Part Analysis
| General Data | |
| Manufacturer (OEM) | Shenzhen Xinweiye Technology |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor MF72 10D-20 (10 Ohm) & Relay |
| Bridge Rectifier(s) |
2x GBU25KH (800V, 25A @ 25°C)
|
| APFC MOSFETs |
2x Way-On WMJ53N60F2 (600V, 26A @ 100°C, Rds(on): 0.078Ohm)
|
| APFC Boost Diode |
1x Maplesemi MSNP10065G1 (650V, 10A @ @ 135°C)
|
| Bulk Cap(s) | |
| Main Switchers |
2x Way-On WMJ36N65F2 (650V, 20A @ 100°C, Rds(on): 0.11Ohm)
|
| IC Driver |
1x Novosense NSi6602
|
| Resonant Controller |
Champion CM6901X
|
| APFC Controller | |
| Topology |
Primary side: APFC, Half-Bridge & LLC Resonant converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 6x Vishay SiR638DP (40V, 50.2A @ 70°C, Rds(on): 0.00088Ohm) |
| 5V & 3.3V | DC-DC Converters: 4x Way-On WMO80N03T1 (30V, 50.6A @ 100°C, Rds(on): 5mOhm) PWM Controller(s): Anpec APW7159C |
| Filtering Capacitors | Electrolytic: 4x Nippon Chemi-con (2-5,000h @105°C, KZE) 3x Nippon Chemi-con (@105°C, W) 1x Nippon Chemi-con (5-6,000h @105°C, KZH) 1x Nippon Chemi-con (4-10,000h @105°C, KYA) 2x Rubycon (6-10,000h @105°C, YXG) 2x Rubycon (6-10,000h @105°C, ZLH) Polymer: 6x CapXon (PS), 33x Chemic-con (PXG) |
| Supervisor IC | GRENERGY GR8329E (OVP, UVP, OCP, ) |
| Fan Model | Hong Hua HA13525H12F-Z (135mm, 12V, 0.50A, Fluid Dynamic Bearing Fan) |
| 5VSB | |
| Rectifier |
1x SB1045L SBR (45V, 10A)
|
| Standby PWM Controller |
Chipown PN8141
|
The OEM is Shenzhen Xinweiye Technology, and the platform features a clean design with ample room for adequate cooling, despite its small PCB. The main transformer is compact, occupying minimal space. Right next to it, the vertical PCB hosts the heatsinks and the power transfer traces to the 12V FETs, to drastically reduce the distance and, consequently, power losses. The capacitors on the secondary side are clear, allowing for unobstructed airflow, which boosts their lifetime due to the lower operating temperatures. The DC-DC converters handling the minor rails are also installed on a daughter board, at the side of the main PCB.
The transient filtering stage has all the necessary parts to block incoming and outgoing EMI emissions. Typically, it starts at the AC receptacle and continues on the main PCB.
There is an MOV to protect from voltage surges and an NTC thermistor with a resistance of 10 ohms. Moreover, a bypass relay supports the NTC thermistor.
The two GBU25KH parallel bridge rectifiers can handle up to 50A together, so they are more than enough to cover this platform’s needs.
The APFC converter uses two Way-On WMJ53N60F2 FETs and one Maplesemi MSNP10065G1 boost diode. The bulk caps are by Nippon Chemi-con and offer a combined capacity of 1150uF. They are rated for 2,000 h at 105 °C.
The APFC controller is a Champion CM6500UNX. It is supported by a Champion CM03X, which reduces vampire power consumption.
The two InfWay-On WMJ36N65F2 primary switching FETs are installed in a half-bridge topology, and an LLC resonant converter is used for higher efficiency.
The LLC resonant controller is a Champion CM6901X.
The PSU’s main transformer.
Six Vishay SiR638DP FETs regulate the 12V rail. They are installed on the solder side of the main PCB, and a vertical PCB on the other side transfers power to them, and also assists in their cooling.
Two DC-DC converters generate the minor rails.
Chemi-Con and Rubycon provide the electrolytic filtering capacitors. CapXon and Chemi-Con make the polymer caps.
You can find more information about capacitor performance and other specs below:
The supervisor controller is a GRENERGY GR8329E.
The standby PWM controller is a Chipown PN8141, and the secondary side rectifier is an SB1045L.
Many polymer caps at the face of the modular panel form an extra ripple-filtering layer.
The soldering quality is ok.
The cooling fan is a Hong Hua HA13525H12F-Z, utilizing a fluid dynamic bearing.
Would you go for this one or the NZXT C1200 3.1?
Thank you so much for this! I’ve been waiting for this review forever haha. One question: for your note on the lack of protection feature “The matter that Montech needs to take into account is the unit’s protection features, where I noticed some unusual settings in the over current protection on the minor rails that need to be corrected accordingly.”, what type of users/use cases will need to pay attention to this and may potentially want to opt for a unit with better protection? Thanks.
I am afraid there is not much a user can do to avoid issues with not properly tuned protection features. There is no way to constantly monitor the PSU or avoid situations where a rail can be overloaded by a part malfunction, for instance. This is why I pay so much attention to protection features.
Thanks for the response. That is *slightly* concerning then haha. Would you have any insights regarding the Super Flower Leadex III 1000 Watt unit? It’s now this 1200W Montech unit for $130 or that 1000W Leadex III unit for $110 for me. $20 difference. Great deal on both. I know you did a review on the 1300W unit and that one also did not seem to have flying colors with it so I guess it’s time I pick my poison haha. Thanks.
Leadex units are made by SF itself, not from another OEM, so typically they are pretty good PSUs. About the protection features on this specific unit, not sure though until l check it.
Would you just err on the safe side and get a Corsair RM850x Shift then? It is also in the same price range for me. I was interested in these 1000W+ units because of their prices, but if neither the Montech Century II nor Super Flower Leadex III 1000W ATX 3.1 have solid protection features, I’d rather get a less wattage unit for better protection. I only have a 5070 Ti. Thanks.
Thank you for the reviews.