ECF40 Series AC-DC Power Supplies 40 Watts

Open frame – Low Profile  AC/DC Power Supply

The ECF40 series is designed to minimize the no load power consumption and maximize efficiency to facilitate equipment design to meet the latest environmental legislation. Approved for medical and ITE applications in either Class I or Class II installations, this range of single output AC-DC power supplies are packaged in a low profile 1.1” height with a foot print of just 1.5” by 3”. The ECF40 provides up to 40W convection-cooled over the full 90-264 VAC input range, and operates down to 80 VAC with minimal de-rating. The power supply features two AC line fuses and low leakage currents required by medical applications. The low profile, low noise and safety approvals covering ITE and medical standards allows the versatile ECF40 series to be used in a wide range of applications.

Service life

The estimated service life of the ECF40 is determined by the cooling arrangements and load conditions experienced in the end application. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of key capacitors within the product when installed by the end application.

Specifications Table

CharacteristicMinimumTypicalMaximumUnitsNotes & Conditions
Input Voltage – Operating80115/230264VDCDerate output from 100% at 90 VAC to 90% at 85 VAC and 80% at 80 VAC
Input Frequency4750/6063HzAgency approval, 47-63 Hz
Power FactorEN61000-3-2 clas s A
Input Current – Full Load0.8/0.4A115/230 VAC
Inrush Current60A264 VAC cold s tart, 25 ºC
Earth Leakage Current250264 VAC/60 Hz
No load Input Power0.15μA
Input ProtectionT3.15 A/250 A, 250 V Internal fuse fitted in line and neutral.W
CharacteristicMinimumTypicalMaximumUnitsNotes & Conditions
Output Voltage1248VDCSee Models and Ratings table
Initial Set Accuracy±1%50% load, 115/230 VAC
Output Voltage Adjustment10%
Minimum Load0ANo minimum load required
Start Up Delay12s
Outout Rise Time50ms
Hold Up Time8.3/20msMin at full load 115/230 VAC
Line Regulation±0.5%90-264 VAC
Load Regulation1%0-100% load.
Transient Response4%Recovery within 1% in les s than 500 μs
for a 50-75% and 75-50% load step
Over/Undershoot5%Full load
Ripple & Noise 3/2% pk-pk12 V/15-48 V models
Overvoltage Protection115140%Vnom, recycle input to reset
Overload Protection110160% I nom
Short Circuit ProtectionContinuous trip and res tart (hiccup)
Temperature Coefficient0.05%/ °C
CharacteristicMinimumTypicalMaximumUnitsNotes & Conditions
Efficiency90%Average active mode efficiency at 25% , 50% , 75% and 100% load
Isolation: Input to Output
Input to Ground
Output to Ground
2 x MOPP
1 x MOPP
1 x MOPP at output voltage
Power Density8.1W/in3
Mean Time Between Failure500kHrsMIL-HDB K-217F, Notice 2 +25 °C GB
Weight0.15 (69.0)lb (g)
CharacteristicMinimumTypicalMaximumUnitsNotes & Conditions
Operating Temperature -25 +70°CSee derating curve, fig.3
Storage Temperature -40 +85°C
Operating Altitude5000/4000mITE/Medical
Shock±3 x 30g shocks in each plane, total 18 shocks . 30g = 11ms (+/- 0.5msecs ), half s ine. Conforms to EN60068-2-27
VibrationSingle axis 10-500 Hz at 2g sweep and endurance at resonance in all 3 planes . Conforms to EN60068-2-6
EMC: Emissions
PhenomenonStandardTest LevelCriteriaNotes & Conditions
ConductedEN55011/32Class BWith no external components
RadiatedEN55011/32Class ASee application notes
Harmonic CurrentEN61000-3-2Class A
Voltage FunctionsEN61000-3-3

Series Table

Models & Ratings
Model NumberOutput PowerOutput VoltageOutput CurrentEfficiency(1)
ECF40US 1240 W12.0 V3.34 A91%
ECF40US 1540 W15.0 V2.67 A92%
ECF40US 1840 W18.0 V2.23 A93%
ECF40US 2440 W24.0 V1.67 A91%
ECF40US 3640 W36.0 V1.11 A90%
ECF40US 4840 W48.0 V0.83 A90%