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Teardown & Component Analysis
Before proceeding with this page we strongly encourage you to a look at our PSUs 101 article, which provides valuable information about PSUs and their operation, allowing you to better understand the components we're about to discuss.
| General Data | |
|---|---|
| Manufacturer (OEM) | Seasonic |
| Platform Model | FX |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x CM02X |
| Inrush Protection | NTC thermistor & diode |
| Bridge Rectifier(s) | 2x GBU1508 (800V, 15A @ 100°C) |
| APFC MOSFETs | 2x Infineon IPW50R190CE (550V, 15.7A @ 100°C, 0.19Ω) |
| APFC Boost Diode | 1x STMicroelectronics STTH8S06D (600V, 8A @ 125°C) |
| Hold-up Cap(s) | 1x Nichicon (400V, 680uF, 2000h @ 105°C, GG) |
| Main Switchers | 4x UTC GPT13N50DG (500V, 13A @ 100°C, 0.49Ω) |
| APFC Controller | Champion CM6500UNX |
| Resonant Controller | Champion CM6901T6X |
| Topology | Primary side: Full-bridge & LLC resonant controller Secondary side: Synchronous rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 4x Nexperia PSMN2R6-40YS (40V, 100A @ 25°C, 2.8mΩ) |
| 5V & 3.3V | DC-DC Converters: 6x Infineon BSC0906NS (30V, 40A @ 100°C, 4.5mΩ) PWM Controller: APW7159 |
| Filtering Capacitors | Electrolytics: Chemi-Con (1-5000 @ 105°C, KZE), Chemi-Con (4-10,000 @ 105°C, KY), 2x Nichicon (2-5000 @ 105°C, HD), 1x Rubycon (3-6000 @ 105°C,YXG) Polymers: Chemi-Con, FPCAP |
| Supervisor IC | Weltrend WT7527V (OVP, UVP, OCP, SCP, PG) |
| Fan Model | Hong Hua HA1225H12F-Z (120mm, 12V, 0.58A, 2200 RPM, fluid dynamic bearing) |
| 5VSB Circuit | |
| Standby PWM Controller | Excelliance EM8569 |
The HCG850's internals are nearly identical to what you'd find in Seasonic's Focus Plus Gold. We only spotted a few differences in the bridge rectifiers, along with some of the secondary side's capacitors. Instead of a pair of large Nippon Chemi-Con W caps, Antec's version employs two Nichicon caps. More than likely, this is due to a parts shortage, though the Nichicon caps are similarly high-quality. In addition to the Chemi-Con polymer capacitors, we also find several FPCAP polymer caps.
While this PSU's platform performs well, it's not particularly quiet. The PCB is small, and there isn't much space between the components for optimal airflow. On top of that, Antec provides a 10-year warranty, so the company has to make sure it doesn't die prematurely under tough conditions. The result is an aggressive fan profile. In our opinion, if Antec insisted on a 135mm fan, the HCG850's acoustics would have been easier to control.
The album above includes photos showing the HCG850's major parts.
The video below shows the HCG850’s internals.
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