IR – Hi-Rel Radiation Hardened DC/DC Converter for 100V Bus

IRF-HiRelThe M3N-Series of DC-DC converters are radiation hardened, high reliability devices designed for radiation environments such as those encountered by geostationary earth orbit satellites, deep space probes and communication systems. Features include up to 40watt output power, small size, low weight and a high tolerance to total ionizing dose and heavy ion single event effects (SEE). They are designed to withstand environmental stresses such as temperature extremes, mechanical shock and vibration. All components are fully de-rated to meet the requirements of MIL-STD-975, MIL-STD1547 and NASA EEE-INST-002. Extensive documentation including thermal, electrical stress, reliability (MTBF), worst case analyses are available.

The converters incorporate a fixed frequency single ended forward topology with magnetic feedback and an internal EMI filter. These converters are capable of meeting the conducted emissions and susceptibility of MIL-STD461F. They include an external inhibit port and adjustable output voltage pin. Each converter is encased in a hermetic package. They measure 3.0″ x 2.0″ x 0.445” and weigh less than 125 grams. The package utilizes rugged ceramic feed-through copper core pins and is sealed.

Non-flight versions of the M3N-Series converters are available for system development purposes. Variations in electrical specifications and screening to meet custom requirements can be accommodated.

Features: 100V Input, Single/Dual and Triple Output

  • Total Dose Guaranteed to 100 kRads(Si)IR -M3N Series
  • SEE with LET up to 64 MeV.cm2/mg
  • Low Input & Output noise
  • Low Weight < 125 grams
  • Magnetically coupled Feedback
  • 65V to 110V DC Input Range
  • Up to 40W Output Power
  • Single and Dual Output Models include 3.3, 5, 12, 15 and +/-5, +/-12 and +/-15V
    Triple Output Models include +5V, +/-12V or +/-15V
  • High Efficiency up to 83%
  • -55°C to +125°C Operating Temperature Range
  • Single and Dual Output Modes: 100MΩ @ 100V DC Isolation
    Triple Output Models: 100MΩ @ 200V DC
  • Remote Sense on Single Output Models
  • Adjustable Output Voltage
  • Under-Voltage Lockout
  • Synchronization Input and Output
  • Short Circuit and Overload Protection
  • External Inhibit
  • >5.000.000 MTBF
  • Export classification EAR99


  • Geostationary Earth Orbit Satellites (GEO)
  • Deep Space Satellites / Probes
  • Strategic Weapons and Communication System