Part Analysis
| General Data | |
| Manufacturer (OEM) | Super Flower |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 6x Y caps, 3x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor SCK-0512 (5 ohm) & Relay |
| Bridge Rectifier(s) |
2x GBU25M (1000V, 25A @ 60°C)
|
| APFC MOSFETs |
3x Sanrise SRC60R140B (600V, 11.2A @ 125°C, Rds(on): 140mOhm) &
1x Sync Power SPN5003 FET (for reducing the no-load consumption)
|
| APFC Boost Diode |
1x STMicroelectronics STTH12R06D (600V, 12A @ 125°C)
|
| Bulk Cap(s) |
1x Nippon Chemi-con (450V, 790uF, 2,000h @ 105°C, KHE)
|
| Main Switchers |
4x Sanrise SRC60R140B (600V, 11.2A @ 125°C, Rds(on): 140mOhm)
|
| Resonant Controller |
STMicroelectronics STMZ6L331
|
| APFC Controller |
Infineon ICE3PCS02G |
| Topology |
Primary side: APFC, Full-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 12x Sanrise SRT04N016L (40V, 77A @ 125°C, Rds(on): 1.6mOhm) |
| 5V & 3.3V | DC-DC Converters: 4x Alpha & Omega AON6516 (30V,25A @ 100°C, Rds(on): 5mOhm) PWM Controller(s): 2x Anpec APW7073 |
| Filtering Capacitors | Electrolytic: 32x CapXon (2-5,000h @105°C, KF) 5x Chengx (2,000h @105°C, KM) Polymer: 11x CapXon |
| Supervisor IC | JTC113 & LM324ADG |
| Fan Controller | STMicroelectronics ST69345 |
| Fan Model | ZIC ZFF142512D (140mm, 12V, 0.65A, Fluid Dynamic Bearing Fan) |
| 5VSB | |
| Rectifier | |
| Standby PWM Controller |
Axelite AX3111
|
This is a typical Leadex design. Although the PCB is small, it is not overpopulated with parts, thanks to the small main transformer and the number of vertical daughterboards used. For example, the main switching FETs are installed on a small daughterboard right after the big bulk capacitor, which has a small heatsink to help cool them down. The PCB also contributes to their cooling. The main FETs are arranged in a full-bridge topology, which is the best for high power output and efficiency levels.
On the secondary side, twelve FETs handle the 12V rail, which feeds a pair of DC-DC converters to generate the minor rails. Each DC-DC converter uses its own PWM controller and has two FETs provided by Alpha & Omega. Lastly, the filtering caps are provided by CapXon and ChengX, two Chinese brands. I know that most of you frown upon the sight of Chinese caps, but things have changed, and these products have vastly improved. I know this firsthand since I started testing caps a while ago and visited ChengX’s factory to learn more about how caps are manufactured. Japanese caps are still of extra-high quality but also super expensive, so they are unsuitable for budget-oriented products. Their availability is also limited since everyone was to have them, especially the EV car manufacturers.
The cooling fan uses a fluid dynamic bearing and is manufactured by Jiete Aviation Model Technology, which has a factory in Guangzhou. Next time I visit this town, I will visit them since they seem to be Hong Hua’s main adversary.
