08/11/06

www.irf.com

1

HYBRID - HIGH RELIABILITY

RADIATION HARDENED

DC/DC CONVERTERS

ARH28XXS SERIES

Description

n Total Dose > 100 krad (Si), 2:1 Margin

n Derated per MIL-STD-975 & MIL-STD-1547

n Output Power to 30 Watts

n Regulates to No-Load

n 18 to 50 Volt Input Range

n Input Undervoltage Lockout

n Fully Characterized from -55°C to +125°C

n Continuous Short Circuit Protection

n True Hermetic Package

n External Inhibit Port

n Externally Synchronizable

n Fault Tolerant Design

n Available with Outputs from 2.5V to 15V

n Overload Protection

n Standard Microcircuit Drawings Available

Features

ARH

28V Input, Single Output

The ARH Series of DC/DC converters has been

designed specifically for use in the hostile environments

The high level of radiation tolerance inherent in the

ARH design is the result of extensive research, thorough

analysis and testing and of careful component

specification. Designed to supplement the triple output

configuration provided by the ART series, the ARH

circuit topology is the follow-on to the successful ART

design and incorporates many of the design features

characterizing that product line. Capable of uniform

high performance over long term exposures in radiation

intense environments, this series expands the standard

for distributed power systems demanding high

performance and reliability in the harsh environments.

The ARH converters are hermetically sealed in a

rugged, low profile package utilizing copper core input

and output pins to minimize resistive DC losses. Long-

term hermeticity is assured through use of parallel seam

welded lid attachment along with rugged ceramic pin-

to-package seal. Axial orientation of the leads facilitates

preferred bulkhead mounting placing the converter on

the principal heat-dissipating surface.

Manufactured in a facility fully qualified to MIL-PRF-

38534, these converters are fabricated utilizing DSCC

qualified processes. For available screening options,

refer to device screening table in the data sheet.

Variations in electrical, mechanical and screening

specifications can be accommodated. Contact IR Santa

Clara for special requirements.

PD-95887A