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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) | RSY / Super Flower |
| Platform Model | Leadex Bronze |
| Primary Side | |
| Transient Filter | 5x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | NTC thermistor |
| Bridge Rectifier(s) | GBU1506 (600V, 15A @ 100°C) |
| APFC MOSFETs | 2x AOTF22N50 (500V, 15A @100°C, 0.26Ω) |
| APFC Boost Diode | 1x STTH8R06D (600V, 8A @ 100°C) |
| Hold-up Cap(s) | 1x Nippon Chemi-Con (400V, 470uF, 95°C, CE) |
| Main Switchers | 2x AOTF22N50 (500V, 15A @100°C, 0.26Ω) |
| APFC Controller | SF29603 & S9602 & ICE3PCS02G |
| Resonant Controller | SF29605 |
| Topology | Primary side: Half-bridge & LLC resonant controller Secondary side: Synchronous rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 4x A&O AOT240L (40V, 82A @ 100°C, 4.7mΩ @ 125°C) |
| 5V & 3.3V | DC-DC Converters: 4x A&O AON6516 (30V, 25A @ 100°C, 8mΩ) PWM Controller: 2x On Semiconductor NCP1587A |
| Filtering Capacitors | Electrolytics: Teapo (3000-6000h @ 105°C, SY) Polymers: Teapo |
| Supervisor IC | SF29605 & LM339A |
| Fan Model | S1282412H (120mm, 12V, 0.35A, Sleeve Bearing) |
| 5VSB Circuit | |
| Rectifier | Mospec S10C60C |
| Standby PWM Controller | 29604 |
Initially, the B3 family was manufactured by RSY. But EVGA informed us that its newest batches are rolling off of Super Flower's production lines. Although this is a truly modern platform, the OEM's component choices result in lower efficiency. This is why it's referred to as Leadex Bronze.
A half-bridge topology and LLC resonant converter are used on the primary side. Meanwhile, on the secondary side, we find synchronous rectification for the +12V rail and two DC-DC converters for generating the minor rails. All of the filtering capacitors come from one of Teapo's higher-end lines.
Really, the only component that doesn't jive with EVGA's five-year warranty is the sleeve bearing-based fan. In order to justify such comprehensive coverage, you'd want to see a rifle or fluid dynamic bearing used instead.
The following video shows the 650 B3’s internals.
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