09/12/12

www.irf.com

1

HYBRID - HIGH RELIABILITY

RADIATION HARDENED

DC-DC CONVERTER

M3G-SERIES

Description

n Total Dose > 200KRad(Si),

typically usable to > 300KRad(Si)

n Low Weight, < 110 grams

n Low Input & Output Noise

n Magnetically Coupled Feedback

n 60V to 120V DC Input Range

n Up to 40W Output Power

n Single and Dual Output Models Include

3.3, 5, 12, 15,

n High Efficiency - to 82%

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

n Under-Voltage Lockout

n Short Circuit and Overload Protection

n Output Over Voltage Limiter

n Remote Sense on Single Output Models

n Adjustable Output Voltage for Duals

n Synchronization Input and Output

n External Inhibit

n > 5,000,000 Hour MTBF

Features

70V Input, Single/Dual Output

Applications

n Geostationary Earth Orbit Satellites (GEO)

Non-flight versions of the M3G-Series converters are

available for system development purposes. Variations

in electrical specifications and screening to meet custom

requirements can be accommodated.

The M3G-Series of DC-DC converters are radiation

hardened, high reliability converters designed for

extended operation in hostile environments. Their small

size and low weight make them ideal for applications

such as geostationary earth orbit satellites and deep

space probes. They exhibit a high tolerance to total

ionizing dose, single event effects and environmental

stresses such as temperature extremes, mechanical

shock, and vibration.

n Deep Space Satellites / Probes

n Strategic Weapons and Communication

Systems

The converters incorporate a fixed frequency single

ended forward topology with magnetic feedback and

an internal EMI filter that utilizes multilayer ceramic

capacitors that are subjected to extensive lot screening

for optimum reliability. By using two stage filtering these

converters produce low input and output noise. External

inhibit and synchronization input and output allow these

converters to be easily incorporated into larger power

systems. They are enclosed in a hermetic 3" x 2" x 0.475"

package constructed of an Aluminum-Silicon-Carbide

(AlSiC) base and an Alloy 48 ring frame and they weigh

less than 110 grams. The package utilizes rugged

ceramic feed-through copper core pins and is sealed

using parallel seam welding.

M3G

Manufactured in a facility fully qualified to MIL-PRF-

38534, these converters are fabricated utlizing DLA

Land and Maritime qualified processes. For available

screening options, refer to device screening table in the

data sheet.

PD-94532O