Railway DC/DC Converters

XP Power extends its offering of wide input range DC/DC converters for railway and rolling stock applications from 8 W to 150 W.

The recently expanded range now consists of the RDD08, RDC20, RDC30, and RDC40 series of 8 W, 20 W, 30 W, and 40 W metal-encapsulated wide range DC/DC converters. Also available, are the RDQ100 and RDQ150 series of 100 W and 150 W quarter and half brick baseplate cooled DC/DC converters. These are all designed for railway and industrial applications. These highly efficient PCB-mounted converters, typically 90%, comply with railway and rolling stock EMC standard EN50121-3-2 and can accommodate a wide range of input voltages. The RDC series are available with either a nominal input of 72 V_DC (range 36 V_DC to 40 V_DC) or 110 V_DC (range 55 V_DC to 176 V_DC). The RDD series are available with ranges of 13 V_DC to 70 V_DC or 42 V_DC to 176 V_DC and the RDQ with 66 V_DC to 160 V_DC.

Combined with their small size, starting at only 1.25" x 0.8" x 0.4" (31.75 mm x 20.32 mm x 10.16 mm), and a high efficiency, the models offer a high power density with minimal wasted heat. The units cover the extended temperature range of -40°C to +100°C, depending on series, with the RDD and RDC series designed for convection cooling and the RDQ for baseplate cooling.

The RDD08, RDC20, and RDC40 are available with either single- or dual-outputs, the RDC30 with single-, dual-, and triple-outputs, and the RDQ with single-outputs. Single-output models are available with 3.3 V_DC, 5 V_DC, 12 V_DC, or 15 V_DC. Duals comprise ±12 V_DC or ±15 V_DC outputs, and triple offering combinations of the same voltages. The RDD08, RDC20, and RDC30 also have a ±5 V_DC 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 20 W to 150 W single output models only. All models feature input to output isolation.

Applications

• Railway/rolling stock