Hi-Rel Power Solutions

DC-DC Converter Solutions

Micross Hi-Rel Power Solutions is a leader in power management solutions for high reliability and space applications. Located in San Jose, California, the facility is DLA certified Class K to design and manufacture ruggedized hermetic hybrid DC-DC converters. The group is supported by design centers in Herlev, Denmark for spacecraft power system designs and complex power conversion system solutions, and silicon design center in El Segundo, California. Decades of heritage in high reliability applications signify the company’s unwavering commitment to deliver nothing but the very best in power management solutions to the defense, aerospace, and space industries.

Our standard and radiation-hardened converters are at the heart of systems powering mankind’s most missioncritical applications. You’ll find us throughout the world and above it, in commercial and military aircraft, missiles, smart munitions, weapon systems, launch vehicles, LEO/MEO satellites, and GEO satellites.

Micross Hi-Rel Power Solutions’ steady thrust in crafting the best in technology with the best in technique for the industry has resulted in highly reliable solutions rich in innovation and unmatched in ability. Micross Hi-Rel Power Solutions’ new 89% efficient, all-hybrid Electronic Power Conditioner (EPC) developed for spacecraft is but one example.


  • Standard HiRel converters for military, aerospace and rugged industrial applications
  • Radiation Tolerant converters for low to moderate radiation environments total ionizing dose 25-30krad; Single Event Effect (SEE) rating with LET of 37-60 MeV*cm2/mg
  • Radiation Hardened converters for harsh environments total ionizing dose is 100k-1Mrad; SEE rating with LET of > 83 MeV•cm2/mg. HiRel converters for Space Applications
  • Input EMI filters, either internal or external to standard converters, for providing EMC compliance to MIL-STD-461C and the latest revision of the conducted emission requirements
  • Custom converter designs for customer-specific requirements

MIL-PRF-38534 Screening Quality Conformance Inspection Requirements


  • Input voltages from 11VDC - 500VDC
  • Operating input voltage ratio typically 3:1
  • Nominal inputs of 15, 28, 50, 70, 120, 270VDC
  • Standard output voltages from 1.5V - 200V
  • Output power from 5W to 400W
  • Single, dual and triple output configuration
  • I/O isolation >100mΩ @500VDC
  • Operating temperature from -55ºC +125ºC

  • Process, Design and Manufacturing Expertise
  • Honed for Aerospace and Defense
  • Input-Output isolation
  • Active inrush current limiting
  • Fixed switching frequency
  • Common frequency synchronization
  • Soft start
  • Short-circuit and overload protection
  • Input undervoltage lockout
  • Duty cycle limiting over-voltage protection
  • Output turn-on/turn off sequencing
  • Operation over -55°C to +125°C without de-rating
  • Magnetically-coupled feedback
  • TTL-compatible on/off command
  • Isolated pulse on/off command
  • Independent output voltage regulation
  • Parallel operation with equal current rating
  • Low profile, hermetically-sealed packages
  • Copper I/O pins
  • MIL-STD-461 EMI compliance
  • Class H and Class K processes (IAW MIL-PRF-38534)
  • Immunity to TID, SEE, neutron and prompt dose radiation environments in space
  • Reliability screening option

Downloads & Resources


Hybrid DC-DC Converters

Ruggedized DC-DC converters, rad-hard PCB open frame and enclosed power supplies

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PCB DC-DC Converters

Rad-Hard PCB based DC-DC power supplies with key features and tailored to customers requirements

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EMI Filters

Complementary to our hermetic hybrid DC-DC converters offering a range of input voltages and packages

More info

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