RECOM’s product range includes CE-certified DC/DC converters with input voltages up to 160VDC. The compact 20W to 50W modules are specially designed for the extreme working conditions of railway applications and are designed to meet the stringent conditions of EN50155.
Certified rugged DC/DC converters for the railway industry
Rolling stock operation on trains subjects electronic components to extreme conditions. Voltage fluctuations, extreme temperature and continuous vibration combine to stress components and materials. The RPR-series has been specially designed for such conditions. These rugged DC/DC converters cover the power range from 20W, 30W, 40W or 50W, and are EN60950 and EN50155 compatible for railway applications. The mechanical stability for vibration exceeds the EN61373 specified 10G for 15 hours in all three axes.
The modules feature a built-in EMC filter that is EN50121-3-2 compliant and input over-voltage protection circuitry, therefore eliminating the requirement for any active external components. The RPR converters have three input voltage options that cover the EN50155 nominal voltages of 24VDC, 36VDC, 48VDC, 72VDC, 92VDC or 110VDC. Output voltages are 3.3VDC, 5VDC, 12VDC, 15VDC or 24VDC, as well as dual output voltages of ±12VDC, ±15VDC and ±24VDC. The outputs are fully protected against overload, short circuit and over voltage.
Power converters with high efficiency
All the RPR-series converters have an exceptionally high efficiency of 90%. The heat management was designed in such a way that the converters can perform at full load at ambient temperatures from -45°C to +85°C thus exceeding the EN50155 Tx rating. The maximum allowable case temperature is +120°C. If this value is exceeded for an extended period, a thermal protection circuit switches the converter off until it cools down.