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EN50155 Compliant Train-borne DC DC Converters

The on-board environment for rail passengers is improving rapidly with existing rolling stock upgrades and new build. A major factor in these improvements is the provision of modern LED lighting, Wi-Fi and USB to the seat, to do this safely and reliably from the on-board supply requires high quality railway compliant dc dc converters.

The URB series from Mornsun are a range of rugged ultra-wide input dc dc converters, when used in combination with the specially designed FC series input filters they conform to the challenging requirements of EN50155 and RIA12 (up to 30W) for train-borne applications.

There are versions for 24Vdc input (range 9 to 36Vdc); 48Vdc input (range 18 to 75Vdc); The ultra-wide input versions are suitable for traction battery voltages of 72V, 96V, 110V & 120Vdc (range 40 to 160Vdc). Output voltages available are 3.3V, 5V, 9V, 12V, 15V & 24Vdc.

By virtue of their design for the harsh environment of the railway, they are also suitable for many other applications requiring a compact rugged dc dc solution. Available in 6W to 100W packages with industry standard PCB pinouts and available in chassis mount and DIN rail mount packages, with fitted heatsinks an option (15W+).

  • These devices are convection cooled;
  • Conversion efficiencies are up to 88%
  • Isolation for devices up to 20W is 2.25kVdc, from 50W to 100W is 3.0kVdc
  • All models meet EN50155 standards when used with the relevant filter
  • Built-in protection is included for input under-voltage; output over-voltage, over-current and short-circuit

Applications include: Passenger reading lights; On-board Wi-Fi; Passenger USB hubs; Sensor control modems. The URB series and the filters are very competitively priced with short lead times of just 4 weeks as standard.

For further information or to discuss your application please contact Relec Electronics on +44 1929 555800. Visit us at Railtex, stand N68.

Relec Electronics Ltd

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