Topology and teardown
The platform is provided by Andyson and uses a modern design with a full bridge topology on the primary side and an LLC resonant converter for lower energy losses. On the secondary side, eight Infineon FETs regulate the 12-volt rail, which feeds a pair of DC-DC converters that generate the auxiliary rails. The build quality is good, and familiar components are used throughout, except on the primary side where the APFC converter and primary topology use Wayon FETs, which are not as well known as Infineon’s. The quality of the solder joints is not so good, there are some unclean solder joints on the back of the board, and the surface of the board is generally not so good. This has no impact on performance and reliability, but is more of an aesthetic issue for us picky testers.
The fan comes from Hong Hua, a company that dominates the PSU market, and for good reason. It offers good quality products at good prices. Due to the compact dimensions of the PSU, a 120mm fan was used instead of a larger fan that would provide the same airflow at lower speeds, reducing the average noise level.
Component overview
Finally, I have listed all the components used for interested readers:
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 | NTC Thermistor SCK205R0 (5 Ohm @ 25°C) & Relay |
Bridge Rectifier(s) |
2x GBJ2510 (700V, 25A @ 100°C)
|
APFC MOSFETs |
2x Wayon WML53N60C4 (600V,26A @ 100°C, Rds(on): 0.07Ohm)
|
APFC Boost Diode |
1x CREE C3D10060A (600V, 10A @ 152°C)
|
Bulk Cap(s) |
2x Nippon Chemi-Con (420V, 560uF each or 1120uf combined, 2000h @ 105°C, KMR)
|
Main Switchers |
4x Wayon WML28N65F2 (650V, 13A @ 100°C, Rds(on): 0.19Ohm)
|
APFC Controller |
Champion CM6500UNX
|
Resonant Controller | Champion CU6901VPA |
Topology |
Primary side: APFC, Full-Bridge & LLC converter
Secondary side: Synchronous Rectification & DC-DC converters |
Secondary side | |
12V MOSFETs | 8x Infineon BSC014N04LS (40V, 125A @ 100°C, Rds(on): 1.4mOhm) |
5V & 3.3V | DC-DC Converters: 6x Nexperia PSMN4R0-30YLD (30V, 95A @ 25°C, Rds(on): 4mOhm) PWM Controller(s): ANPEC APW7159C |
Filtering Capacitors | Electrolytic: 7x Nippon Chemi-Con (2-5,000 @ 105°C, KZE), 1x Nippon Chemi-Con (10,000 @ 105°C, LE) 4x Rubycon (6-10000 @ 105°C, ZLH), 1x Teapo (3-5,000 @ 105°C, TX) Polymer: 26x Polycap, 5x FPCAP 1x Nichicon HE |
Supervisor IC | Weltrend WT7527 (OCP, OTP, OVP, UVP, SCP, PG) |
Fan Controller / Micro Controller | Weltrend WT51F104 |
Fan Model | Hong Hua HA1225H12F-Z (120mm, 12V, 0.58A, Fluid Dynamic Bearing) |
5VSB/12VSB Circuit | |
Rectifier |
PJ335M
|
Standby PWM Controller | Excelliance MOS EM8569C |
- 1 - Introduction, overview and technical data
- 2 - Unboxing, cables and protective circuits
- 3 - Teardown: Topology, components, processing
- 4 - Load Regulation, Ripple Suppression
- 5 - Transient Response
- 6 - Hold-Up Time, Timings, Inrush-Current
- 7 - Average Efficiency and PF
- 8 - Noise and fan speed
- 9 - Summary and conclusion
16 Antworten
Kommentar
Lade neue Kommentare
Veteran
Neuling
Veteran
Veteran
Veteran
Mitglied
Veteran
Mitglied
Veteran
1
Urgestein
Veteran
Urgestein
Veteran
Neuling
Veteran
Alle Kommentare lesen unter igor´sLAB Community →