CUI Inc PRQ200W-D 200W Isolated DC-DC Converters

CUI Inc. PRQ200W-D 200W Isolated DC-DC Converters are quarter-brick converters housed in a fully encapsulated aluminum alloy case with a black plastic bottom and a UL 94V-0 rating. These high-power DC-DC converters offer EN 62368-1 certification with up to 91% efficiency and an ultra-wide 4:1 input range. The CUI Inc. PRQ200W-D 200W Isolated DC-DC Converters are ideal for data, telecom, robotics, and industrial applications where a large amount of power is needed in a compact package.


  • 1/4-brick package with an industry-standard pin-out, DIP package
  • 4:1 ultra-wide input voltage range
  • Single regulated output
  • High efficiency up to 91%
  • Remote on/off control
  • Output short circuit, over-current, over-voltage, and over-temperature protection
  • Five-sided shielded case
  • Available with a heat sink or base plate
  • EN 62368-1 certified
  • RoHS compliant


  • Data
  • Telecom
  • Robotics
  • Industrial 


  • Input voltage
    • 48VDC typical
    • 18VDC to 75VDC range
  • -0.7VDC to 90VDC input surge voltage range
  • 200W isolated output
  • 5VDC to 48VDC output voltage range
  • 4.2A to 40.0A maximum output current
  • 250kHz typical switching frequency
  • ±3% typical transient response
  • ±0.03%/°C temperature coefficient
  • 2250VDC isolation
  • 250mVp-p or 300mVp-p maximum ripple and noise
  • 88% to 91% efficiency range
  • 100MΩ minimum isolation resistance
  • 2200pF isolation capacitance
  • Temperature ranges
    • -40°C to +85°C operating
    • -55°C to +125°C storage
    • 5% to 95% storage humidity range, non-condensing
  • Dimensions
    • 61.8mm x 40.2mm x 12.7mm
    • 62.0mm x 56.0mm x 14.6mm with base plate
    • 61.8mm x 40.2mm x 27.7mm with heat sink
  • Natural convection cooling
  • UL 94V-0 flammability rating
Published: 2021-11-09 | Updated: 2022-03-11