M3H280512T Datasheet, PDF (1/8 Pages) International Rectifier – HIGH RELIABILITY RADIATION HARDENED DC/DC CONVERTERS

PD-94518C
HIGH RELIABILITY
RADIATION HARDENED
DC/DC CONVERTERS
M3H-SERIES
+28V Input, Triple Output
Description
The M3H-Series of DC/DC converters are radiation
tolerant, high reliability devices designed for moderate
radiation environments such as those encountered by
low earth orbit satellites and launch vehicles. For higher
radiation environments, the M3G-Series of DC/DC
converters is recommended. System upgrades to higher
radiation tolerance applications can be easily
accommodated with the M3G-Series converters
because they have the same mechanical outline and
are pin compatible. For physically smaller, lower output
power single and dual output applications the L-Series
of DC/DC converters are recommended. Features of the
M3H-Series include up to 40 watt output power, small
size, low weight and 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 and MIL-STD-1547.
Extensive documentation including Radiation
Susceptibility, Thermal Analysis, Stress Analysis and
MTBF are available.
The converters incorporate a fixed frequency single
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. All models include an external inhibit port
and have an adjustable output voltage. They are
enclosed in a hermetic 3.0" x 2.5" x 0.445" steel package
and weigh less than 125 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 DSCC
qualified processes. For available screening options,
refer to device screening table in the data sheet.
www.irf.com
M3H
Features
n Total Dose > 25K Rad(Si)
n SEE Hardened to LET up to 37 MeV.cm²/mg
n Internal EMI filter; Converter Capable of
meeting MIL-STD-461C CE03 and CS01
n Low Weight, < 125 grams
n Magnetically Coupled Feedback
n 18V to 50V Input Range ( 50V, 70V, and
120V Models Available)
n Up to 40W Output Power
n Triple Output Models Include
+5 and ±12 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 Short Circuit and Overload Protection
n External Inhibit
n > 1,500,000 Hour MTBF
Applications
n Low Earth Orbit Satellites (LEO)
n Launch Vehicles
Non-flight versions of the M3H-Series converters
are available for system development purposes.
Variations in electrical specifications and
screening to meet custom requirements can be
accommodated. Consult IR Santa Clara for special
requiremenrs.
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09/08/06