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MWA 150 Series

The MWA150 series is an external switch mode power supply that offers an industry leading 5.4W/in³ power density and converter efficiencies between 89% and 91%. This unit is smaller than many lower power units of this type and meets Energy Star Level V efficiency standards. This very high efficiency results in lower internal heat dissipation leading to twice the lifetime expectation and lower operating costs. Designing in an Elpac Power System guarantees a highly efficient, highly reliable product.
RoHS Complaint
ICCNexergy MWA 150 Series

  • High Efficiency
  • High Power Density 5.4W/in³
  • Lifetime Expectation > 5 years
  • Hold-up Time > 25ms at full load
  • Medical Approval - EN60601-1 Class I
  • Energy Star Level V
  • EISA Compliant
  • CEC Compliant

Input Voltage 85 - 264VAC
100 - 240VAC Nominal
Input Frequency 47 - 63Hz
Input Current <2A rms
Inrush Current <37A at 230VAC cold start
Power Factor >0.97
Zero Load
Power Consumption
Earth Leakage Current <150µA @ 132VAC @ 60Hz
<250µA @ 264VAC @ 60Hz
Patient Leakage Current <50µA @ 132VAC @ 60Hz
<75µA @ 264VAC @ 60Hz
Output Voltage See table
Total Regulation +/-5%
Minimum Load No minimum load required
Start-Up Delay <1.5s
Hold-Up Time >25ms at any input voltage
Ripple & Noise <1% pk-pk**
Over Voltage Protection 110-135%
Over Temperature Protection Active - Recoverable; plus
Passive - Non Recoverable
Over Current Protection 120 - 180%
Short Circuit Protection Shutdown, auto-start
(hiccup mode)
**Ripple and noise measured with 20MHz bandwidth; 10µF tantalum capacitor in parallel with a 0.1µF ceramic capacitor.
Digi-Key Part Number Manufacturer P/N Output Voltage Output Current Peak Current¹ Total Regulation²
EPS437-ND MWA150012A-12A 12.0V 12.5A 15.0A ±5%
EPS438-ND MWA150015A-12A 15.0V 10.0A 12.0A ±5%
EPS439-ND MWA150018A-12A 18.0V 8.3A 10.0A ±5%
EPS440-ND MWA150024A-12A 24.0V 6.3A 7.5A ±5%
1) Maximum peak load (180W) lasting 500ms with a maximum 10% duty cycle.
2) Includes initial setting, line regulation, load regulation, and thermal drift.