28 V, 200 W Pulsed DC/DC Converter
with Integral EMI Filter
a
ADDC02808PB
FUNCTIONAL BLOCK DIAGRAM
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
–SENSE
ADDC02808PB
OUTPUT SIDE
CONTROL
CIRCUIT
+SENSE
ADJUST
STATUS
RETURN
RETURN
RETURN
NAVMAT Derated
Many Protection and System Features
V
FIXED
FREQUENCY
DUAL
INTERLEAVED
POWER TRAIN
AUX
INHIBIT
SYNC
OUTPUT
FILTER
INPUT SIDE
CONTROL
CIRCUIT
+V
APPLICATIONS
Distributed Power Architecture for Driving T/R Modules
Motor and Actuator Drivers
OUT
+V
I
OUT
SHARE
+V
TEMP
OUT
–V
+V
IN
EMI FILTER
IN
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.
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
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.
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
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.
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.
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Tel: 781/329-4700
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© Analog Devices, Inc., 1998