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.
|Manufacturer (OEM)||RSY / Super Flower|
|Platform Model||Leadex Bronze|
|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|
|Topology||Primary side: Half-bridge & LLC resonant controller Secondary side: Synchronous rectification & DC-DC converters|
|+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)|
|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.
MORE: Best Power Supplies
MORE: All Power Supply Content