Murata Power Solutions Supplier Page

RBC-12/17-D48 Series Bus Converter

Quarter brick, regulated bus converter from Murata Power Solutions

Murata Power Solutions' Product The present trend in distributed power architectures (DPA) requires both high efficiency and some regulation of the output voltage to reduce the risk of under voltage dropout. Earlier unregulated bus converters were simply ratiometric “DC transformers.” Murata Power Solutions' fully isolated (2250 Vdc) RBC series accept a wide range 36 Vdc to 75 Vdc input (48 V nominal) and convert it to an output of 12 Vdc. This output then drives point-of-load (PoL) converters such as the Okami, LSN, LEN, LSM or LQN series, which feature precise load regulation. Applications include 48 V powered datacom and telecom installations, base stations, cellular telephone repeaters, and embedded systems. The series' low overall height of 0.42" (10.7 mm) fits tight card cages.

The RBC’s synchronous-rectifier topology and fixed frequency operation means excellent efficiencies. “No fan” or zero airflow applications may use the optional base plate for cold surface mounting or natural-convection heat sinks.

A wealth of electronic protection features include input undervoltage (UV) lockout, output current limit, short circuit hiccup, overtemperature shutdown and output overvoltage. Available options include positive or negative polarity remote On/Off control and the baseplate. Assembled using ISO-certified automated surface-mount techniques, the RBC series includes all UL and IEC emissions, safety, and flammability certifications.

  • Up to 210 W total output power
  • Certified to UL/IEC/EN 60950-1 and CSA C22.2 No.60950-1-07, 2nd edition
  • Up to 93% ultra-high efficiency at full load
  • 48 V Input ( up to 36-75 V range)
  • 12 V/17 A output for regulated intermediate bus architectures (RIBA) with POL converters
  • Fully isolated, 2250 Vdc (BASIC)
  • 2.3" x 1.45" x 0.42" quarter brick
  • Stable no-load condition
  • Thermal shutdown
  • Fully I/O protected
  • Synchronous-rectifier topology
  • 225 kHz fixed switching frequency

Digi-Key P/N Manufacturer P/N Description Datasheet
811-2262-ND RBC-12/17-D48N-C CONVERT DC/DC 48V 17A NEG CC Datasheet