MilQor Hi-Rel DC-DC Converters

Full power operation at -55°C to +125°C meets high reliability needs of the military/aerospace markets.


The MilQor® series of high-reliability DC-DC converters brings SynQor’s field proven high-efficiency synchronous rectifier technology to the Military/Aerospace industry. SynQor’s innovative QorSeal™ packaging approach ensures survivability in the most hostile environments. Compatible with the industry standard format, these converters operate at a fixed frequency, have no opto-isolators, and follow conservative component derating guidelines.


  • Fixed switching frequency
  • No opto-isolators
  • Parallel operation with current share
  • Remote sense
  • Clock synchronization
  • Primary and secondary referenced enable
  • Continuous short circuit and overload protection
  • Input under-voltage lockout/over-voltage shutdown
  • Conduction cooled mechanical packaging
Qualification Process

    Hi-Rel series converters are qualified to:

  • MIL-STD-810F (consistent with RTCA/D0-160E)
  • SynQor’s First Article Qualification (consistent with MIL-STD-883F)
  • SynQor’s Long-Term Storage Survivability Qualification
  • SynQor’s on-going life test
Specification Compliance:

    Hi-Rel series converters (with a Hi-Rel filter) designed to meet (model dependant):

  • MIL-HDBK-704 (A through F)
  • RTCA/DO-160E Section 16
  • MIL-STD-1275D
  • DEF-STAN 61-5 (part 6)/5
  • MIL-STD-461 (C, D, E)
  • RTCA/DO-160E Section 22
Design Process:

    Hi-Rel series converters are:

  • Designed for reliability per NAVSO-P3641-A guidelines
  • Designed with components derated per MIL-HDBK-1547A and NAVSO P-3641A