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TECHNICAL
FUNCT IONAL BLOCK DIAGRAM
OUTPUT SIDE
CONTROL
CIRCUIT
INPUT SIDE
CONTROL
CIRCUIT
EMI FILTER
OUTPUT
FILTER
+V
OUT
+V
OUT
+V
OUT
RETURN
+ SENSE
ADJUST
STATUS
V
AUX
INHIBIT
SYNC
I
SHARE
–V
+V
FIXED
FREQUENCY
DUAL
INTERLEAVED
POWER TRAIN
– SENSE
RETURN
RETURN
REV. 0
Information furnished by Analog Devices is believed to be accurate and
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
ADDC27008PB
FEATURES
270 V dc Input, 8 V dc @ 25 A, 200 W Pulse Output
Integral EMI Filter
Ultrafast Transient Response
Minimal Output Voltage Deviation
Low Weight: 80 Grams
NAVMAT Derated
Many Protection and System Features
APPLICATIONS
Distributed Power Architecture for Driving T/R Modules
Motor and Actuator Drivers
GE NE RAL DE SCRIPT ION
T he ADDC27008PB hybrid military dc/dc converter is com-
pensated specifically for pulse applications where fast transient
response and minimum output voltage deviation are required.
It is also designed to deliver very high, pulsed output power.
T he unit is designed for high reliability and high performance
applications where saving space and/or weight are critical.
T he ADDC27008PB has been characterized over a wide variety
of load conditions. Its transient response has been set to insure
output stability over a broad range of load capacitance. For
applications that require factory modified compensation
optimized for a specific load, or for applications that require a
different output voltage than 8 V dc, contact the factory.
T he ADDC27008PB is available in a hermetically sealed,
molybdenum based hybrid package and is easily heatsink
mountable. For MIL-ST D-883 devices, contact the factory for
availability.
270 V 200 WPulsed DC/DC Converter
wth Integral EM Filter
PRODUCT HIGHLIGHT S
1. 120 W/cubic inch pulsed power density with an integral EMI
filter
2. Ultrafast transient response time with minimum output
voltage deviation
3. Light weight: 80 grams
4. Operational and survivable over a wide range of input
conditions: 160 V–440 V dc; survives low line, high line
5. High reliability; NAVMAT derated
6. Protection features include:
Output Overvoltage Protection
Output Short Circuit Current Protection
T hermal Monitor/Shutdown
Input Overvoltage Shutdown
Input T ransient Protection
7. System level features include:
Current Sharing for Parallel Operation
Logic Level Disable
Output Status Signal
Synchronization for Multiple Units
Input Referenced Auxiliary Voltage Supply
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