EN50121-3-2 Certified DC-DC Converters for Railway Systems

XP Power plc today announced the RDC20 and RDC40 series of 20-W and 40-W metal-encapsulated wide-range dc-dc converters designed for railway and industrial applications. These PCB-mounted converters have typical efficiencies of 90%, comply with railway and rolling stock EMC standard EN50121-3-2, and can accommodate a wide range of input voltages. Both series are available with either a nominal input of 72Vdc (a range of 36- to 140-Vdc) or 110Vdc (a range of 55- to 176-Vdc).

Combined with their small size, the RDC20 measuring only 1.0 x 2.0 x 0.4 inches (25.4 x 50.8 x 10.16 mm), and a high efficiency, the RDC20 and RDC40 offer a high power density with minimal wasted heat. Both series can be used over the extended temperature range of -40 degrees C to +85 degrees C and can operate to full power using convection cooling up to +50 degrees C or up to +60 degrees with an optional heat sink. Maximum case temperature is +105 degrees C.

Both series are available with either single or dual outputs. Single output models are available with +3.3, +5, +12 or +15 Vdc. Duals comprise ± 12 or ± 15 Vdc outputs. The RDC20 also has a ± 5 Vdc dual-output option. Standard controls and signals include remote On/Off, output over-voltage, input under-voltage and over-current protection. An output trim function provides ± 10% adjustment from stated nominal output on single-output models only.

Basic input to output isolation is up to 1500 Vac and input/output to case is 1600 Vdc. The RDC20 and RDC40 series complement the existing line up of RDC30 30 Watt converters. The RDC20 series is priced at $70.20 for 500 pcs orders and come with a 3-year warranty.