Isolated, High Density, Eighth-Brick DC/DC Converters (1.25-20 Amp)

Murata Power Solutions
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Measuring just 0.89 × 2.22 × 0.36 inches (22.6 × 56.4 × 9.1mm), these open-frame, low-profile E-bricks fit the industry-standard quarter-brick footprint. Now you can “cut-and-paste” the layout from your last Q-brick design to save time and save 44% board space (1.86 square inches versus 3.3) in the process.

From a 9-18V, 18-36V or 36-75V input, ULEs deliver 1.5 to 48 Volt outputs with current up to 20 Amps. They employ an interleaved, synchronous- rectifier topology that exploits 100% of their duty cycle. They simultaneously achieve high efficiency, low noise, tight line/load regulation, and quick step response.

An open-frame design, high efficiency, low-on-resistance FETs, and planar magnetics embedded in heavy-copper pc boards all contribute to impressive thermal derating. The ULEs feature set includes high isolation (2250Vdc, 48V models), input pi filters, input undervoltage shutdown, output overvoltage protection, current limiting, short-circuit protection, and thermal shutdown. The standard footprint carries VOUT trim, on/off control, and sense pins (sense pins are not available on 12V or higher models).

All ULE E-Bricks are certified to the BASIC-insulation requirements of UL/EN/IEC60950-1, 2nd edition, and all “D48” models (36-75V input ranges) carry the CE mark. Safety certifications, EMC compliance testing and qualification testing are available.


  • RoHS compliant
  • New 1/8-brick package, 1/4-brick pinout in through-hole or SMT version
  • 0.89 x 2.22 x 0.36 in. (22.6 x 56.4 x 9.1mm)
  • Output current: 1.25-20 Amps
  • Output voltages: 1.5V to 48V
  • Input voltage: 12V, 24V and 48V nominal
  • Interleaved, synchronous-rectifier topology delivers:
    • Outstanding efficiency (to 94%)
    • Low noise
    • Stable no-load operation
    • No output reverse conduction
  • Excellent thermal performance
  • On/off control, trim and sense pins
  • Fully isolated (2250Vdc BASIC)
  • Fully I/O protected; Thermal shutdown
  • Certified to UL/IEC/EN 60950-1 and CAN/CSA C22.2 No.60950-1, 2nd edition
  • Lead-free construction/attach