M3GB2800T_15 Datasheet, PDF (1/11 Pages) International Rectifier – 28V Input, Triple Output

PD-97824
HYBRID-HIGH RELIABILITY
RADIATION HARDENED
DC-DC CONVERTER
M3GB-SERIES
28V Input, Triple Output
Description
The M3GB-Series of DC-DC converters are second
generation design of the legacy M3G-Series product
family but with enhanced overall performance. M3GB-
Series is form, fit and functional equivalent to the first
generation M3G-Series. It is designed to be backward
compatible to the M3G-Series. Much the same as the
original M3G-Series, these 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.
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. These converters are capable of
meeting the conducted emissions and conducted
susceptibility requirements of MIL-STD-461C without
any additional components. 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.
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.
Non-flight versions of the M3GB-Series converters are
available for system development purposes. Variations
in electrical specifications and screening to meet custom
requirements can be accommodated.
www.irf.com
M3GB
Features
n Total Dose > 200 kRads(Si),
typically usable to > 300 kRads(Si)
. n SEE Hardened up to 82 MeV cm²/mg
n Internal EMI filter; Converter Capable of
meeting MIL-STD-461C CE03
n Low Weight, < 110 grams
n Magnetically Coupled Feedback
n 18V to 50V DC Input Range
n Up to 40W Output Power
n Triple Output Models Include
Main: +5V
Auxilliary: ±12V or ±15V
n Main Output Isolated from Auxilliary Outputs
n High Efficiency - to 82%
n -55°C to +125°C Operating Temperature Range
n 100MΩ @ 100VDC Isolation
n Under-Voltage Lockout
n Synchronization Input and Output
n Short Circuit and Overload Protection
n Adjustable Output Voltage
n External Inhibit
n > 6,000,000 Hour MTBF
Applications
n Geostationary Earth Orbit Satellites (GEO)
n Deep Space Satellites / Probes
n Strategic Weapons and Communication System
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05/08/15