BWR Series
www.murata-ps.com
3 Watt, Dual Output DC-DC Converters
Typical units
FEATURES
PRODUCT OVERVIEW
Low Cost!
Packaged in industry-standard DIP’s, the 3 Watt
dual-output models of Murata Power Solutions’
XWR Series DC-DC converters are fully regulated
(±0.5% max. line, ±1% max. load), fully isolated
(1000Vdc minimum), extremely efficient (as high
as 78% guaranteed) building blocks providing
true component-like flexibility and convenience to
designers of modern distributed power systems.
Automated, SMT-on-pcb construction
No external components required
±5, ±12 or ±15 Volt outputs
Choice of 3 input voltage ranges:
4.5-9 Volts
9-18 Volts
18-72 Volts
1.25" x 0.8" x 0.45" DIP form factor
Industry-standard package and pinout
Fully isolated, 1000Vdc guaranteed
Guaranteed efficiencies to 78%
–25 to +75°C operation with no derating
UL 1950, CSA 22.2 No. 234 and IEC 950
EMI/EMC characterized
Modifications and customs for OEM’s
Exploiting high-frequency (170-200kHz), flyback topologies and contemporary, highly automated, SMT
assembly techniques, BWR Model DC-DC’s have
enough room to include input (pi type) and output
filters within their package. Offering true "plugand-play" convenience, these power converters
require no external components. They operate over
the full –25 to +75°C temperature range with no
output power derating.
4.5-9V ("D5" models), 9-18V ("D12" models) or
an ultra-wide 18-72V ("D48" models). Transient
response time is a quick 200μsec.
These extremely rugged modules are fully encapsulated with a thermally conductive potting compound. They are moisture and vibration resistant
and have established a reputation for outstanding
MTBF. For telecommunication, computer and other
EMI-sensitive applications, these DIP-packaged
DC-DC converters offer full EMI/EMC characterization data.
Industry-standard pinouts make Murata Power
Solutions’ BWR Model 3W DC-DC’s ideal replacements for other more costly, less reliable power
converters. Similarly, they are excellent choices for
new design-ins in systems demanding small size,
low cost and high reliability.
Output voltages are either ±5, ±12 or ±15 Volts.
Input voltage ranges are either
SIMPLIFIED SCHEMATIC
+VOUT
+VIN
COMMON
–VOUT
–VIN
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
Typical topology is shown
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_BWR3W.D01 Page 1 of 4
BWR Series
3 Watt, Dual Output DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
➀
➁
➂
➃
Input
Efficiency
(mA)
Min.
Typ.
Package
(Case/
Pinout)
35/278
75%
77%
C1, P2
18-72
10/76
75%
77%
C1, P2
9-18
35/346
73%
75%
C1, P2
48
18-72
10/81
78%
80%
C1, P2
±1.0%
12
9-18
35/346
73%
75%
C1, P2
±0.5%
±1.0%
48
18-72
10/81
78%
80%
C1, P2
±0.5%
±1.0%
5
4.5-9
75/727
70%
72%
C1, P2
±0.5%
±1.0%
5
4.5-9
100/736
70%
72%
C1, P2
R/N (mVp-p) Regulation (Max.) VIN Nom. Range
IOUT
(mA, Max.) Typ. Max.
(Volts) (Volts)
Line
Load
Model
VOUT
(Volts)
BWR-5/250-D12-C
±5
±250
75
120
±0.5%
±1.0%
12
9-18
BWR-5/250-D48-C
±5
±250
75
120
±0.5%
±1.0%
48
BWR-12/125-D12-C
±12
±125
75
150
±0.5%
±1.0%
12
BWR-12/125-D48-C
±12
±125
75
150
±0.5%
±1.0%
BWR-15/100-D12-C
±15
±100
75
150
±0.5%
BWR-15/100-D48-C
±15
±100
75
150
BWR-12/105-D5-C
±12
±105
75
150
BWR-15/85-D5-C
±15
±85
75
150
Full Load
IIN
Typical at TA = +25°C under nominal line voltage and full-load conditions unless otherwise noted.
Ripple/Noise (R/N) measured over a 20MHz bandwidth.
Balanced loads, 10% to 100% load.
Nominal line voltage, no-load/full-load conditions.
MECHANICAL SPECIFICATIONS
PART NUMBER STRUCTURE
B WR - 15 / 100 - D48 - C
Output Configuration:
B = Bipolar
Wide Range Input
Nominal Output Voltages:
±5, ±12 or ±15 Volts
RoHS-6 compliant*
Input Voltage Range:
D5 = 4.5-9 Volts (5V nominal)
D12 = 9-18 Volts (12V nominal)
D48 = 18-72 Volts (48V nominal)
Maximum Output Current
in mA from each output
All dimension in Inches (mm)
1.25
(31.75)
0.45
(11.43)
STANDOFFS
0.025
(0.64)
Case C1
0.020 ±0.002 DIA.
(0.508 ±0.051)
0.600
(15.24)
0.15 MIN
(3.81)
0.200
(5.08)
0.18
(4.57)
0.100
(2.54)
*Contact Murata Power Solutions Technologies for availability
3 4
7
8
0.600
(15.24)
1 2
5
0.80
(20.32)
6
BOTTOM VIEW
PLASTIC CASE WITH AN INSULATED BASE
0.10
(2.54)
I/O Connectiions
Pin
1
2
3
4
5
6
7
8
Function P2
+Input
+Input
–Input
–Input
Common
+Output
Common
–Output
www.murata-ps.com/support
MDC_BWR3W.D01 Page 2 of 4
BWR Series
3 Watt, Dual Output DC-DC Converters
Performance/Functional Specifications
Absolute Maximum Ratings
Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted.
Input
Input Voltage Range:
"D5" Models
"D12" Models
"D48" Models
4.5-9 Volts (5V nominal)
9-18 Volts (12V nominal)
18-72 Volts (48V nominal)
Input Current
See Ordering Guide
Input Filter Type ➁
Reverse-Polarity Protection
Input Voltage:
"D5" Models
"D12" Models
"D48" Models
12 Volts
20 Volts
80 Volts
Input Reverse-Polarity Protection
Current must be
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