M3GB2805S Datasheet, PDF (1/13 Pages) International Rectifier – HYBRID - HIGH RELIABILITY RADIATION HARDENED DC-DC CONVERTER

PD-97823A
HYBRID - HIGH RELIABILITY
RADIATION HARDENED
DC-DC CONVERTER
M3GB-SERIES
28V Input, Single/Dual 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 with the addition of an
output voltage adjustment pin for the single output
models. 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 (Al/SiC)
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 to LET 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 Single and Dual Output Models Include
3.3, 5, 5.2, 12, 15, ±5, ±7, ±12 and ±15V
n High Efficiency - to 83%
n -55°C to +125°C Operating Temperature Range
n 100MΩ @ 100VDC Isolation
n Under-Voltage Lockout
n Short Circuit and Overload Protection
n Remote Sense on Single Output Models
n Adjustable Output Voltage for all Models
n Synchronization Input and Output
n External Inhibit
n > 7,000,000 hour MTBF
Applications
n Geostationary Earth Orbit Satellites (GEO)
n Deep Space Satellites / Probes
n Strategic Weapons and Communication System
1
11/10/15