a
FEATURES
28 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
28 V, 200 W Pulsed DC/DC Converter
with Integral EMI Filter
ADDC02808PB
FUNCTIONAL BLOCK DIAGRAM
–SENSE
+SENSE
ADJUST
STATUS
RETURN
V
AUX
INHIBIT
SYNC
I
SHARE
TEMP
–V
IN
+V
IN
EMI FILTER
INPUT SIDE
CONTROL
CIRCUIT
FIXED
FREQUENCY
DUAL
INTERLEAVED
POWER TRAIN
RETURN
OUTPUT
FILTER
RETURN
+V
OUT
+V
OUT
+V
OUT
OUTPUT SIDE
CONTROL
CIRCUIT
ADDC02808PB
APPLICATIONS
Distributed Power Architecture for Driving T/R Modules
Motor and Actuator Drivers
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADDC02808PB 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.
The unit is designed for high reliability and high performance
applications where saving space and/or weight are critical.
The ADDC02808PB 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.
The ADDC02808PB is available in a hermetically sealed,
molybdenum based hybrid package and is easily heatsink
mountable. Three screening levels are available, including
military SMD.
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: 85 grams
4. Operational and survivable over a wide range of input condi-
tions: 16 V–50 V dc; survives low line, high line
5. High reliability; NAVMAT derated
6. Protection features include:
Output Overvoltage Protection
Output Short Circuit Current Protection
Thermal Monitor/Shutdown
Input Overvoltage Shutdown
Input Transient 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
REV. A
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1998
AD [ ANALOG DEVICES ]
