Wide Input, Isolated Eighth-Brick DC/DC Converters (UWE Series)

Murata Power Solutions
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Murata Power Solutions introduces the UWE series of highly efficient 100 – 120 Watt open frame isolated DOSA-compatible eighth-brick DC/DC converters. Using the industry standard through-hole package, measuring 58.42 x 22.86 x 9.91 mm (2.3 x 0.9 x 0.39 inches), the single output units offer the nominal outputs of 3.3, 5 or 12 VDC. Providing an efficiency of typically 91.5% means that for most applications no forced airflow is required. Suiting embedded computing applications and instrumentation subsystems, the converters accommodate an ultra-wide 4:1 input voltage range from 18 to 75 VDC around a nominal 48 VDC. Line regulation is kept within +/- 0.25% Vout and load regulation is maximum +/- 0.2% Vout across the complete range. On-board remote sense inputs compensate for line voltage errors at high output currents. A trim function provides the ability to adjust outputs +/- 10% of nominal output voltage in order to compensate for line losses.

A remote on/off input, negative or positive, provides the ability to remotely control the converter such as required to schedule load startup. The UWE series can operate from –40 °C to +85 °C. Input to output isolation is 2,250 VDC. Protection features include input under voltage, output short circuit, over current and over temperature. An optional baseplate is available for conduction cooled applications.


  • Industry-standard through-hole eighth-brick package with 2.3" x 0.9" x 0.39" outline dimensions
  • Wide input range of 18-75 Vdc
  • Fixed outputs from 3.3, 5 and 12 Volts DC up to 120 Watts
  • Synchronous rectifi cation yields very high efficiency and low power dissipation
  • Operating temperature range from -40°C to +85˚C with derating
  • Up to 2250 Volt DC isolation
  • Outstanding thermal performance and derating
  • Extensive self-protection, over temperature and overload features with no output reverse conduction
  • On/Off control, trim and remote sense functions
  • Certified to UL/EN/IEC 60950-1, CAN/CSA-C22.2 No. 60950-1, 2nd Edition, safety approvals and EN55022/CISPR22 standards
  • Pre-bias operation for startup protection