Part Analysis
| General Data | |
| Manufacturer (OEM) | Super Flower |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 3x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor SCK-0512 (5 Ohm @25°C) & Relay |
| Bridge Rectifier(s) |
2x GBU15J (700V, 15A @100°C)
|
| APFC MOSFETs |
3x Infineon IPAW60R180P7S (650V, 11A @ 100°C, Rds(on): 0.180Ohm) &
1x Syncpower SPN5003 FET (for reduced no-load consumption) |
| APFC Boost Diode |
1x CREE C3D08065I (650V, 7.5A @ 135°C)
|
| Bulk Cap(s) |
1x Nippon Chemi-Con (400V, 820uF @ 105°C, CE)
|
| Main Switchers |
4x Infineon IPI50R199CP (550V, 11A @ 100°C, Rds(on): 0.199Ohm) |
| APFC Controller |
Infineon ICE3PCS02G
|
| Resonant Controller |
AS393AM
|
| Topology |
Primary side: APFC, Full-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 8x RA54ACW35C |
| 5V & 3.3V | DC-DC Converters: 4x Alpha & Omega GL3P15 PWM Controller(s): 2x ANPEC APW7073 |
| Filtering Capacitors | Electrolytic: 5x Nippon Chemi-Con @ 105°C, (W), 1x Nippon Chemi-Con (2-5,000 @ 105°C, KZE) 5x Rubycon (6-10,000 @ 105°C, ZLH) Polymer: 1x Nippon Chemi-Con KMG 2x Nippon Chemi-Con KYA 1x Nippon Chemi-Con KY 1x Rubycon YXF, 7x Nippon Chemi-Con KRG 18x Nippon Chemicon |
| Supervisor IC | JTC113 |
| Fan Model | ZIC ZFF142512D (140mm, 12V, 0.65A, Fluid Dynamic Bearing Fan) |
| 5VSB | |
| Rectifiers |
1x PFC PFR20L60CT SBR (60V, 20A) &
|
| Standby PWM Controller | 29604 |
The platform is identical to the Leadex VII Gold platform, which I reviewed a while ago, but with some minor differences. One is the higher capacity bulk cap, which allows for a long hold-up time. Thanks to the extended use of vertical boards, there is plenty of space between the platform’s components for good airflow, so the fan doesn’t have to spin fast to keep the PSU’s internal temperature in control. Moreover, as you can see on the unit’s secondary side, many polymer caps are used, besides many polymer caps, to offer enough capacitance, which is essential for a good transient response. Most manufacturers avoid using many electrolytic caps because the quality ones are expensive, and if you don’t use quality electrolytic caps, the PSU’s lifetime will be short.
A half-bridge topology and an LLC resonant converter are used for lower power losses on the primary side. Super Flower has mastered this specific topology, offering the highest possible performance. Only through digital circuits can they notably improve performance, but unfortunately, not many PSU manufacturers proceed with digital technology in their designs, primarily because of the cost factor. Eight FETs regulate the 12V rail on the secondary side, and a pair of DC-DC converters handle the minor rails. A new and promising OEM provides the fan, which uses a fluid dynamic bearing.
The build quality is high. The soldering quality is not the best I have seen from Super Flower, with some oversized soldering jobs on the PCB’s solder side that don’t look so nice. However, they don’t seem to affect the PSU’s performance.
May I please ask, why is there no review of the Leadex VII XG 850w? It’s highly recommended but I can’t find the review.
Thanks again for the wonderful work.
Do you think Super Flower Leadex VII Pro 850W is still a great option despite high In-rush current?
Other options I have are Deepcool PX850G, Corsair RM850e and XPG Core reactor II.
So what do you recommend ?
Yes it is a good option, because you won’t be able to drain that easily its bulk cap in normal conditions.
Full bridge: 4x main FETs
Hald bridge: 2x main FETs
I would leave it on the fan working mode, and let the fan adjust its temperature based on the thermal load.
Regarding the high inrush current
will the high inrush current damage both the PSU and external voltage stabilizer in the long run? I currently use this PSU alongside a 1000 VA stabilizer.
everything is affected, but note, high inrush currents exist ONLY if the bulk cap is completely drained, something not that easy.
I’m not really familiar with electricity,
does turning the PC off for days completely drain off the bulk capacitor?
Also, will you still rate leadex vii pro as good as leadex vii XG?
I was going to buy leadex vii XG since you rated it as the best overall performance, but it was out of stock in my country, so I bought the leadex vii pro
Usually not. The bulk cap usually keeps a charge unless the PSU is off for a significant period, week, or even months. The XG seems to have slightly higher performance but you won’t notice it. You made a very good choice to buy the Pro, no worries.
Is the only difference between this line and the XG line 3.0 vs 3.1 compatability?
they have hardware differences.
Hello, are these manufacturing differences for better or worse? in my country the leadex XG 850 and the leadex XP Pro 850 cost the same, after reviewing both and seeing the problems with the Pro, which one would you choose? Do you plan to review the leadex vii xp 1200 Pro?
The XP model. This 1200W model if they send it yes.
Based on your experience, in these models that come with fans with ECO or hybrid mode, do you recommend always using the fan on or having it work automatically based on temperature?
Hello, could there be an error in the characteristics? What is the correct full-bridge or hall-bridge topology?
thank you and greetings