M3G2803R312T Datasheet, PDF (1/10 Pages) International Rectifier – HYBRID-HIGH RELIABILITY RADIATION HARDENED DC-DC CONVERTER

PD-95890D
HYBRID-HIGH RELIABILITY
RADIATION HARDENED
DC-DC CONVERTER
M3G2803R312T
28V Input, Triple Output
Description
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. All components are fully derated
to meet the requirements of MIL-STD-975, MIL-STD-
1547 and GSFC PPL-21 Appendix B.
The converters incorporate a fixed frequency single
ended forward topology with magnetic feedback and
an internal EMI filter. 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.
M3G
Features
n Total Dose > 200 Krad(Si),
typically usable to > 300 KRad(Si)
n SEE Hardened to LET up to 82 MeV.cm²/mg
n Internal EMI Filter, Converter capable of
meeting MIL-STD-461C CEO3
n Low Weight, < 110 grams
n Magnetically Coupled Feedback
n 18V to 50V DC Input Range
n Up to 33W Output Power
n Main Output Isolated from Dual Outputs
n High Efficiency - to 80%
n -55°C to +125°C Operating Temperature Range
n 100MΩ @ 500VDC Isolation
n Under-Voltage Lockout
n Synchronization Input and Output
n Short Circuit and Overload Protection
n Output Over Voltage Limiter
n External Inhibit
n > 5,000,000 Hour MTBF
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.
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.
Applications
n Geostationary Earth Orbit Satellites (GEO)
n Deep Space Satellites / Probes
n Strategic Weapons and Communication
Systems
www.irf.com
1
03/01/10