IR – Hybrid High-Reliability Radiation-Hardened DC-DC Converter

International Rectifier (distributor: KAMAKA Electronic) announces the M3GB-Series. This series of DC-DC converters are second-generation design of the legacy M3G-Series product family but with enhanced overall performance. M3GBSeries is the form, fit and functional equivalent to the first generation M3G-Series.

IRIt is designed to be backward compatible to the M3G-Series. 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. 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.

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.

Features of the 70V input, single/dual output:

  • Total Dose > 200 kRads(Si), typically usable to > 300 kRads(Si)
  • SEE Hardened to LET up to 82 MeV.cm2/mg
  • Low input and output noise
  • Low weight, < 110 grams
  • Magnetically coupled feedback
  • 60V to 120V DC input range
  • Up to 40W output power
  • Single and dual output models include 3.3, 5, 12, 15, +/-5, +/-12 and +/-15V
  • High efficiency to 82%
  • -55°C to +125°C operating temperature range
  • 100MΩ @ 100VDC isolation
  • Under-voltage lockout
  • Short circuit and overload protection
  • Remote sense on single output models
  • Adjustable output voltage for all models
  • Synchronization input and output
  • External inhibit
  • > 7,000,000 hour MTBF

Features of the 70V input, triple output:

  • Total dose > 200 kRads(Si), typically usable to > 300 kRads(Si)
  • SEE hardened up to 82 MeV.cm2/mg
  • Low input and output noise
  • Low weight, < 110 grams
  • Magnetically coupled feedback
  • 60V to 120V DC input range
  • Up to 40W output power
  • Triple output models include main: +5V, Auxilliary: +/-12V or +/-15V
  • Main output isolated from auxilliary outputs
  • High efficiency to 82%
  • -55°C to +125°C operating temperature range
  • 100MΩ @ 100VDC isolation
  • Under-voltage lockout
  • Synchronization input and output
  • Short circuit and overload protection
  • Adjustable output voltage
  • External inhibit
  • > 6,000,000 hour MTBF

 

Applications

  • Geostationary Earth Orbit Satellites (GEO)
  • Deep space satellites / probes
  • Strategic weapons and communication systems

KAMAKA Electronic Bauelemente Vertriebs GmbH will be exhibiting at Space Tech Expo Europe 2017 in stand F41