Part Analysis
| General Data | |
| Manufacturer (OEM) | Helly Technology |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 2x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor MF73T-2 20/7 (20 ohm) & Relay |
| Bridge Rectifier(s) |
2x GBU15J (600V, 15A @ 100°C)
|
| APFC MOSFETs |
2x Oriental Semiconductor OSG65R099HT3ZF (650V, 25.3A @ 100°C, Rds(on): 99mOhm)
|
| APFC Boost Diode |
1x Sanan SDS065J010C3 (650V, 10A @ 155°C)
|
| Bulk Cap(s) |
1x TDK (420V, 1,000uF, 2,000h @ 105°C, EPCOS)
|
| Main Switchers |
2x FuXin Semiconductor FXN45N50T (500V, 16.7A @ 100°C, Rds(on): 0.20Ohm)
|
| Resonant Controller |
Champion CM6901T6X
|
| APFC Controller |
Champion CM6500UNX
|
| Topology |
Primary side: APFC, Half-Bridge & LLC Resonant converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 8x Huayi HYG009N04LS1C2 (40V,233A @ 100°C, Rds(on): 0.96mOhm) |
| 5V & 3.3V | DC-DC Converters: 2x XSEMI XP3NA3R4MT (30V, 46A @ 100°C, Rds(on): 3.4mOhm) & 2x Rectron Semiconductor RMN3N5R0DF (30V, 19.7A @ 70°C, Rds(on): 5mOhm) PWM Controller(s): 2x Anpec APW7073 |
| Filtering Capacitors | Electrolytic: 11x Ltec (2-5,000h @105°C, LXY) 3x Ltec (4-7,000h @105°C, LZG) 1x CS (3,000h @105°C, WE) Polymer: 21x Beryl BC, 4x Chengx (PC) |
| Supervisor IC | Weltrend WT7527RA (OVD, PGO, UVD, OCD) |
| Fan Model | Hong Hua HA1225H12F-Z (120mm, 12V, 0.58A, Fluid Dynamic Bearing Fan) |
| 5VSB | |
| Rectifier(s) |
P6SMB (220V, 1A) & 1x Dongke Semiconductor DK5V60R20S
|
| Standby PWM Controller |
Excelliance MOS EM8569C
|
As you can see, the modular sockets are installed directly on the main PCB; this way, energy losses are minimized since no interconnections are required between the modular and the main PCB. The heatsinks are large enough to handle the platform’s thermal loads, and there is plenty of room between the components for good airflow. This means the cooling fan won’t have to spin fast to remove the heat from the PSU’s internals.
The main transformer is surrounded by heatsinks that cool down the 12V FETs installed on the PCB’s business side. The only daughter-boards host the DC-DC converters that handle the minor rails. The design is contemporary, with a half-bridge topology and an LLC resonant converter on the primary side for lower energy losses. The primary side’s controllers are by Champion, and the APFC FETs are by Oriental Semiconductor, which I have met before on other platforms. Helly went with Chubese FETs to keep the cost down. The same goes for the majority of the capacitors on the secondary side. LTec didn’t have a great reputation with a quick search I made on the net, but I plan to check these capacitors to determine whether they are reliable.
The cooling fan, a vital part significantly affecting a PSU’s reliability, is provided by Hong Hua. It uses a fluid dynamic bearing to last a long under normal operating conditions. Lastly, the soldering quality is good enough and won’t create any performance or reliability issues.
Just bought this one for a new build.
The fan has a weird initial ramp up noise (grinding/bearing noise), then it quiets down 4-5 seconds after. Not sure if you had this issue while testing it. It can be a bit annoying since it’s 0RPM so you hear that ramp up motor/grind noise reasonable often even on idle.
Here is a recording I did for reference which I posted on their Reddit page.
https://www.reddit.com/r/lianli/comments/1mgbxg2/lian_li_1200w_edge_gold_fan_spin_up_noise/
nope this doesn’t look (sound) normal. The fan probably hits something during start-up or at least this is what it sounds like.
Got a replacement from Lian Li. The noise is still there but a bit better and lasts a shorter time. No obstructions.
Its like an engine revv up noise for the first 3 seconds, then the noise goes away. Not sure if its just a bad fan curve going from zero to max rpm, or just a cheapo fan. Either way I might get something else with an Eco switch so i can just leave the fan on rather than getting ramp ups.
Did some more digging, it looks like the Hong Hua fans are in some Seasonics and a few others. Apparently it doesn’t have a good reputation and now I know why. I actually found some testing you guys (Cybernetics) did on one of their fans and it rated it fairly well, so maybe it was just a bad batch?
I’ve emailed their rep asking them to look at this internally.
Just opted for this unit in preference to the 1200w Shift, largely due to the better cable quality and slightly better performance metrics. The shift uses Gen 5 cable connections. No mention of cable connections is mentioned in any review I’ve seen can I assume that these are gen 4 cables.
Please note that Gen 4/5 cables refer to Corsair units. Unless you check, you should never mix cables between different brand PSUs, even between PSU models.
Have you had a chance to check whether the secondary capacitors are reliable yet?
Hi! We need to find them new I am afraid to test them. Still trying to locate a good source to find Chinese caps (new)
Are there any better PSUs that include white sleeved cables?
Do we still need to concern about capacitor these days? Especially the japanese one? I read that Nippon-ChemiCon are now produced with Chinese Manufacture like ChengX that now make Rubycon and Nippon-ChemiCon. Does that mean they all now have the same quality?
Chemi-Con uses its own facilities in China, which are up to its standards.
Does Chemicon delegate production to a Chinese company that is not owned by them?
don’t have a clue about this. Will need to check it next time I am in China.
i;m sorry Aris it’s looks like Beryl BC polymer rather than APAQ
thank you, you are right.