M3G500512T Datasheet, PDF (1/10 Pages) International Rectifier – HYBRID - HIGH RELIABILITY RADIATION TOLERANT DC/DC CONVERTER

PD-94559H
HYBRID - HIGH RELIABILITY
RADIATION HARDENED
DC-DC CONVERTER
M3G-SERIES
50V 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 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
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 up to 82 MeV cm²/mg
n Low Weight, < 110 grams
n Low Input & Output Noise
n Magnetically Coupled Feedback
n 38V to 60V DC Input Range
n Up to 40W Output Power
n Triple Output Models Include
+5V and ±12V or ±15V
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
05/07/10