M3H2803R3S_16 Datasheet, PDF (1/12 Pages) International Rectifier – HYBRID-HIGH RELIABILITY RADIATION HARDENED DC-DC CONVERTER

HYBRID-HIGH RELIABILITY
RADIATION HARDENED
DC-DC CONVERTER
PD-94437E
M3H-SERIES
+28V Input, Single/Dual 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 M3L-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 de-rated 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 DLA Land and Maritime
qualified processes. For available screening options, refer
to device screening table in the data sheet.
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 HiRel
San Jose for special requirements.
M3H
Features
 Total Dose > 25 kRads(Si)
 SEE Hardened to LET up to 37 MeV.cm²/mg
 Internal EMI filter; Converter Capable of
meeting MIL-STD-461C CE03 and CS01
 Low Weight < 125 grams
 Magnetically Coupled Feedback
 18V to 50V Input Range
(50V, 70V, and 120V Models Available)
 Up to 40W Output Power
 Single and Dual Output Models Include
3.3, 5, 5.2, 12, 15, ±5, ±12, ±15V
 High Efficiency - to 82%
 -55°C to +125°C Operating Temperature Range
 100M @ 500VDC Isolation
 Under-Voltage Lockout
 Short Circuit and Overload Protection
 Adjustable Output Voltage
 External Inhibit
 1,500,000 Hour MTBF
Applications
 Low Earth Orbit Satellites (LEO)
 Launch Vehicles
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2016-05-19