FUNCTIONAL BLOCK DIAGRAM

RETURN

RETURN

RETURN

ADJUST

STATUS

INHIBIT

SYNC

TEMP

FIXED

FREQUENCY

DUAL

INTERLEAVED

POWER TRAIN

+SENSE

OUTPUT

FILTER

INPUT SIDE

CONTROL

CIRCUIT

EMI FILTER

ADDC02808PB

–SENSE

OUTPUT SIDE

CONTROL

CIRCUIT

REV. A

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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

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a

ADDC02808PB

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

APPLICATIONS

Distributed Power Architecture for Driving T/R Modules

Motor and Actuator Drivers

GENERAL DESCRIPTION

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.

28 V, 200 W Pulsed DC/DC Converter

with Integral EMI Filter

PRODUCT HIGHLIGHTS

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

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