Customer: Cybenetics LTD
Syrou 6, Latsia, 2231, Nicosia Cyprus
Syrou 6, Latsia, 2231, Nicosia Cyprus
Whisper 550W
| Electronic Loads | Chroma 63601-5 x2 Chroma 63600-2 Chroma 63640-80-80 x10 Chroma 63610-80-20 |
| AC Sources | Chroma 6530, APM SP300VAC4000W-P, GW Instek ASR-3500 |
| Power Analyzers | Rohde & Schwarz HMC8015 & NPA701 |
| Oscilloscopes | Picoscope 4444, Siglent SDS2104X PLUS |
| Sound Analyzer | Bruel & Kjaer 2270 G4 |
| Microphone | Bruel & Kjaer Type 4955-A |
| Temperature Logger | Picoscope TC-08 |
| Tachometer | UNI-T UT372 |
| Multimeters | Keysight 34465A |
| EMI Analyzer | TekBox TBMR-110M-EU |
| Isolation Transformer | 4kVA |
| UPS | FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA |
| Testing Methodology | Cybenetics PSU Test Protocol |
| Voltage | 115V | 230V |
|---|---|---|
| Efficiency (>1450 Load Combinations) | 88.803% | 91.170% |
| Efficiency Graphs |  |  |
| Average PF (>1450 Load Combinations) | 0.981 | 0.921 |
| 12V Step | - | |
| 5V/3.3V Step | - | |
| Standby Power Consumption | 0.0500W | 0.0829W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 78.294% | 77.232% |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 15.37dBA | 15.74dBA |
| Noise Graphs |  |  |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 0.000% |
| Hold Up Time | 13.30ms |
| Power OK | 12.50ms |
| Power OK to DC Loss | 0.80ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 0.000 | |||
| 10ms | 0.000 | |||
| 1ms | 0.000 | |||
| 0.1ms | 0.000 |
| Product Identification Details | |
| Brand | Bitfenix |
| Model | Whisper 550W |
| OEM | Channel Well Technology |
| Serial Number | 707Q00065 |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 8 |
| Rated Frequency (Hz) | 47-63 |
| Rated Power (W) | 550 |
| Operating Temperature (Continuous Full Load) (°C) | |
| Type | ATX12V |
| Cable Design | Fully Modular |
| Warranty | - |
| Cybenetics | |
| Dimensions (W x H x D) | |
| Weight | |
| Cooling | 135mm Hydro Dynamic Bearing Fan (DF1352512SEMN) |
| Semi-Passive Operation | ✗ |
| Cybenetics Testing Information | |
| Lab ID | 137 |
| Date of receipt | Mar 28, 2018 |
| Testing Date | Apr 4, 2018 |
| Report Issued Date | Apr 7, 2018 |
| Engineer Name | - |
| Authorized By the Laboratory Technical Manager | Aristeidis Bitziopoulos |
| Signature |  |
| Modular Cables | |||
| Description | Cable Count | Connector Count (Total) | Gauge |
| ATX connector 20+4 pin (610mm) | 1 | 1 | 18AWG |
| 4+4 pin EPS12V (650mm) | 1 | 1 | 18AWG |
| 6+2 pin PCIe (650mm) | 2 | 2 | 18AWG |
| SATA (500mm+150mm+150mm+150mm) | 2 | 8 | 18AWG |
| 4 pin Molex (500mm+150mm+150mm+150mm) | 1 | 4 | 18AWG |
| General Data | |
| Manufacturer (OEM) | CWT |
| Platform Model | GPU |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x CAP004DG |
| Inrush Protection | NTC Thermistor & Relay |
| Bridge Rectifier(s) | 1x GBU806 (600V, 8A @ 100°C) |
| APFC MOSFETS | 2x Champion GP18S50G (500V, 28A @ 150°C, 0.19 Ohm) |
| APFC Boost Diode | 1x STMicroelectronics STTH8S06D (600V, 8A @ 175°C) |
| Hold-up Cap(s) | 1x Nichicon (400V, 390uF, 2000h @ 105°C, GG) |
| Main Switchers | 2x Silan Microelecronics SVF20N50F (500V, 12.6A @ 100°C, 0.27Ohm) |
| APFC Controller | Champion CM6502S & CM03X Green PFC controller |
| Switching Controller | Champion CM6901 |
| Topology | Primary side: Half-Bridge & LLC Resonant Converter Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETS | 6x Sinopower SM4021NAKP (40V, 100A @ 100°C, 1.6mΩ) |
| 5V & 3.3V | DC-DC Converters: 2x UBIQ QM3006D FETs (30V, 57A @ 100°C, 5.5mΩ), 2x UBIQ QM3004D FETs (30V, 40A @ 100°C, 8.5mΩ) PWM Controller: ANPEC APW7159C |
| Filtering Capacitors | Electrolytics: Nippon Chemi-Con (105°C, KY series, KZE series, KMG series), Nichicon (105°C) Polymers: FPCAP (Japan) |
| Supervisor IC | Sytronix ST9S429-PG14 (OCP [2x 12V channels, OVP, UVP, PG) & Weltrend WD7518D (OCP [2x 12V channels], SCP) |
| Fan Model | Martech DF1352512SEMN (135mm, 12V, 0.45A, Fluid Dynamic Bearing) |
| 5VSB Circuit | |
| Standby PWM Controller | TinySwitch-LT TNY177PN (18W Peak) |
| Photos |  |  |
| Top side | Power specifications label |
F.1 General Statement
Measurement uncertainty associated with the reported results was evaluated and estimated in accordance with JCGM 100:2008 (Guide to the Expression of Uncertainty in Measurement — GUM) and ISO/IEC 17025:2017, Clauses 7.6 and 7.2.
The uncertainty budget accounts for all significant identified contributors arising from the measurement process, instrumentation, test conditions, and operator interaction.
The reported expanded uncertainty U is obtained by multiplying the combined standard uncertainty uc by a coverage factor k = 2, corresponding to a confidence level of approximately 95 %, assuming a normal probability distribution.
Unless otherwise stated, the reported uncertainty applies only to the specific measurements performed and does not include long-term drift, aging effects, or future environmental changes.
F.2 Expanded Measurement Uncertainty by Measurement Type
| Measurement | Expanded Uncertainty U (k=2, norm) |
| Efficiency | ±0.18% |
| Timings | ±0.48ms |
| Power Excursions (Transient Response) | ±0.1V |
| Conducted EMI Emissions (150 kHz – 30 MHz) | ±2.35 dBμV |
| Noise Output | ±1.23 dB |