FUNCT IONAL BLOCK DIAGRAM
OUTPUT SIDE
CONTROL
CIRCUIT
INPUT SIDE
CONTROL
CIRCUIT
EMI FILTER
OUTPUT
FILTER
SENSE
REF
SENSE
REF
+ SENSE
ADJUST
STATUS
V
AUX
INHIBIT
SYNC
I
SHARE
TEMP
–V
IN
+V
IN
FIXED
FREQUENCY
DUAL
INTERLEAVED
POWER TRAIN
– SENSE
RETURN
RETURN
+V
OUT
+V
OUT
ADDC02828SA
REV. 0
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reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
ADDC02828SA
FEATURES
28 V dc Input, 28 V dc @ 3.6 A, 100 W Output
Integral EMI Filter Designed to Meet MIL-STD-461D
Low Weight: 80 Grams
NAVMAT Derated
Many Protection and System Features
APPLICATIONS
Commercial and Military Airborne Electronics
Missile Electronics
Space-Based Antennae and Vehicles
Mobile/Portable Ground Equipment
Distributed Power Architecture for Active Array Radar
GE NE RAL DE SCRIPT ION
T he ADDC02828SA hybrid dc/dc converter with integral EMI
filter offers the highest power density of any dc/dc converter
available today with its features and in its power range. T he
converter with integral EMI filter is a fixed frequency, 1 MHz,
square wave switching dc/dc power supply. It is not a variable
frequency resonant converter. In addition to many protection
features, this converter has system level features that allow it to
be used as a component in larger systems as well as a stand-
alone power supply. T he unit is designed for high reliability and
high performance applications where saving space and/or weight
is critical.
T he ADDC02828SA is available in three screening grades; all
grades use a hermetically sealed, molybdenum based hybrid
package. Contact factory for MIL-ST D-883 device availability.
28 V/100 WDC/DC Converter
wth Integral EM Filter
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
PRODUCT HIGHLIGHT S
1. 60 W/cubic inch power density with an integral EMI filter
designed to meet all applicable requirements in MIL-STD-
461D when installed in a typical system setup.
2. Light weight: 80 grams
3. Operational and survivable over a wide range of input condi-
tions: 16 V–50 V dc; survives low line, high line and positive
and negative transients. See Input Voltage Range section.
4. High reliability; NAVMAT derated
5. Protection Features Include:
Output Overvoltage Protection
Output Short Circuit Current Protection
T hermal Monitor/Shutdown
Input Overvoltage Shutdown
Input T ransient Protection
6. System Level Features Include:
Current Sharing for Parallel Operation
Inhibit Control
Output Status Signal
Synchronization for Multiple Units
Input Referenced Auxiliary Voltage Supply