75-W ¼-brick converter targets railway use

The RQS series of railway dc/dc converters offer 75-W regulated output power with nominal railway input voltages of 72 Vdc (43 to 101 Vdc) and 110 Vdc (66 to 160 Vdc). Single outputs offered are 5, 12, 15, and 24 Vdc. The converters use an industry standard quarter brick package that is offered with an optional heat-sink.

The dc/dc converters operate with 92% efficiency and feature remote on/off, output trim, over temperature, overload, and short circuit protection. The operating baseplate temperature range is –40° to +105°C. The units are encapsulated with a thermally conductive potting compound and use a metal baseplate for improved thermal performance. The series meets railway standards EN50155 and EN45545-2, as well as EMC standard EN50121-3-2. The RQS series also meets UL 60950-1 requirements.