04/17/13

www.irf.com

1

HYBRID-HIGH RELIABILITY

RADIATION HARDENED

LOW POWER

DC-DC CONVERTER

S-SERIES

Description

n Total Dose >100K Rad(Si)

n Low Weight < 50 grams

n Magnetically Coupled Feedback

n 18V to 40V DC Input Range

n Up to 10W Output Power

n Single and Dual Output Models Include

3.3, 5, 7,12,15,

n High Efficiency - to 82%

n -55°C to +125°C Operating Temperature Range

n Under-Voltage Protection

n Short Circuit and Overload Protection

n Output Over Voltage Limiter

n External Inhibit

n Standard Microcircuit Drawings Available

Features

28V Input, Single/Dual Outpu

t

Applications

Non-flight versions of the S-Series converters are

available for system development purposes. Variations

inelectrical specifications and screening to meet custom

requirements can be accommodated.

The converters incorporate a fixed frequency single

ended forward topology with magnetic feedback and

an internal EMI filter utilizing large multilayer ceramic

capacitors processed per MIL-PRF-49470 for improved

reliability. All models include an external inhibit port .

They are encased in a hermetic 1.71” x 1.31” x 0.45”

steel package and weigh less than 50 grams. The

package utilizes rugged ceramic feed-through copper

core pins and is hermetically sealed using parallel seam

welding.

n Geostationary or Low Earth Orbit Satellites

n

Launch Vehicles

n Communication Systems

The S-Series of DC-DC converters are low power

radiation hardened, high reliability devices designed

for hostile radiation environments such as those

encountered by geostationary earth orbit satellites, deep

space probes and communication systems. Features

include small size, high efficiency, low weight and a

high tolerance to total ionizing dose, single event effects,

and environmental stresses such as temperature

extremes, mechanical shock, and vibration. Extensive

documentation including Radiation Susceptibility,

Thermal Analysis, Stress Analysis and MTBF are

available.

Manufactured in a facility fully qualified to MIL-PRF-

38534, these converters are fabricated utilizing DLA

Land and Maritime qualified processes. For available

screening options, refer to device screening table in the

data sheet.

S

PD-94584K