MORNSUN’s 120W Open-frame Medical AC DC Converter LO120-20BxxMU Series

To satisfy the demand of medical applications for medium power segment power supply, MORNSUN launches the high-reliable and cost-effective LO120-20BxxMU series (84W output power without fan, 120W output power with fan). The LO120-20BxxMU series is the most cost-effective choice for applications that do not have high requirements for size and active PFC function.

The LO120-20BxxMU series has the advantages of small size (4″2″1.26″), low leakage current lower than 100μA, high efficiency, low power consumption, etc. It meets the reinforced insulation 2xMOPP and medical certification EN60601-1, ES60601-1. And it also has the complete protections of output short-circuit, over-current, over-voltage, etc.


1) High reliability

  • High I/O isolation test voltage up to 4000VAC
  • Low leakage current<100μA (参考英文技术手册)
  • Meets 2 x MOPP safety certification
  • High output voltage accuracy
  • Meet EN60601-1, ES60601-1 standards
  • Low Noise

2) Compact size: 101.6050.8029mm

3) Wide operating temperature, high efficiency, low power consumption, low interference

  • Operating temperature range:-30℃ to +70℃
  • Efficiency up to 91%
  • Stand-by power consumption<0.3W
  • EMI meets CISPR32/EN55032 CLASS B, CE margin >6dB, RE margin >5dB


With a high-reliable design for the medical industry, the LO120-20BxxMU series also can be used in industrial control, electric power, security, smart home, etc.


Universal input voltage range: 85-264VAC or 120-370VDC

Operating temperature range: -30℃ to +70℃

Compact size: 101.6050.8029mm

Contact leakage current:<50μA(actual test: 36.5uA)

Meets 5000m altitude requirements

Output short circuit, over-current, over-voltage, over-temperature protections

Hold-up time of 50ms(typ.)

Efficiency up to 91%

For more information, please visit