Murata Power Solutions Supplier Page

Isolated Wide-Range DC/DC Converters

UEI30 Series with Wide 4:1 Input Range - Now Available at Digi-Key

Murata Power Solutions' UEI30 isolated wide-range DC/DC converters deliver a full 30W output power from a board area of just 1.8in2. The UEI30 gives tightly regulated, fixed output voltages of 5VDC and a 4:1 input of 18VDC to 75VDC. A synchronous rectifier forward topology helps the UEI30 Series achieve high efficiency levels of up to 91% and minimal heat build-up allowing operation without cooling fans.

UEI30 Series Datasheet
Murata Power Solutions UEI30 DC/DC Converter
  • Overview
  • Features
  • Applications
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The UEI 30W Series includes full magnetic and optical isolation up to 2250VDC (basic insulation). For connection to digital systems, the outputs offer fast settling to current step loads and tolerance of higher capacitive loads. Excellent ripple and noise specifications assure compatibility to circuits using CPU's, ASIC's, programmable logic and FPGA's. No minimum load is required. For systems requiring controlled start-up and shutdown, an external switch, transistor or digital logic may be used to activate the remote On/Off control. Remote sense inputs compensate for resistive line drops at high currents.

A wealth of self-protection features help to avoid both converter and external circuit problems. These features include: input under-voltage lockout, over-temperature shutdown, output over-voltage, and reverse conduction elimination.

  • Primary Features:
    • Wide 4:1 input at a competitive price
    • Low profile compact design 0.35" (8.9 mm)
    • High efficiency to 91%
    • Input-output isolation to 2250VDC (basic)
    • Operating temperature range -40°C to 85°C (derating)
    • Start-up into pre-biased loads
  • Protection Features and Safety:
    • Input over-voltage/transient protection (auto recovery)
    • Input under-voltage cut-out (auto restart)
    • Output over-current/short circuit protection (hiccup)
    • Over-temperature protection (auto recovery)
    • Stable no load operation
    • Start-up into pre-biased loads
    • UL/EN/IEC 60950 safety approvals in progress
    • I/O isolation voltage up to 2250VDC (BASIC)

  • Standard Functions:
    • Remote on/off with positive or negative logic
    • Output voltage trim
  • Environmental:
    • RoHS 6/6 compliant (5/6 on request/special order)
  • RoHS Compliant

  • Mobile and battery powered applications
  • Robotics
  • Test equipment
  • High reliability (COTS)
  • Telecom, wireless
  • Distributed power architecture (DPA)
  • Low-mid power broad market applications

  • Industrial & instrumentation
  • Transportation
  • Aerospace
  • Telecom & wireless equipment
  • Computers & office equipment

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Murata Power Solutions
Part Number
Part Number
On/Off Control Polarity
Voltage - Input
Power (Watts)
1st Output
18 ~ 75VDC
5VDC @ 6A