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CUI Inc VOFM-280B AC-DC Power Supplies

CUI Inc VOFM-280B AC-DC Power Supplies are medical-grade open-frame and U-frame AC-DC power supplies in a 3" x 5" chassis-mount package. These CUI Inc models feature a 90VAC to 264VAC universal input voltage range, a wide operating temperature range (-20°C to +70°C with derating), and 200W power with natural convection and 280W with forced air cooling. The efficient performance and compact size of the VOFM-280B power supplies make them an ideal solution for a range of medical, consumer, industrial, and information/communication technology (ICT) applications.

Features

  • Chassis-mount devices with open-frame and U-frame versions
  • 200W with natural convection, 280W with forced air cooling
  • Certified to EN/UL 62368-1
  • Designed to meet 60601-1-2 and EN 55011/EN 55032
  • 90VAC to 264VAC universal input range
  • 5V standby and 12V fan outputs
  • Output short-circuit, over-current, over-voltage, and over-temperature protection
  • 3000m operating altitude
  • -20°C to +70°C operating temperature range with derating
  • Remote ON/OFF control

Applications

  • Consumer
  • Industrial
  • ICT

Specifications

  • 12VDC to 54VDC output voltage
  • 280W maximum output power
  • 5.18A to 23.33A maximum output current
  • 150mVp-p to 400mVp-p maximum ripple and noise
  • 91% typical efficiency

Mechanical Dimensions

Mechanical Drawing - CUI Inc VOFM-280B AC-DC Power Supplies
Published: 2025-02-17 | Updated: 2025-12-12