Figure 1. Simplified Schematic
* "D24" models only
Dual Output
BWR Models
Miniature, 1" x 1"
5 Watt, DC/DC Converters
Features
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.
DA TEL’s miniature, full f eatured, 5 W att BWR Models were specifically designed for
today’s demanding distributed po wer architectures in aerospace, marine, telecom and
computer applications. The con verters’ 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 0.5in
3
total volume, these extremely compact, fully regulated
and isolated (1000Vdc) modules are available with ±5, ±12 or ±15 V olt outputs. Input
voltage ranges are either 18-36 V olts ("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 W att modules. They achiev e 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 highspeed 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 finalelectrical tested prior to shipment. Every unit meets DA TEL’s traditional high standards
for quality and long-term reliability .
–V
OUT
+V
OUT
COMMON
V
IN
PWM
*
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048 (U.S.A.) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • Email: datellit@mcimail.com
INNOVATION and EX C ELL E N C E
®
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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 +95
o
C operating temperature
Shielded cases (5 sides)
UL1950, CSA 22.2 No. 234, and IEC950
Modifications and customs for OEM's
Output Power (Watts)
Ambient Temperature (°C)
–25 0 35 40 45 50 55 60 6 5 70 75 80 85 90 9
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
METAL CASE
INSULATED BASE
0.040 ±0.002 DIA.
(1.016 ±0.051)
1.00
(25.40)
0.45
(11.43)
0.20 MIN.
(5.08)
0.200
(5.08)
0.10
(2.54)
1.00
(25.40)
0.800
(20.32)
0.100
(2.54)
0.800
(20.32)
0.200
(5.08)
0.400
(10.16)
0.10
(2.54)
BOTTOM VIEW
3
1
2
4
6
5
MINIATURE, 5 WATT DC/DC CONVERTERS
XWR Series
2
Pin
1
2
3
4
5
6
I/O Connections
Function P4
+Input
–Input
+Output
Common
No Pin
–Output
Notes:
For "D24" models, the case
is connected to pin 2 (–V
IN).
For "D48" models, the case
is connected to pin 1 (+V
IN).
Case C7
Nominal Output Voltages:
±5, ±12 or ±15 Volts
Maximum Output Current
in mA from each output
Input V oltage Range:
D24 = 18-36 Volts (24V nominal)
D48 = 36-72 Volts (48V nominal)
Wide Range Input
Output Configuration:
B = Bipolar
15B WR 165 D48-/ -
➀
T ypical at TA = +25°C under nominal line voltage and full-load conditions unless otherwise noted.
➁
Ripple/Noise (R/N) measured over a 20MHz bandwidth.
➂
Balanced loads, 20% to 100% load.
➃
Nominal line voltage, no-load/full-load conditions.
Performance Specifications and Ordering Guide
➀
Ripple/Noise
➁
(mVp-p, Max.)
VOUT
(Volts)
Output
Package
(Case,
Pinout)
Efficiency
(Min.)
Regulation (Max.)
Line
VIN Nom.
(Volts)
Range
(Volts)Model
Input
IOUT
(mA, Max.)
IIN ➃
(mA, Max.)
Load
➂
BWR-5/500-D24 ± 5 ±500 150 ±2% ±2% 24 18-36 25/282 75% C7, P4
BWR-5/500-D48 ± 5 ±500 120 ±2% ±2% 48 36-72 25/141 75% C7, P4
BWR-12/210-D24 ±12 ±210 150 ±2% ±2% 24 18-36 25/264 80% C7, P4
BWR-12/210-D48 ±12 ±210 150 ±2% ±2% 48 36-72 25/133 80% C7, P4
BWR-15/165-D24 ±15 ±165 150 ±2% ±2% 24 18-36 25/260 80% C7, P4
BWR-15/165-D48 ±15 ±165 150 ±2% ±2% 48 36-72 25/130 80% C7, P4
PART NUMBER STRUCTURE
MECHANICAL SPECIFICATIONS
TEMPERATURE DERATING