Part Analysis
| General Data | |
| Manufacturer (OEM) | High Power |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 2x NTC Thermistor SCK057 (5 ohm) & Relay |
| Bridge Rectifier(s) |
4x EGBJ2506506
|
| APFC MOSFETs |
2x CRMicro CRXQ45M065G2Z
|
| APFC Boost Diode |
2x CREE C3D10060A (600V, 14.5A @ 135°C)
|
| Bulk Cap(s) |
3x Rubycon (420V, 560uF each or 1680uF combined, 2000h @ 105°C, MXE)
|
| Main Switchers |
4x Sanrise Tech SRC60R068BS (600V, 21.5A @ 125°C, Rds(on): 68mOhm)
|
| APFC Controller |
ATK AT6201ZSPF
|
| Resonant Controller |
Champion CM6901X
|
| IC Driver |
3x Infineon 2N7524AF
|
| Topology |
Primary side: Interleaved PFC, Full-Bridge & LLC Resonant converter
Secondary side: [12V] Synchronous Rectification & [Minor Rails] DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 12x CRMicro CRST020N06N4Z (60V, 136A @ 100°C, Rds(on): 2.3mOhm) |
| 5V & 3.3V | DC-DC Converters: 8x Infineon BSC0906NS (30V, 40A @ 100°C, Rds(on): 4.5mOhm) PWM Controller(s): uPI-Semi uP3861P |
| Filtering Capacitors | Electrolytic: 7x Rubycon (6-10,000h @105°C, ZLH) 5x Rubycon (3-6,000h @105°C, YXG) 1x Rubycon (2-10,000 @ 105°C, YXF) 2x Rubycon (4-10,000h @105°C, YXJ) Polymer: 25x FPCAP, 8x Nippon Chemi-con |
| Supervisor IC | Weltrend WT7527RA |
| Fan Model | Globe Fan RL4Z B1352512EH (135mm, 12V, 0.50A, Double Ball Bearing Fan) |
| 5VSB | |
| Rectifier | |
| Standby PWM Controller |
Voltatech SI8016HSP8
|
The PCB is large and relatively loaded on its left side. There are several heatsinks to help control the temperatures, and High Power also utilizes several vertical daughterboards to maximize the vertical space. The APFC converter’s area is the most overloaded one, due to the heatsink, the pair of transformers, and the three bulk capacitors. The main transformers are also in the vicinity. The design features a contemporary architecture with an interleaved PFC, a full-bridge topology, an LLC resonant converter, and synchronous rectification on the secondary side, complemented by a pair of DC-DC converters.
The transient filtering stage contains all the necessary components to block both incoming and outgoing EMI emissions. Typically, it starts at the AC receptacle and continues on the main printed circuit board (PCB).
A MOV handles voltage surges. Two NTC thermistors handle inrush currents, and a bypass relay puts them off the circuit once the PSU starts.
Four bridge rectifiers handle the incoming AC voltage and transform it into a loosely regulated DC signal.
An interleaved APFC converter is used, where two PFC circuits operate in parallel with a phase difference. This minimizes input and output current ripple and lowers conduction losses, increasing efficiency and doubling the effective switching frequency. The interleaved APFC converter uses two CRMicro CRXQ45M065G2Z FETs and two Jilin Sind boost diodes. Rubycon manufactures the bulk caps and offers a combined capacity of 1680 μF. They are rated for 2,000 h at 105 °C.
The APFC controller is an ATK AT6201ZSPF.
The four Sanrise Tech SRC60R068BS primary switching FETs are installed in a full-bridge topology, and an LLC resonant converter is used for higher efficiency.
The LLC controller is a Champion CM6901X.
The main parallel transformers handle an immense load while isolating the primary and secondary sides.
12x CRMicro CRST020N06N4Z FETs regulate the 12V rail. They are installed on proper heatsinks.
Two DC-DC converters generate the minor rails. The common PWM controller is an Anpec APW7159C.
Rubycon provides the electrolytic filtering capacitors. Chemi-Con and FPCAP make the polymer caps.
You can find more information about capacitor performance and other specs below:
The supervisor controller is a Weltrend WT7527RA.
The standby PWM controller is a Voltatech SI8016HSP8 IC.
Several polymer caps at the face of the modular panel form a ripple-filtering layer.
The soldering quality is good enough. The unit’s secondary side is reinforced with additional copper plates for improved conductivity.
The cooling fan is a powerful Globe Fan RL4Z B1352512EH, using double ball bearings.
Is there a test planned für the FSP Mega Ti 1650W? 🙏
Yeap
Nice 🤘