Description
Hi-Rel Isolated Converters
High-Reliability , Field Proven DC-DC Converters for Military/Avionics Applications
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.
Hi-Rel Product Features
- Fixed switching frequency
- No opto-isolators
- Parallel operation with current share on MQFL
- Remote sense
- Clock synchronization
- Primary referenced enable
- Secondary referenced enable on MQFL
- Continuous short circuit and overload protection with auto-restart feature
- Input under-voltage and over-voltage shutdown
- Output voltage trim range
- (MQHL, MQHR & MQBL) +10% to -10%
- -55°C to +125°C Operating Temperature
Design Process
Hi-Rel Series Converters are:
Designed for reliability per:
- NAVSO P-3641A guide
Designed with components derated per:
- MIL-HDBK-1547A
- NAVSO P-3641A
Mechanical
- QorSeal® packaging
- Industry standard footprint for MQFL & MQME
- Multiple mounting configurations and lead form options
- Gold plated nickel barrier finish on an extruded aluminium case
Our unique QorSeal® packaging approach provides a conduction-cooled mechanical assembly around an SMT constructed power circuit that is low-profile, light-weight, and shielded. This process provides three levels of
Tin Whisker mitigation.
Qualification Process
Hi-Rel Series Converters are qualified to:
- MIL-STD-810 consistent with RTCA/DO-160
- Synqor’s first Article Qualification , consistent with MIL-STD-833
- SynQor’s Long-Term Storage Survivability Qual
- SynQor’s on-going life test
- SynQor’s element evaluation for HB & ES Grade
Specification Compliance
Hi-Rel series converters (with Hi-Rel filter) are designed to meet:
- MIL-HDBK-704
- RTCA/DO-160 Section 16, 17, 18
- MIL-STD-1275 (B, D)
- DEF-STAN 61-5 (Part 6)/(5, 6)
- MIL-STD-461 (C, D, E, F)
- RTCA/DO-160 (E, F, G) Section 22
