RBC-12 Datasheet, PDF (1/9 Pages) Murata Manufacturing Co., Ltd. – Quarter Brick, Regulated Bus Converters

www.murata-ps.com
Output (V)
12
RBC-12/17-D48 Series
Quarter Brick, Regulated Bus Converters
Current (A)
17
Nominal Input (V)
48
Typical unit
FEATURES
„ _{Up to 210 Watts total output power}
„ Up to 93% ultra-high efficiency @ full load
„ 48V Input ( up to 36-75V range)
„ 12V/17A Output for Regulated Intermediate Bus
Architectures (RIBA) with POL converters
„ Synchronous-rectifier topology
„ _{225kHz fixed switching frequency}
„ Fully isolated, 2250Vdc (BASIC)
„ 2.3" x 1.45" x 0.42" quarter brick
„ Stable no-load condition
„ Thermal shutdown
„ Fully I/O protected
„ Certified to UL/IEC/EN 60950-1 and CSA C22.2
No.60950-1-07, 2nd edition
Optimized for distributed power Regulated Intermediate Bus Archi-
tectures (RIBA), the RBC DC/DC bus converter series offer regulated
outputs (±1.5%) in an industry-standard quarter brick open frame
package.
PRODUCT OVERVIEW
The present trend in distributed power architec-
tures (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 transform-
ers.” The fully isolated (2250Vdc) RBC series accept
a wide range 36 to 75 Volt DC input (48V nominal)
and convert it to an output of 12Vdc. This output
then drives point-of-load (PoL) converters such as
our Okami, LSN, LEN, LSM or LQN series which
feature precise load regulation. Applications include
48V-powered datacom and telecom installations,
base stations, cellular telephone repeaters and
embedded systems. 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 heatsinks.
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.
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Typical topology is shown.
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11 Apr 2011 MDC_RBC-12/17-D48.A03 Page 1 of 9