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Teardown & Component Analysis

Before proceeding with this page we strongly encourage you to a look at this article, which will provide you valuable information about PSUs and their operation, allowing you to understand better the information given below.

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General Data
Manufacturer (OEM)	FSP
Platform Model	No info (platform exclusively used by be quiet!)
Primary Side
Transient Filter	4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush Protection	NTC thermistor & relay
Bridge Rectifier(s)	2x GBJ2506 (600V, 25A @ 100°C)
APFC MOSFETs	3x STMicroelectronics STF28N60M2 (600V, 14A @ 100°C, 0.15Ω)
APFC Boost Diode	1x ROHM SCS308AP (600V, 8A @ 135°C)
Hold-up Cap(s)	2x Nichicon (420V, 470uF, 3000h @ 105°C, GN)
Main Switchers	2x STMicroelectronics STF33N60M2 (650V, 16A @ 100°C, 0.125Ω)
APFC Controller	Infineon ICE2PCS02
Resonant Controller	Champion CM6901
Topology	Primary side: Half-bridge & LLC resonant controller Secondary side: Synchronous rectification & DC-DC converters
Secondary Side
+12V MOSFETs	6x Toshiba TPHR85 04PL (SOP Advance Series, 40V, 150A @ 25°C, 0.85Ω)
5V & 3.3V	DC-DC Converters: 6x DMN3009SK3 (30V, 60A @ 70°C, 5.5mΩ) PWM Controller: 1x Anpec APW7159C
Filtering Capacitors	Electrolytics: Nippon Chemi-Con (1-5000 @ 105°C, KZE), Rubycon (6-10,000 @ 105°C, ZLH), Rubycon (3-6000 @ 105°C, ZLH), Rubycon (4-10,000 @ 105°C, YXF) Polymers: FPCAP, Chemi-Con
Supervisor IC	Weltrend WT7579 (OVP, UVP, SCP, PG)
Fan Model	BQ SIW3-13525-HF-26 (135mm, 12V, 0.56A, 2600 RPM, fluid dynamic bearing)
5VSB Circuit
Rectifier	1x DMN6040SK3 (30V, 13A @ 100°C, 40mΩ)
Standby PWM Controller	Power Integrations InnoSwitch-EP INN2603K

Straight Power 11 PSUs use an FSP platform that's currently only available to be quiet!. Besides the high soldering quality and clean design, what catches our eyes most is FSP's choice of bulk capacitors. We're not used to seeing bulk caps with 3000-hour lifetimes, even in higher-end PSUs. It's much more common to find 2000-hour caps. A number of polymer caps on the secondary side, along with electrolytic caps from reputable brands, are a good indication of this platform's expected reliability over time.

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