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PD - 94530A

ARM28XXT SERIES

28V Input, Three Output

ADVANCED ANALOG

HYBRID - HIGH RELIABILITY

1 MEGA-RAD HARDENED DC/DC CONVERTER

Description

The ARM Series of three output DC/DC converters are

designed specifically for use in the high-dose radiation

environments encountered during deep space plan-

etary missions. The extremely high level of radiation

tolerance inherent in the ARM design is assured as a

result of extensive research, thorough analysis and

testing, careful selection of components and lot verifi-

cation testing of finished hybrids. Many of the best cir-

cuit design features characterizing earlier Advanced

Analog products have been incorporated into the ARM

topology. Capable of uniformly high performance

through long term exposures in radiation intense envi-

ronments, this series sets the standard for distributed

power systems demanding high performance and reli-

ability.

The ARM converters are hermetically sealed in a rug-

ged, low profile package utilizing copper core pins to

minimize resistive DC losses. Long-term hermeticity is

assured through use of parallel seam welded lid at-

tachment along with Advanced Analog鈥檚 rugged ce-

ramic pin-to-package seal. Axial lead orientation facili-

tates preferred bulkhead mounting to the principal heat-

dissipating surface.

Manufactured in a facility fully qualified to MIL-PRF-

38534, these converters are fabricated utilizing DSSC

qualified processes, and are fully compliant to Class H

while being fully processed to the requirements speci-

fied for space. The complete suite of PI tests have been

completed including Group C life test. Variations in

electrical, mechanical and screening specifications

may be accommodated. Contact Advanced Analog for

special requirements.

ARM

Features

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Total Dose > 1MRad (Si)

SEE hard to LET = 83 Mev

.

cm

2

/mg

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

Output Power Range 3 to 30 Watts

19 to 50 Volt Input Range

Input Undervoltage Lockout

High Electrical Efficiency > 80%

Full Performance from -55擄C to +125擄C

Continuous Short Circuit Protection

12.8 W / in

3

Output Power Density

True Hermetic Package

External Inhibit Port

Externally Synchronizable

Fault Tolerant Design

5V,

鹵

12V or 5V,

鹵

15V Outputs Available

www.irf.com

1

09/05/02

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