BWR Series
www.murata-ps.com
3 Watt, Dual Output DC/DC Converters
FEATURES
PRODUCT OVERVIEW
Low Cost!
Packaged in industry-standard DIP’s, the 3 Watt
dual-output models of DATEL’s 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 "plug-and-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 DATEL’s 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.B03 Page 1 of 4
BWR Series
3 Watt, Dual Output DC/DC Converters
PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE
Output
Model
BWR-5/250-D12
Input
R/N (mVp-p)
VOUT
(Volts)
IOUT
(mA, Max.)
Typ.
Max.
Line
±5
±250
75
120
±0.5%
Efficiency
Load
VIN Nom.
(Volts)
Range
(Volts)
IIN
(mA)
Min.
Typ.
Package
(Case/
Pinout)
±1.0%
12
9-18
35/278
75%
77%
C1, P2
Regulation (Max.)
Full Load
BWR-5/250-D48
±5
±250
75
120
±0.5%
±1.0%
48
18-72
10/76
75%
77%
C1, P2
BWR-12/105-D5
±12
±105
75
150
±0.5%
±1.0%
5
4.5-9
75/727
70%
72%
C1, P2
BWR-12/125-D12
±12
±125
75
150
±0.5%
±1.0%
12
9-18
35/346
73%
75%
C1, P2
BWR-12/125-D48
±12
±125
75
150
±0.5%
±1.0%
48
18-72
10/81
78%
80%
C1, P2
BWR-15/85-D5
±15
±85
75
150
±0.5%
±1.0%
5
4.5-9
100/736
70%
72%
C1, P2
BWR-15/100-D12
±15
±100
75
150
±0.5%
±1.0%
12
9-18
35/346
73%
75%
C1, P2
BWR-15/100-D48
±15
±100
75
150
±0.5%
±1.0%
48
18-72
10/81
78%
80%
C1, P2
➀
➁
➂
➃
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
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)
Wide Range Input
Nominal Output Voltages:
±5, ±12 or ±15 Volts
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
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MDC_BWR3W.B03 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 <2A. Brief duration
only. Fusing recommended.
Pi
Output Overvoltage Protection
None
Yes (Instantaneous, 2A maximum)
Output Current
models
sustained output short
Current limited. Max. current and
short-circuit duration are model
dependent. "D12" and "D48"
can withstand
circuits.
Storage Temperature
–40 to +100°C
Lead Temperature (soldering, 10 sec.)
+300°C
Output
VOUT Accuracy (50% load)
±1%, maximum
Temperature Coefficient
±0.02% per °C
Ripple/Noise (20MHz BW) ➁
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage ➂
1000Vdc, minimum
Current Limiting:
"D5" Models
"D12" and "D48" Models
Power-limiting technique, auto-recovery
Hiccup technique, auto-recovery
Dynamic Characteristics
Transient Response (50% load step)
200µsec to ±1% of final value
Switching Frequency:
"D5" Models
"D12" and "D48" Models
200kHz
170kHz
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifications Table is not implied.
TECHNICAL NOTES
Floating Outputs
Environmental
Operating Temperature ➃
(Ambient, no derating)
–25 to +75°C
Storage Temperature
–40 to +100°C
Physical
Dimensions
1.25" x 0.8" x 0.45" (31.8 x 20.3 x 11.4mm)
Case Material
Diallyl phthalate, UL94V-0-rated
Pin Material
RoHS: Gold plate over copper alloy
Non RoHS: Tin plate over copper alloy
Weight
0.5 ounces (14.2 grams)
➀ These power converters require a minimum 10% loading to maintain specified regulation.
Operation under no-load conditions will not damage these devices; however they may not
meet all listed specifications.
➁ Application-specific internal input/output filtering can be recommended and perhaps added
internally upon request. Contact DATEL Applications Engineering for details.
➂ Devices can be screened or modified for higher guaranteed isolation voltages.
Contact DATEL Applications Engineering for details.
➃ Devices can be warranted or screened for lower-temperature operation.
Contact DATEL Applications Engineering for details. See DATEL's new BST 3W Models
for guaranteed operation to –40°C.
Since these are isolated DC/DC converters, their outputs are "floating." Any
BWR model may be configured to produce an output of 10V, 24V or 30V
(for ±5V, ±12V or ±15V models, respectively) by applying the load across
the +Output and –Output pins (pins 6 and 8), with either output grounded.
The Common (pins 5 and 7) should be left open. Minimum 20% loading is
recommended under these conditions.
Filtering and Noise Reduction
All BWR 3 Watt DC/DC Converters achieve their rated ripple and noise
specifications without the use of external input/output capacitors. In critical
applications, input/output ripple and noise may be further reduced by installing electrolytic capacitors across the input terminals and/or low-ESR tantalum or electrolytic capacitors across the output terminals. Output capacitors
should be connected between their respective output pin (pin 6 or 8) and
Common (pins 5 and 7) as shown in Figure 2. The caps should be located
as close to the power converters as possible. Typical values are listed in the
tables below. In many applications, using values greater than those listed
will yield better results.
To Reduce Input Ripple
"D5" Models
"D12" Models
"D48" Models
47µF, 15V
10µF, 35V
4.7µF, 100V
To Reduce Output Ripple
±5V Outputs
±12/15V Outputs
47µF, 10V, Low ESR
22µF, 20V, Low ESR
In critical, space-sensitive applications, DATEL may be able to tailor the internal input/output filtering of these units to meet your specific requirements.
Contact our Applications Engineering Group for additional details.
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MDC_BWR3W.B03 Page 3 of 4
BWR Series
3 Watt, Dual Output DC/DC Converters
EMI RADIATED EMISSIONS
+OUTPUT
6
+
1, 2
+INPUT
COUT
5, 7
+
COMMON
CIN
3, 4
+
–INPUT
COUT
8
–OUTPUT
If you’re designing with EMC in mind, note that all of DATEL’s BWR 3 Watt
DC/DC Converters have been characterized for radiated and conducted
emissions in our new EMI/EMC laboratory. Testing is conducted in an EMCO
5305 GTEM test cell utilizing EMCO automated EMC test software. Radiated emissions are tested to the limits of FCC Part 15, Class B and CISPR
22 (EN 55022), Class B. Correlation to other specifications can be supplied
upon request. Radiated emissions plots to FCC and CISPR 22 for model
BWR-5/250-D12 appear below. Published EMC test reports are available for
each model number. Contact DATEL’s Applications Engineering Department
for more details.
Figure 2. Using External Capacitors to Reduce
Input/Output Ripple/Noise
BWR-5/250-D12 Radiated Emissions
FCC Part 15 Class B, 3 Meters
Converter Output = ±5Vdc @ ±203mA
80
Input Fusing
70
VIN Range
"D5"
"D12"
"D48"
Fuse Value
1.5A
1A
0.5A
60
Radiated Emissions (dBµV/M)
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For DATEL BWR 3
Watt
DC/DC Converters, you should use slow-blow type fuses with values
no greater than the following:
FCC Class B Limit
50
40
30
20
10
0
Radiated Emissions
–10
–20
1000
100
Frequency (MHz)
CUSTOM CAPABILITIES
DATEL’s world-class design, development and manufacturing team stands
ready to work with you to deliver the exact power converter you need for
your demanding, large volume, OEM applications. And ... we’ll do it on time
and within budget!
BWR-5/250-D12 Radiated Emissions
EN 55022 Class B, 10 Meters
Converter Output = ±5Vdc @ ±203mA
80
70
We have compiled a large library of DC/DC designs that are currently used
in a variety of telecom, medical, computer, railway, aerospace and industrial
applications. We may already have the converter you need.
Contact us. Our goal is to provide you the highest-quality, most cost-effective power converters available.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
60
Radiated Emissions (dBµV/M)
Our experienced applications and design staffs; quick-turn prototype
capability; highly automated, SMT assembly facilities; and in-line SPC quality-control techniques combine to give us the unique ability to design and
deliver any quantity of power converters to the highest standards of quality
and reliability.
50
EN 55022 Class B Limit
40
30
20
10
0
Radiated Emissions
–10
–20
1000
100
Frequency (MHz)
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2012 Murata Power Solutions, Inc.
www.murata-ps.com/support
MDC_BWR3W.B03 Page 4 of 4