RBE-12/20-D48 Series Eighth-Brick 240 W Isolated DC/DC Converter

Murata Power Solutions' fully-isolated RBE-12/20-D48 series that accepts a 36 to 75 VDC input voltage range and converts it to a fixed 12 VDC output

The fully-isolated (2250 VDC, no baseplate) RBE-12/20-D48 series accepts a 36 to 75 VDC input voltage range (48 VDC nominal) and converts it to a fixed 12 VDC output. Applications include 48 V-powered datacom and telecom installations, base stations, cellular dataphone repeaters, instruments, and embedded systems. Wideband output ripple and noise is a low 100 mV (typical), peak-to-peak. Reduced open frame overall height of 0.4˝ (10.2 mm) fits tight card cages. The RBE’s regulated synchronous-rectifier topology and fixed-frequency operation means excellent efficiencies up to 94.5%, enabling “no heatsink” operation for most applications up to +85°C (see derating curves). “No fan” or zero-airflow higher temperature applications may use the optional base plate for cold-plate mounting or natural-convection heatsinks. Electronic protection features include input under-voltage lock-out (UVLO), output current limit, short-circuit hiccup, and over-temperature shutdown. Available options include positive or negative logic On/Off control, conformal coating, various pin lengths, and the baseplate. Assembled using ISO-certified automated surface-mount techniques, the RBE series is certified to UL and IEC safety standards.

  • 240 W total output power, fixed12 VDC at 20 A
  • 94.5% ultra-high efficiency at full load with regulation
  • 36 to 75 VDC input range (48 VDC nominal)
  • Standard eighth-brick footprint
  • 0.4 inch (10.2 mm) low height (no baseplate)
  • Synchronous rectifier topology with 100 mV (typ.) ripple and noise
  • Up to +85°C thermal performance (with derating)
  • Stable no-load operation
  • Fully isolated to 2250 VDC (basic, no baseplate)
  • Remote On/Off enable control
  • Extensive protection features – SC, OC, UVLO, OT
  • Certified to safety, emissions, and environmental standards
  • Meets UL 60950-1, CAN/CSAC22.2 No. 60950-1, IEC60950-1, EN60950-1 safety approvals (2nd Edition) (pending)

RBE-12/20-D48 Series

Manufacturer Part Number Description Available Quantity Datasheets