This fully encapsulated, dual output, railway quality DC/DC converter uses a field‐proven high-efficiency power conversion topology to generate 250W output power. The unit has two fully independent, regulated isolated output stages, V1 providing up to 140W and V2 up to 110W. The design is based on the field‐proven RWY 150 and RWY 100 series topology, which has a track record in numerous applications. It is entirely potted with a thermally conductive MIL‐grade silicon rubber compound to ensure immunity to shock, vibration and humidity. The unit is conduction cooled via a base plate to a heat‐sinking surface. Low component count, large design headroom, and the use of components with established reliability result in a high MTBF. It meets the requirements of EN50155 for Electronic equipment used on rolling stock. The unit is also suitable for transportation, mining, military, marine and other harsh environments.

SERIES TABLE

Model Output ( V1) Output ( V2) Power (W)
RWY252H Any voltage
5V – 110V limited
to 12A / 140W
Any voltage
5V – 110V limited
to  8A / 110W
   250W

SPECIFICATIONS TABLE

Operating input voltage range 24VDC   ( 14.4 ~ 34 )
36VDC   ( 22 ~ 51 )
48VDC   ( 20 ~ 67)
72VDC   ( 43 ~ 101)
96VDC   ( 58 ~ 135)
110VDC   ( 66 ~ 154)
Input Protection Reverse polarity protection.Inrush current limiting Lower voltage than specified will not damage unit
Output Voltage See  table
Regulation ±1% Line / Load combined
Operating Temp:  -40ºC to +70ºC cold plate temperature
Efficiency Model dependent , typically 80-90%
Dynamic Response Max ±5% diviation for 10% – 50% load step wuth 1msec recovery
MTBF >160,000 hrs

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