TX550+
| 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) | - | 87.111% |
| Efficiency Graphs | ![]() | ![]() |
| Average PF (>1450 Load Combinations) | - | 0.947 |
| 12V Step | 5.00W | |
| 5V/3.3V Step | 2.00W | |
| Standby Power Consumption | - | 0.0870W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | - | 80.939% |
| Conducted Emissions EN 55032 & CISPR 32 (48W) | Passed | |
| Conducted Emissions Graphs | ![]() | ![]() |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | - | 34.74dBA |
| Noise Graphs | ![]() | ![]() |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | - |
| Hold Up Time | 17.40ms |
| Power OK | 13.80ms |
| Power OK to DC Loss | 3.60ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 12.088 | 5.048 | 3.281 | 5.128 |
| 10ms | 11.907 | 5.025 | 3.263 | 5.109 |
| 1ms | 11.852 | 5.019 | 3.255 | 5.103 |
| 0.1ms | 11.844 | 5.041 | 3.270 | 5.122 |
| Product Identification Details | |
| Brand | TEXTORM |
| Model | TX550+ |
| OEM/ODM | HEC |
| Serial Number | - |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 220-240 |
| Rated Current (Arms) | 4 |
| Rated Frequency (Hz) | 50-60 |
| Rated Power (W) | 550 |
| Operating Temperature (Continuous Full Load) (°C) | 0 - 40 |
| Type | ATX12V |
| Cable Design | Fixed cables |
| Warranty | No Info |
| Cybenetics | |
| Dimensions (W x H x D) | 150 x 86 x 140mm |
| Weight | 1.66 kg (3.65 lb) |
| Cooling | 120mm Rifle Bearing Fan (EFS-12E12H) |
| Semi-Passive Operation | ✗ |
| Cybenetics Testing Information | |
| Lab ID | TX55003376 |
| Date of receipt | Jul 15, 2026 |
| Testing Date | Jul 29, 2026 |
| Report Issued Date | Aug 3, 2026 |
| DUT Notes | The peripheral power cables use 20 AWG wire, which is thinner than the 18 AWG minimum specified in the ATX Power Supply Design Guide for peripheral/SATA connectors. |
| Engineer Name | Ioannis Kalyviotis |
| Authorized By the Laboratory Technical Manager | Aristeidis Bitziopoulos |
| Signature | ![]() |
| Captive Cables | ||||
| Description | Cable Count | Connector Count (Total) | Gauge | Cable Type |
| ATX connector 20+4 pin (550mm) | 1 | 1 | 18AWG | Tinned Copper |
| 4+4 pin EPS12V (600mm) | 1 | 1 | 18AWG | Tinned Copper |
| 6+2 pin PCIe (500mm+120mm) | 1 | 2 | 18AWG | Tinned Copper |
| SATA (410mm+120mm) | 2 | 4 | 20AWG | Tinned Copper |
| 4-pin Molex (410mm+120mm+120mm) | 1 | 3 | 20AWG | Tinned Copper |
| Over Temperature Protection | ✓ |
| Short Circuit Protection | ✓ |
| Surge Protection | ✓ |
| Inrush Current Protection | ✓ |
| Fan Failure Protection | ✗ |
| No Load Operation | ✓ |
| Cooling | 120mm Rifle Bearing Fan (EFS-12E12H) |
| General Data | |
| Manufacturer (OEM) | HEC |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 3x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor SCK152R58MGY042 (2.5Ohm, 8A) |
| Bridge Rectifier | 1x GBU8K (800V, 8A @ 100°C) |
| APFC MOSFETs | 1x CR MICRO CS13N50FA9R ( 500V, 8.2A @ 100°C, Rds(on): 0.4 Ohm) |
| APFC Boost Diode | 1x NXP BYC8X-600 (600V, 8A @ 150°C) |
| Bulk Cap(s) | 1x Teapo (400V, 330uF, 2000h @ 105°C, LH) |
| Main Switchers | 2x PINGWEI 15N50TFS (500V, 9.5A @ 100°C, Rds(on): 0.21 Ohm) |
PFC+PWM Combo Controller | Champion CM6800TXIP & |
| Topology | Primary side: APFC, Double Forward Secondary side: [12V] Synchronous Rectification & [Minor Rails] DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 4x Siemens SPP80N05 (55V, 66A @ 100°C, Rds(on): 12mOhm) |
| 5V & 3.3V | DC-DC Converters: DC-DC Converters: 4x Potens PDD3906 (30V, 51A @ 100°C, Rds(on): 6.0 mOhm) PWM Controller(s): 1x Anpec APW7164C |
| Filtering Capacitors | Electrolytic: |
| Supervisor IC | Weltrend WT7527RT |
| Fan Model | EFS-12E12H (120mm, 12V, 0.50A, Rifle Bearing Fan) |
| 5VSB Circuit | |
| Rectifier | 1x PINGWEI PS1060L |
| Standby PWM Controller | 1x Excelliance MOS EM8569D |
| 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 | ±0.43% |
| Timings | ±2.64ms |
| Power Excursions (Transient Response) | ±0.18V |
| Conducted EMI Emissions (150 kHz – 30 MHz) | ±2.35 dB |
| Noise Output | ±1.23 dB |