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RBQ-12-33-D48 Datasheet, PDF (1/15 Pages) Murata Power Solutions Inc. – Quarter-Brick 400-Watt Isolated DC-DC Converters | |||
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www.murata-ps.com
RBQ-12/33-D48xB-C
Quarter-Brick 400-Watt Isolated DC-DC Converters
Output (Vout, typ)
11.7
Current (A)
33
Nominal Input (V)
48
Typical unit
FEATURES
ï®ï 386 Watts total output power, 11.7 VDC @ 33 A
ï®ï Regulated Intermediated Bus Architecture (RIBA)
with PoL converters
ï®ï 96% ultra-high efï¬ciency at full load (typical)
ï®ï 36 to 75 Volt DC input range (48 VDC nominal)
ï®ï Standard quarter-brick footprint
ï®ï Synchronous rectiï¬er topology with 100 mV
ripple & noise
ï®ï Up to +85° Celsius thermal performance (with
derating)
ï®ï Stable no-load operation
ï®ï Multiple-unit parallel operation for increased
current
ï®ï Fully isolated to 2250 VDC (BASIC)
ï®ï Remote On/Off enable control
ï®ï Extensive protection features â SC, OC, UVLO, OT
ï®ï Certiï¬ed to full safety, emissions and environ-
mental standards
ï®ï Approved to UL 60950-1, CAN/CSAC22.2 No.
60950-1, IEC60950-1, EN60950-1 safety ap-
provals (2nd Edition, with Amendment 1)
PRODUCT OVERVIEW
The fully isolated (2250 Vdc) RBQ-12/33-D48xB-C
module accepts a 36 to 75 Volt DC input voltage
range (48 VDC nominal) and converts it to a low Vdc
output. Applications include 48V-powered datacom
and telecom installations, base stations, cellular
dataphone repeaters, instruments and embedded
systems. Wideband output ripple and noise is a low
100 mV, peak-to-peak.
The RBQâs synchronous-rectiï¬er topology with
line regulation and ï¬xed frequency operation
means excellent efï¬ciencies up to 96%, enabling
âno heatsinkâ operation for most applications up
to +85° Celsius (with derating airï¬ow). âNo fanâ or
zero airï¬ow higher temperature applications may
use the optional base plate for cold surface mount-
ing or natural-convection heatsinks.
A wealth of electronic protection features include
input undervoltage lockout (UVLO) , output current
limit, short circuit hiccup, and overtemperature
shutdown. Available options include positive or
negative logic remote On/Off control, conformal
coating, and various pin lengths. Assembled using
ISO-certiï¬ed automated surface-mount techniques,
the RBQ series is certiï¬ed to all UL and IEC emis-
sions, safety and ï¬ammability standards.
F1
+Vin (1)
External
DC
Power
Source
On/Off
Control
(2)
Open = On
$MPTFE0GG
1PTJUJWF
MPHJD
-Vin (3)
*TPMBUJPO
Barrier
Controller
and Power
5SBOTGFS
Duty Cycle
3FHVMBUJPO
t4XJUDIJOH
t'JMUFST
t$VSSFOU4FOTF
Reference and
Error Ampliï¬er
Figure 1. Connection Diagram
Typical topology is shown. Murata Power Solutions
recommends an external fuse at F1.
Ḥ
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
+Vout (8)
-Vout (4)
MDC_RBQ-12/33-D48.A07Î Page 1 of 15
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