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Corsair SF750 Platinum: Cybenetics Efficiency and Noise Level Certifications

This report details the efficiency and noise level certifications for the Corsair SF750 Platinum power supply unit, conducted by Cybenetics.

DUT Information

AttributeValue
BrandCorsair
Manufacturer (OEM)Great Wall
SeriesSF Platinum
Model NumberSF750 Platinum
Serial Number18414866000067140032
DUT Notes92mm Rifle Bearing Fan (NR092L)

DUT Specifications

AttributeValue
Rated Voltage (Vrms)100-240
Rated Current (Arms)10-5
Rated Frequency (Hz)47-63
Rated Power (W)750
TypeSFX
Cooling92mm Rifle Bearing Fan (NR092L)
Semi-Passive Operation✔ (Checkmark)
Cable DesignFully Modular

Power Specifications

RailAmpsWatts
3.3V20130
5V20750
12V62.512.5
5VSB2.53.6
-12V0.3-
Total Max. Power (W)750

Cables and Connectors

DescriptionCable CountConnector Count (Total)GaugeIn Cable Capacitors
ATX connector 20+4 pin (300mm)1116-18AWGNo
4+4 pin EPS12V (400mm)2216AWGNo
6+2 pin PCIe (400mm+100mm)2416AWGNo
SATA (100mm+120mm+120mm120mm)2818AWGNo
4 pin Molex (100mm+120mm+120mm)1318AWGNo
AC Power Cord (1380mm) - C13 coupler1116AWG-

Component Breakdown

The power supply utilizes a robust set of components for its primary and secondary sides, including:

  • Primary Side: Infineon IPZ60R060C7 APFC MOSFET, ROHM SCS306AP APFC Boost Diode, Nippon Chemi-Con hold-up capacitors, and 2x 60F2094 main switchers. The topology is a Half-Bridge & LLC Resonant Controller.
  • Secondary Side: Features 6x APower 4N1R8C-A +12V MOSFETs and DC-DC converters using Infineon PSMN2R0-30YLE. Filtering capacitors include Nippon Chemi-Con and Rubycon electrolytics, along with Nippon Chemi-Con and Nichicon polymers. The supervisor IC is Infinno IN1S429i-SCG, and the fan controller is PIC16F1824. The fan model is Corsair NR092L.
  • 5VSB Circuit: Utilizes a CSD18534 rectifier and a Texas Instruments TPS54231 step-down converter.

Results Summary

MetricValue
Temperature Range (°C / °F)30-32 / 86-89.6
Average Efficiency90.210%
Efficiency With 10W (≤500W) or 2% (>500W) Load -115V54.190%
Average Efficiency 5VSB83.081%
Standby Power Consumption (W) -115V0.0476897
Standby Power Consumption (W) -230V0.0747045
Average PF0.981
ErP Lot 3/6 Ready✔ (Checkmark)
(EU) No 617/2013 Compliance✔ (Checkmark)
Avg Noise Output26.20 dB[A]
Efficiency Rating (ETA)ETA-A
Noise Rating (LAMBDA)LAMBDA-A-

Test Equipment Used

The following equipment was used for testing:

  • Electronic Loads: Chroma 6314A x2, 63123A x6, 63102A, 63101A
  • AC Sources: Chroma 6530, Chroma 61604, Keysight AC6804B
  • Power Analyzers: N4L PPA1530 x2, N4L PPA5530
  • Oscilloscopes: Picoscope 4444 & 3424, Keysight DSOX3024A, Rigol DS2072A
  • Voltmeter: Keithley 2015 THD 6.5 Digit
  • Sound Analyzer: Bruel & Kjaer 2250-L G4
  • Microphone: Bruel & Kjaer Type 4955-A, Bruel & Kjaer Type 4189
  • Data Loggers: Picoscope TC-08 x2, Labjack U3-HV x2

Load Test Performance

The following tables detail the performance across various load conditions:

10-110% Load Tests

Test #12V5V3.3V5VSBDC/AC (Watts)EfficiencyFan Speed (RPM)PSU Noise (dB[A])Temps (In/Out)PF/AC Volts
14.387A1.973A1.961A0.994A74.40287.060%0<6.040.36°C0.941
212.038V5.069V3.361V5.029V85.46190.769%0<6.046.52°C115.05V
39.839A2.959A2.947A1.195A149.29091.788%0<6.040.67°C0.965
412.033V5.067V3.360V5.023V164.47391.788%0<6.047.57°C115.04V
515.693A3.454A3.424A1.395A224.79891.788%0<6.041.48°C0.973
612.031V5.066V3.358V5.017V244.91191.788%0<6.049.44°C115.04V
721.482A3.948A3.933A1.596A299.57792.039%0<6.041.93°C0.980
812.028V5.064V3.356V5.012V325.48892.039%0<6.050.47°C115.04V
926.935A4.938A4.915A1.799A374.55691.783%136313.242.23°C0.985
1012.031V5.064V3.355V5.005V408.09091.783%151618.152.15°C115.05V
1132.388A5.927A5.901A2.001A449.46491.415%151618.142.84°C0.989
1212.031V5.063V3.354V4.999V491.67491.415%151618.153.78°C115.04V
1337.878A6.917A6.893A2.204A524.78790.898%203327.543.44°C0.991
1412.030V5.061V3.352V4.992V577.33790.898%203327.554.73°C115.04V
1543.375A7.906A7.880A2.407A600.11890.240%269135.243.70°C0.992
1612.028V5.060V3.350V4.986V665.02490.240%269135.256.06°C115.04V
1749.237A8.404A8.362A2.409A674.64089.567%321040.044.59°C0.993
1812.026V5.059V3.348V4.983V753.22889.567%321040.058.12°C115.04V
1955.100A8.901A8.875A2.511A749.78588.769%372344.345.98°C0.994
2012.025V5.057V3.346V4.978V844.64988.769%372344.360.26°C115.03V
2161.359A8.903A8.881A2.513A825.00387.888%387944.746.74°C0.995
2212.024V5.056V3.345V4.975V938.70187.888%387944.762.50°C115.03V
CL10.141A16.005A16.000A0.000A136.60385.739%174421.942.00°C0.965
2312.043V5.067V3.363V5.032V159.32485.739%174421.952.82°C115.06V
CL262.514A1.000A1.000A1.000A765.14089.163%367843.845.16°C0.994
2412.025V5.060V3.346V5.003V858.13289.163%367843.860.64°C115.03V

20-80W Load Tests

Test #12V5V3.3V5VSBDC/AC (Watts)EfficiencyFan Speed (RPM)PSU Noise (dB[A])PF/AC Volts
11.195A0.492A0.475A0.198A19.45971.556%0<6.00.865
212.025V5.069V3.361V5.042V27.19481.721%0<6.0115.04V
32.458A0.985A0.983A0.397A39.85781.721%0<6.00.911
412.026V5.069V3.360V5.039V48.77281.721%0<6.0115.05V
53.655A1.479A1.455A0.596A59.35585.602%0<6.00.936
612.030V5.068V3.360V5.035V69.33885.602%0<6.0115.04V
74.918A1.973A1.963A0.795A79.78887.741%0<6.00.949
812.036V5.068V3.360V5.031V90.93687.741%0<6.0115.05V

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load11.3 mV11.3 mV5.4 mV7.0 mVPass
20% Load11.4 mV11.4 mV6.3 mV8.1 mVPass
30% Load8.7 mV13.4 mV8.5 mV8.9 mVPass
40% Load11.5 mV13.3 mV8.4 mV9.6 mVPass
50% Load13.4 mV15.5 mV9.8 mV10.5 mVPass
60% Load15.5 mV15.1 mV10.9 mV12.1 mVPass
70% Load17.6 mV17.1 mV11.9 mV14.4 mVPass
80% Load20.5 mV17.5 mV13.5 mV16.6 mVPass
90% Load22.4 mV17.9 mV14.5 mV18.8 mVPass
100% Load29.5 mV20.2 mV16.7 mV20.9 mVPass
110% Load32.5 mV21.3 mV17.7 mV23.3 mVPass
Crossload 117.3 mV18.0 mV15.5 mV16.7 mVPass
Crossload 229.4 mV18.5 mV11.6 mV21.6 mVPass

Efficiency and Noise Graphs Description

Efficiency Graph: This graph illustrates the power supply unit's efficiency across its entire operational range. The testing involved custom software to test thousands of load combinations.

Noise Graph: This graph displays the PSU's noise levels under various operational conditions, measured at an ambient temperature of 30-32°C. The X-axis represents the load on the +12V rail(s), and the Y-axis represents the load on the minor rails.

Efficiency Under High Ambient Temperature: This graph shows the PSU's efficiency at high ambient temperatures (37°C - 47°C) using 115V and 230V input, based on the 10-110% load regulation table.

5VSB Efficiency: This graph depicts the efficiency levels of the 5VSB rail with 115V and 230V input, measured at an ambient temperature of 34°C - 36°C.

5VSB Efficiency Tables

5VSB Efficiency - 115V (ERP LOT 3/6 & CEC)

Test #5VSBDC/AC (Watts)EfficiencyPF/AC Volts
10.045A0.22765.418%0.049
25.045V0.34770.872%0.088
30.090A0.45584.926%0.304
45.044V0.64284.926%0.304
50.550A2.77284.926%0.304
65.038V3.26484.926%0.304
71.000A5.03384.674%0.387
85.033V5.94484.674%0.387
91.500A7.54083.379%0.432
105.026V9.04383.379%0.432
112.500A12.53583.439%0.472
125.013V15.02383.439%0.472

5VSB Efficiency - 230V (ERP LOT 3/6 & CEC)

Test #5VSBDC/AC (Watts)EfficiencyPF/AC Volts
10.045A0.22857.868%0.017
25.045V0.39465.280%0.030
30.090A0.45582.746%0.132
45.044V0.69782.746%0.132
50.550A2.77282.746%0.132
65.038V3.35082.746%0.132
71.000A5.03384.277%0.208
85.032V5.97284.277%0.208
91.500A7.54083.974%0.269
105.026V8.97983.974%0.269
112.500A12.53484.047%0.338
125.013V14.91384.047%0.338

Vampire Power

The Vampire Power test measures the power consumption of the PSU when it is in standby mode. The graph shows the power draw over time, indicating minimal consumption.

Hold-Up Time & Power OK Signal (230V)

ParameterValue (ms)
Hold-Up Time11.60
AC Loss to PWR_OK Hold Up Time8.80
PWR_OK Inactive to DC Loss Delay2.80

Certifications

The power supply has achieved the following certifications from Cybenetics:

  • ETA: ETA-A
  • LAMBDA: LAMBDA-A-

Visual representations of the PSU (top side) and its power specifications label are included in the original document.

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