RailQor DC-DC Converters
    SynQor's ruggedized DC-DC converters... the power behind transportation
RailQor Series Isolated DC-DC Converters The RailQor line of DC-DC converters is designed to provide isolated dc power in the transportation industry for such electronics as LED displays, audio amplifiers, safety monitors, lighting, and communications systems under the European Standard EN 50155.  These converters use SynQor's synchronous rectifier based technology to achieve extremely effiicient industry leading performance.  Due to the difficult environmental conditions the transportation market poses on power supplies, SynQor has designed the RailQor line for optimal performance in the most demanding applications.
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Product Part Numbering Convention
Product Part Numbering Convention
Package Dimension Drawings
EN50155 Application Information
EN50155 Input Specifications
Nom. Input Input Range Transients SynQor Input Range
Vin 0.7-1.25(Vin) 0.6Vin 0.1s 1.4Vin 1s Steady State Transient (0.1s)
24V 17-30V 14V 34V 9-36V 40V
72V 50-90V 43V 110V 42-110V N/A
110V 77-137V 66V 160V 66-160V 170V
Qualification Highlights
    SynQor EN50155 Qualification
  • Temperature/Relative Humidity Test
        Non Biased
        55C, 95% RH
        10 hours
  • Operating Temperature Test
        VIN Nominal, Full Load, Continuous
        85C for 6 hours, 2 hours at -40C
  • Electrical Test - Functional ATE Test
    SynQor Standard Qualification
  • Life Test - 95% line and load, 1000 hours
  • Vibration - 10-55Hz, 0.06", 1 min/sweep, 120 sweeps for 3 axis
  • Mech. Shock - 100G, 3 drops each axis
  • Temp Cycle - -40C to 100C, 15C/min ramp, 500 cycles
  • Power/Thermal Cycle - Temp min to max, VIN min to max, full load, 100 cycles
  • Design Marginality - TMIN-10C to TMAX+10C, 5C steps, VIN min to max, 0 to 105% load
  • Humidity - +85C, 85% RH, 1k hours
  • Solderability - MIL-STD-883, method 2003
  • Electrical Test - ATE test to post-qualification limits