BWR Models
www.murata-ps.com
Miniature 5 Watt DC-DC Converters
Typical units
FEATURES
PRODUCT OVERVIEW
Small size, 1" x 1" x 0.45"
The migration to distributed power is accelerating.
The critical need for accurate voltages, tight regulation and rapid transient response is propelling
the move to power processing at the "point-ofuse" with low-power DC-DC converters physically
located right at their loads.
5 Watts output power
Full
external components required
No
Drop-in replacements for many standard,
2" x 1" DC-DCs
input voltage ranges:
Wide
18-36V or 36-72V
Standard output voltages:
±5, ±12, ±15 Volts
Guaranteed efficiencies to 80%
MPS’s miniature, full featured, 5 Watt BWR Models
were specifically designed for today’s demanding distributed power architectures in aerospace,
marine, telecom and computer applications. The
converters’ small size (1" x 1" x 0.45"),
full 5 Watt output capability and low cost give
system architects unprecedented design and
layout flexibility.
regulated and isolated
Fully
(1000Vdc guaranteed)
Output overvoltage protection and
current limiting
to +95oC operating temperature
–25
Occupying less than 0.5in3 total volume, these
extremely compact, fully regulated and isolated
(1000Vdc) modules are available with ±5, ±12 or
±15 Volt outputs. Input voltage ranges are either
18-36 Volts ("D24" models) or 36-72 Volts ("D48"
models).
Shielded cases (5 sides)
UL1950, CSA 22.2 No. 234, and IEC950
cations and customs for OEMs
Modifi
+VIN
(1)
Although their overall size is 50-75% smaller than
many similarly rated power modules, these 1"
x 1" BWR Models are exact, drop-in, pin-for-pin
replacements for many standard 2" x 1" and 2"
x 2", 5 Watt modules. They achieve their small
size and low cost by exploiting a novel feedback
approach that does not depend upon traditional
optocoupler techniques.
All models are 5-side shielded and have a nonconductive baseplate that permits pc-card runs
to be placed beneath the package. Units are
assembled using
high-speed automated SMT techniques and are
fully encapsulated with thermally
conductive potting compound. Every unit is electrically tested before and after
encapsulation, 100% burned-in under full load,
hi-pot tested, and final-electrical tested prior to
shipment. Every unit meets MPS’s traditional high
standards for quality and long-term reliability.
*
+VOUT
(3)
PWM
COMMON
(4)
–VOUT
(6)
–VIN
(2)
* "D24" models only
For full details go to
www.murata-ps.com/rohs
Figure 1. Simplified Schematic
Typical topology is shown.
www.murata-ps.com/support
MDC_BWR_5W.D01 Page 1 of 5
