®
®
INNOVATION and EXCELLENCE
Dual Output
BWR Models
Miniature, 1" x 1"
5 Watt, DC/DC Converters
Features
■
Small size, 1" x 1" x 0.45"
■
Full 5 Watts output power
■
No external components required
■
Drop-in replacements for many
standard, 2" x 1" DC/DC’s
■
Wide input voltage ranges:
18-36V or 36-72V
■
Standard output voltages:
±5, ±12, ±15 Volts
■
Guaranteed efficiencies to 80%
■
Fully regulated and isolated
(1000Vdc guaranteed)
■
Output overvoltage protection and
current limiting
■
–25 to +95oC operating temperature
■
Shielded cases (5 sides)
■
UL1950, CSA 22.2 No. 234, and IEC950
■
Modifications and customs for OEM's
+VIN
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-of-use" with low-power DC/DC converters physically
located right at their loads.
DATEL’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.
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).
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 non-conductive 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 DATEL’s traditional high standards for
quality and long-term reliability.
*
+VOUT
PWM
COMMON
–VOUT
–VIN
* "D24" models only
Figure 1. Simplified Schematic
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048 (U.S.A.) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • Email: [email protected]
XWR Series
M I N I AT U R E , 5 WAT T D C / D C C O N V E R T E R S
Performance Specifications and Ordering Guide
➀
Output
Input
Load ➂
VIN Nom.
(Volts)
Range
(Volts)
IIN ➃
(mA, Max.)
Efficiency
(Min.)
Package
(Case,
Pinout)
±2%
24
18-36
25/282
75%
C7, P4
±2%
48
36-72
25/141
75%
C7, P4
±2%
±2%
24
18-36
25/264
80%
C7, P4
±2%
±2%
24
18-36
25/260
80%
C7, P4
Regulation (Max.)
VOUT
(Volts)
IOUT
(mA, Max.)
Ripple/Noise ➁
(mVp-p, Max.)
Line
BWR-5/500-D24
±5
±500
150
±2%
BWR-5/500-D48
±5
±500
120
±2%
BWR-12/210-D24
±12
±210
150
BWR-15/165-D24
±15
±165
150
Model
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, 20% to 100% load.
Nominal line voltage, no-load/full-load conditions.
P A R T
N U M B E R
M E C H A N I C A L
S T R U C T U R E
S P E C I F I C A T I O N S
B WR - 15 / 165 - D24
Output Configuration:
B = Bipolar
Case C7
1.00
(25.40)
Input Voltage Range:
D24 = 18-36 Volts (24V nominal)
D48 = 36-72 Volts (48V nominal)
METAL CASE
0.45
(11.43)
Wide Range Input
INSULATED BASE
Maximum Output Current
in mA from each output
Nominal Output Voltages:
±5, ±12 or ±15 Volts
0.040 ±0.002 DIA.
(1.016 ±0.051)
0.20 MIN
(5.08)
0.800
(20.32)
0.100
(2.54)
0.10
(2.54)
3
0.400
(10.16)
1
0.800
1.00
(20.32) (25.40)
4
2
5
TEMPERATURE DERATING
0.200
(5.08)
6
BOTTOM VIEW
5
0.200
(5.08)
0.10
(2.54)
DIMENSIONS ARE IN INCHES (MM)
4.5
Output Power (Watts)
4
3.5
3
I/O Connections
Pin Function P4
1
+Input
2
–Input
3
+Output
4
Common
5
No Pin
6
–Output
2.5
2
1.5
1
0.5
0
–25
0
35
40
45
50
55
60
65
70
75
80
85
90
95
Ambient Temperature (°C)
2
Notes:
For "D24" models, the case
is connected to pin 2 (–VIN).
For "D48" models, the case
is connected to pin 1 (+VIN).
BWR Models
M I N I AT U R E , 5 WAT T D C / D C C O N V E R T E R S
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀
Absolute Maximum Ratings
Input
Input Voltage Range:
"D24" Models
"D48" Models
18-36 Volts (24V nominal)
36-72 Volts (48V nominal)
Input Voltage:
"D24" Models
"D48" Models
Input Current
See Ordering Guide
Input Reverse-Polarity Protection
Input Filter Type ➁
LC on "D24" models
C on "D48" models
Reverse-Polarity Protection
Yes (Instantaneous, 6A maximum)
Output Overvoltage Protection
±5V Outputs
±12V Outputs
±15V Outputs
Output
44 Volts
88 Volts
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
VOUT Accuracy (50% load):
±5V Outputs
±12/±15V Outputs
±1.5%, maximum
±1%, maximum
Temperature Coefficient
±0.02% per °C
Storage Temperature
–55 to +125°C
Ripple/Noise (20MHz BW) ➁
See Ordering Guide
Lead Temperature (soldering, 10 sec.)
+300°C
Output Current
Line Regulation
See Ordering Guide
Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage ➂
1000Vdc, minimum
Current Limiting
Auto-recovery
Overvoltage Protection
Zener/transorb clamps
Current limited. Max. current and
short-circuit duration are model
dependent.
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
Dynamic Characteristics
Transient Response (50% load step)
500µsec max. to ±1.5% of final value
Switching Frequency
170kHz (±10kHz)
Floating Outputs
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 3 and 6), with either output grounded. The
Common (pin 4) should be left open. Minimum 20% loading is recommended
under these conditions.
Environmental
Operating Temperature (ambient): ➃
Without Derating
With Derating
–25 to +60°C
to +95°C (See Derating Curve)
Storage Temperature
–55 to +125°C
Physical
Dimensions
1" x 1" x 0.45" (25.4 x 25.4 x 11.4mm)
Shielding
5-sided
Case Connection:
"D24" Models
"D48" Models
Pin 2 (–VIN)
Pin 1 (+VIN)
Case Material
Corrosion resistant steel with
epoxy-based enamel finish
Pin Material
Brass, solder coated
Weight
0.7 ounces (20 grams)
Filtering and Noise Reduction
All BWR 5 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 low-ESR, tantalum or electrolytic capacitors across the input
and/or output terminals. Output capacitors should be connected between
their respective output pin (pin 3 or 6) and Common (pin 4)as shown in
Figure 2. The capacitors should be located as close to the power converters
as possible. Typical values are listed below. In many applications, using
values greater than those listed will yield better results.
➀ These power converters require a minimum 20% 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 on request. Contact DATEL Applications Engineering for details.
➂ Units can be screened or modified for higher guaranteed isolation voltages.
Contact DATEL Applications Engineering for details.
➃ Units can be screened for lower-temperature operation.
Contact DATEL Applications Engineering for details.
To Reduce Input Ripple
"D24" Models
"D48" Models
20µF, 50V
10µF, 100V
To Reduce Output Ripple
±5V Outputs
±12/15V Outputs
47µF, 10V, Low ESR
33µF, 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.
3
XWR Series
M I N I AT U R E , 5 WAT T D C / D C C O N V E R T E R S
Typical Performance Curves (TA = +25°C)
The performance curves below were derived from actual test data for a single model number (BWR-15/165-D24).
Since all devices in this series have the same circuit topology, the performance curves are representative of all devices.
E F F I C I E N C Y V S . I N P U T VO LTAG E A N D O U T P U T L OA D
Efficiency vs. Output Load
(VIN = nominal = 48V. Guaranteed efficiency at full load = 80%)
85
84
84
82
Efficiency (%)
Efficiency (%)
Efficiency vs. Input Voltage
(Full-load conditions. Guaranteed efficiency = 80% at VIN = 48V )
83
82
81
80
80
78
76
74
79
72
36
42
48
54
60
66
72
33
66
99
132
165
Output Currents (±mA)
Input Voltage (Volts)
L OA D R E G U L AT I O N
Output Voltage vs. Load (Balanced)
(VIN = nominal = 48V. Nominal VOUT span = 30V)
Output Voltage vs. Load (Unbalanced)
(VIN = nominal = 24V. Load on +VOUT fixed at 165mA)
15.20
Output Voltage (±Volts)
Output Voltage Span (Volts)
30.3
30.2
30.1
30.0
29.9
29.8
29.7
15.10
+VOUT
15.05
15.00
14.95
14.90
–VOUT
14.85
14.80
35
45
55
65
75
85
95
35
105 115 125 135 145 155 165
Output Currents (±mA)
Output Voltage vs. Input Voltage
(Full-load conditions. Nominal VOUT span = 30V)
30.3
30.2
30.1
30.0
29.9
29.8
29.7
36
40
44
48
52
56
60
55
75
95
115
135
–VOUT Output Current (mA)
L I N E R E G U L AT I O N
Output Voltage Span (Volts)
15.15
64
68
72
Input Voltage (Volts)
4
155
175
BWR Models
M I N I AT U R E , 5 WAT T D C / D C C O N V E R T E R S
E M I R A D I AT E D E M I S S I O N S
+OUTPUT
If you’re designing with EMC in mind, please note that all of DATEL’s BWR 5
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
appear below. Its performance is typical of all models in the Family.
Published EMC test reports are available for each model number. Contact
DATEL’s Applications Engineering Department for details.
3
+
1
+INPUT
COUT
4
+
COMMON
CIN
2
+
–INPUT
COUT
6
–OUTPUT
Radiated Emissions
FCC Part 15 Class B, 3 Meters
Converter Output = ±15Vdc @ ±132mA
Figure 2. Using External Capacitors to Reduce
Input/Output Ripple/Noise
80
70
Radiated Emissions (dBµV/M)
60
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For DATEL BWR
5 Watt DC/DC Converters, you should use slow-blow type fuses with values
no greater than 0.5A.
FCC Class B Limit
50
40
30
20
10
0
Radiated Emissions
C U S T O M
–10
C A P A B I L I T I E S
–20
1000
100
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!
Frequency (MHz)
Radiated Emissions
EN 55022 Class B, 10 Meters
Converter Output = ±15Vdc @ ±132mA
Our experienced applications and design staffs; quick-turn prototype capability; highly automated, SMT assembly facilities; and in-line SPC qualitycontrol 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.
80
70
Radiated Emissions (dBµV/M)
60
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.
50
EN 55022 Class B Limit
40
30
20
10
0
Radiated Emissions
–10
–20
1000
100
Frequency (MHz)
®
®
INNOVATION and EXCELLENCE
ISO-9001 REGISTERED
DS0318
7/01
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444
DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01
DATEL GmbH München, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com
Email: [email protected]
Data Sheet Fax Back: (508) 261-2857
DATEL 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. The DATEL logo is a registered DATEL, Inc. trademark.
5