Teardown & Component Analysis
Before proceeding with this page we strongly encourage you to a look at our PSUs 101 article, which provides valuable information about PSUs and their operation, allowing you to better understand the components we're about to discuss.
|Transient Filter||4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x MPS HF81 (X Capacitor Bleeder)|
|Inrush Protection||NTC thermistor & relay|
|APFC MOSFETs||2x Infineon IPA60R125P6 (650V, 19A @ 100°C, 0.125Ω)|
|APFC Boost Diode||1x Hestia H2S060H006 (600V, 6A @ 152°C)|
|Hold-up Cap(s)||1x Chemi-Con (400V, 680uF, 2000h @ 105°C, KMW)|
|Main Switchers||2x Infineon IPP65R150CFD (700V, 14.2A @ 100°C, 0.15Ω)|
|APFC Controller||Champion CM6502S|
|Resonant Controller||Champion CM6901|
|Topology||Primary side: Half-bridge & LLC resonant controller Secondary side: Synchronous rectification & DC-DC converters|
|+12V MOSFETs||6x FETs|
|5V & 3.3V||DC-DC converters: 2x TI CSD87355Q5D (30V, 45A @ 125°C) PWM controller: 2x APW7073|
|Filtering Capacitors||Electrolytics: Nippon Chemi-Con (4-10,000 @ 105°C, KY), Teapo (1-3000h @ 105°C, SC) Polymers: APAQ|
|Supervisor IC||Weltrend WT7527V (OVP, UVP, OCP, SCP, PG)|
|Fan Model||Globe Fan RL4Z S1352512H (12V, 0.33A, 1550 RPM, Hydro Dynamic Bearing)|
|Rectifier||1x PFR10L60CT SBR (60V, 10A)|
|Standby PWM Controller||TinySwitch-III TNY280PN|
This looks like a new platform from HEC, featuring a specially-designed main transformer connected through bus bars to a daughterboard that holds the +12V FETs. In this way, energy losses are minimized.
Polymer capacitors are mostly used for ripple filtering, and it would have been better if the few sub-par Teapo SC caps were replaced by Chemi-Con KY or KZE ones. The soldering quality is average compared to platforms from CWT or Seasonic.
Again, the cooling fan uses a HDB bearing according to its maker, so Cougar claims that it should last for at least 150,000 hours.
We're pleased to see a proper rectifier IC for the -12V rail instead of a plain diode. This rectifier offers better protection, especially against overloads. We've had the misfortune of destroying too many PSUs by overloading the -12V rail.
The following video shows the GX-F 750’s internals.
MORE: Best Power Supplies
MORE: All Power Supply Content