-Con (1-5,000h @ 105°C, KZE), 5x Rubycon (3-6,000h @ 105°C, YXG) 8x Rubycon (6-10,000h @ 105°C, ZLH) Polymer: 6x Nippon Chemi-Con, 22x FPCAP, 9x NIC |
| Supervisor IC | Weltrend WT7527RA (OVP, UVP, OCP, SCP, PG) |
| Fan Controller | Nuvoton M031FB0AE |
| Fan Model | Hong Hua HA13525H12F-Z (135mm, 12V, 0.50A, Fluid Dynamic Bearing Fan) |
| 5VSB Circuit | |
| Standby PWM Controller | Excelliance MOS EM8569C |
Of course, Seasonic is the OEM, and the platform’s design is contemporary. It has a full-bridge topology on the primary side and an LLC resonant converter for lossless switching and increased efficiency. Six Nexperia FETs regulate the 12V rail on the secondary side, with the same rail powering a pair of DC-DC converters, which generate the minor rails. The PCB is not densely populated, leaving enough space between parts for good airflow. The heatsinks on the primary side are relatively small, as is the case in most high-efficiency PSUs, and tiny on the secondary side.
There aren’t any components on the PCB’s solder side since all of them are installed on the other side, including the 12V FETs. Seasonic used quality parts in this platform, including Infineon and Nexperia FETs, Chemi-Con and Rybycon caps, and a Hong Hua fan featuring a fluid dynamic bearing. Seasonic installed many polymer and electrolytic caps on the modular board to improve ripple suppression and transient response. It is always good to see increased capacity on the secondary side because it plays a crucial role in transient response, which is what the PSU will have to deal with in real-life scenarios where the loads are not steady but constantly change.
I think fsp 1000w ti is still cheaper in my country and performs much better than this psu. I expected more from seasonic tbh.
Disappointing results from Seasonic here particularly from a new line up they advertised them for so long per https://seasonic.com/news/sea-sonic-to-launch-new-vertex/ here.
Thanks for the review ! Appreciate the 115V/230V detail in the Noise output section
I have to admit, I am quite disappointed with this PSU.
I got the PX-1200 model and the Corsair SF1000 (in case I could not manage to fit the Seasonic one in my lian A3-matx), and so far the corsair has been superior despite the lower capacity and form factor. In fact, the corsair is much quieter under low/medium loads, and under high loads, I can only hear my GPU anyway.
Protection features are also quite disappointing with this Vertex series, and efficiency is just marginally higher than the gold certified version
To sum it up, the Corsair SF1000 has been, at least for me:
– quieter
– cheaper
– MUCH less bulky
– ATX 3.1 compliant