Part Analysis
| General Data | |
| Manufacturer (OEM) | HEC |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 3x X caps, 2x CM chokes, 1x MOV, 1x Power Integrations CAP200DG (Discharge IC) |
| Inrush Protection | NTC Thermistor SCK-056 (5 Ohm) & Relay |
| Bridge Rectifier(s) |
2x GBU15KL (800V, 15A @ 100°C)
|
| APFC MOSFETs |
2x Great Power GP36S60YERD
|
| APFC Boost Diode |
1x CREE C6D08065A (650V, 8A @ 155°C)
|
| Bulk Cap(s) |
1x Teapo (400V, 470uF, 2,000h @ 105°C, LS)
|
| Main Switchers |
2x Infineon IPA60R120P7 (650V, 16A @ 100°C, Rds(on): 0.120Ohm)
|
| APFC Controller |
Champion CM6500UN & CM03AX
|
| Resonant Controller | Champion CM6901T6X |
| Topology |
Primary side: APFC, Half-Bridge & LLC Resonant converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | no info |
| 5V & 3.3V | DC-DC Converters: 4x Potens Semiconductor PDC3906X (30V, 51A @ 100°C, Rds(on): 5.5mOhm) PWM Controller(s): 1x ANPEC APW7159C |
| Filtering Capacitors | Electrolytic: 6x Teapo (1-3,000h @ 105°C, SC), 2x Nippon Chemi-con (2-5,000h @ 105°C, KZE) 1x Rubycon (4-10,000h @ 105°C, YXF) Polymer: 6x Teapo, 16x Uni-Con |
| Supervisor IC | Weltrend WT7527RT (OCP, OVP, UVP, SCP, PG) |
| Fan Controller | Nuvoton M031FB0AE |
| Fan Model | Hong Hua HA1225H12F-Z (120mm, 12V, 0.58A, Rifle Bearing Fan) |
| 5VSB Circuit | |
| Rectifier |
1x PS1060L SBR (60V, 10A)
|
| Standby PWM Controller | Excelliance MOS EM8569D |
The PCB is small and densely populated. HEC used two vertical boards to save space, one hosting the DC-DC converters that generate the minor rails and one with the FETs that regulate the 12V rail. The heatsinks are large enough to meet the unit’s thermal needs without using excessive active cooling, hence keeping noise output low.
The 12V board is next to the main transformer to minimize energy losses. The platform’s design is typical: a half-bridge topology on the primary side and an LLC resonant converter. The secondary uses a synchronous rectification scheme for the 12V rail, which feeds a pair of VRMs to generate the minor rails. The soldering quality is good, and the parts that HEC used are of good quality, but they do not belong to top manufacturers to keep the production cost under control. The cooling fan is by Hong Hua and uses a rifle bearing instead of a fluid dynamic one. There have to be some differences between the higher-end RMx line and the RMe one, or else users won’t opt to buy the more expensive RMx models.
Hi Aris,
I had a general question about PSUs and don’t know where to post it so I’ll just put it here.
For most of the other PC components there is this “world of information” that you can use to make decisions on what to buy but also when to buy. Either news, announcements, rumors, roadmaps etc , but for PSUs it’s mostly silent, especially for non flashy brands.
I’m looking for a new PSU 1000-1200W. I bought the Leadex II a long time ago, by sheer chance with no research and it turned out really good and was looking to keep consistent. I can’t find the 1200W XP version around, only the 1000W XP or Gold but they both seem just decent from the reviews and not top of the line like the 1200W version.
Also can’t find anywhere near the FSP Hydro Ti Pro. All the shops I called said they have stocks when a new unit comes out and slowly go out, and it’s the same thing for most of the top line units. Mid range units are in stock everywhere.
I feel like I’m chasing blind.
So how often do manufacturers launch new lines? It is wise to just buy whatever you find available at a given time or is it worth waiting? How do you know what is expected to come? Could a new ATX spec significantly change the scene?
Thank you!