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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.
| General Data | |
|---|---|
| Manufacturer (OEM) | HEC/Compucase |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x MPS HF81 (X Capacitor Bleeder) |
| Inrush Protection | NTC thermistor & relay |
| Bridge Rectifier(s) | 1x |
| 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 |
| Secondary Side | |
| +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) |
| 5VSB Circuit | |
| Rectifier | 1x PFR10L60CT SBR (60V, 10A) |
| Standby PWM Controller | TinySwitch-III TNY280PN |
| -12V Circuit | |
| Rectifier | KIA7912PI |
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.
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