The PCMDS150WK-IP65 primary switched DC/DC converters from MTM Power are specially designed for applications in vehicle and rail technology but also for use in industrial and telecommunication applications. The push-pull topology used while developing these converters enables a wide input voltage range with high efficiency. Thus the 150W converters are available with a wide input range for battery voltages of 24V, 36V, 48V, 60V, 72V, 80V, 96V and 110V according to EN 50 155.
With the help of a transformer and a secondary linear choke, a galvanically isolated output voltage of 24V is produced, which is adjusted by pulse-width modulation according to the current mode principle. The dimensions are 192mm x 115mm x 68mm (length x wide x height). The thermo-selective vacuum encapsulation guarantees uniform heat dissipation within the modules as well as excellent resistance against environmental influences such as shock, vibration and moisture.
A remarkable feature of the converters is that they are suitable for applications with IP65 protection degree and thus comply with EN 60 068-2-1/2-2/2-11/2-14/2-30. The converters need no ground load and are short-circuit protected by primary and secondary power limiting.
The converters are maintenance-free, prepared for use in devices with Protection Class II and fulfil the low-voltage directive. They show a mechanically and electrically rugged design using SMD technology and undergo an automatic piece-by-piece test. Cooling is achieved by free convection. The converters without heat sink have to be mounted on a heat-dissipating surface.