Isolated DC-DC Converters for the Rail Transportation Industry

The RailQor^® converter series is composed of next-generation, board-mountable, isolated, fixed switching frequency DC-DC converters that use synchronous rectification to achieve extremely high power conversion efficiency, even at low output power levels. The Quarter-brick 25-50 W Mega Series has power dissipation so low that no heatsink is necessary to operate at 85°C in an enclosed environment without airflow. Each module is supplied completely encased to provide protection from the harsh environments seen in many industrial and transportation applications.

• General Specifications
  • Operating Temperature -40ºC to +100ºC
  • Output Voltage Set Point ±1.0%
  • Output Voltage Ripple <1% of Vout (typ.) pk-pk
  • Switching Frequency 240 - 350 kHz
  • Output Voltage Trim Range +10% to -20% / +10% to -50% (HZ only)
  • Isolation Voltage Up to 3000 Vdc
  • EN50155 Compliance
  • RIA 12 Compliance with external circuit Industry standard pin-out configurations and standard footprints
• Protection/Control Features
  • Input under-voltage lockout
  • Output current limit and short circuit protection
  • Active back bias limit prevents damage to converter
  • Output over-voltage protection
  • Thermal shutdown
• Operational Features
  • High efficiency at full load up to 93%
  • Quarter-brick 25-50 W Mega Series has no derating in environments with zero airflow and ambient temperatures up to 85°C with no heatsink
  • Input voltage ranges: 9-36 V, 18-45 V, 18-75 V, 42-110 V, 12-155 V, 34-160 V and 66-160 V
  • Input voltage ranges meet the requirements of EN 50155
  • Full power operation at baseplate temperature range from -40°C to 100°C.
  • Output power up to 500 W
  • Fixed frequency switching, low output noise
  • No minimum load requirement
  • Encased module to provide protection from harsh environments and available with optional flanged style baseplate.
  • Digital Output Current Sharing (HZ only)