Part Analysis
| General Data | |
| Manufacturer (OEM) | Andyson |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor SCK 056 (5 ohm) & Relay |
| Bridge Rectifier(s) |
2x GBU1506 (800V, 15A @ 100°C)
|
| APFC MOSFETs |
2x Perfect PWE120N65SFMF (650V, 20A @ 100°C, Rds(on): 120mOhm)
|
| APFC Boost Diode |
1x SID8P65
|
| Bulk Cap(s) |
1x Nippon Chemi-con (400V, 680uF, 2,000h @ 105°C, KMR)
|
| Main Switchers |
2x Perfect PWE120N65SFMF (650V, 20A @ 100°C, Rds(on): 120mOhm)
|
| Resonant Controller |
Champion CM6901T6X
|
| APFC Controller | |
| Topology |
Primary side: APFC, Half-Bridge & LLC Resonant converter
Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 6x |
| 5V & 3.3V | DC-DC Converters: 4x WayOn WMO190N03TS (30V, 120A @ 100°C, Rds(on): 2.8mOhm) PWM Controller(s): 1x ANPEC APW7164 |
| Filtering Capacitors | Electrolytic: 15x Jun Fu (2,000h @105°C, WG) Polymer: 6x Polycap |
| Supervisor IC | Esthome EST.7630FS |
| Fan Model | Globe Fan S1202512M (120mm, 12V, 0.30A, Rifle Bearing Fan) |
| 5VSB | |
| Rectifier | |
| Standby PWM Controller |
Esthome EST.3026M
|
The OEM is Andyson. The PCB is small but not overloaded with parts, despite the absence of a modular board, which typically hosts a large number of capacitors for an extra ripple filtering layer. The primary heatsink is large, but there are no large heatsinks on the unit’s secondary side. The only heatsinks on the secondary side are those installed on the board that holds the 12V FETs. Moreover, the VRMs generating the minor rails are not located on a vertical board, as is usually the case, but are installed directly on the main PCB, close to the fixed cables, to minimize energy losses. The overall build quality suggests an affordable product, evoking memories of older times, despite the platform’s contemporary design featuring a half-bridge topology and an LLC resonant converter on the primary side. On the secondary side, we find the typical: a synchronous rectification scheme for the 12V rail and a pair of VRMs for the minor rails.
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).
There is an MOV to protect from voltage surges and an NTC thermistor with a resistance of 5 ohms. Moreover, a bypass relay supports the NTC thermistor.
The two GBU1506 parallel bridge rectifiers can handle a combined current of up to 30A.
The APFC converter uses two Perfect PWE120N65SFMF FETs and one SID8P65 boost diode. Nippon Chemi-con manufactures the bulk capacitor. Its capacity is 680 μF, and it is rated for 2,000 h at 105 °C. It would be nice if its voltage rating were at 420V since 400V is too close to the APFC’s DC bus voltage (approximately 380V DC).
The APFC controller is a Champion CM6500UNX. It is supported by a Sync Power SPN5003, which reduces vampire power consumption.
The two Perfect PWE120N65SFMF 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 CM6901T6X.
The PSU’s main transformer. It comes in direct contact with the PCB holding the 12V FETs, for decreased power losses.
Six FETs regulate the 12V rail. I was unable to identify them since Andyson has removed their markings. I don’t know why they do this, but it makes my life difficult! As you can see in the photo above, there are two empty spots for the 1000W version of this platform.
Two DC-DC converters generate the minor rails. They use four WayOn WMO190N03TS FETs. The PWM controller is an ANPEC APW7164.
Jun Fu provides the electrolytic filtering capacitors. I must admit that I am not particularly excited about this cap choice. There are also some polymer caps on the PCB.
You can find more information about capacitor performance and other specs below:
The standby PWM controller is an Esthome EST.3026M, and the secondary side rectifier is a Chongqing Pingwei PS1045L SBR.
The supervisor IC is an Esthome EST.7630FS.
The soldering quality is mediocre to bad in some spots. Andyson doesn’t have the high-end equipment that some other, much larger OEMs have. Still, we need to support smaller OEMs; otherwise, the market will be limited, and prices will skyrocket.
The cooling fan is a Globe Fan S1202512M, which claims to have an ICB bearing. This triggered my curiosity to break it apart (literally) and check on its bearing.
I found a plain rifle bearing. I didn’t expect something better in this category.
