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  1. MTM Power
17 August 2018

MTM Power Presents New 400W DC/DC Converters at InnoTrans 2018

MTM Power’s PCMD400 series has developed as a well-proven converter series made for applications in vehicle and railway technology in addition to rugged industrial markets.

With a complete redesign of this series MTM Power presents for the first time the new PCMDS400 series of converters using state-of-the-art technology, which at the same time fulfil all applicable standards for the different applications, in Berlin, Germany (Hall 17, Booth 207) at the InnoTrans 2018. The DC/DC converters also now offer a connection with push-in cage clamp connectors.

The devices operate according to the push-pull principle, meaning that the input dc-voltage is chopped by two push-pull working transistors with a frequency of approximately 70kHz.

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 used push-pull topology allows wide input voltage ranges with high efficiencies.

The series PCMDS400 is available with an input voltage of 110VDC. The dimensions of the devices that are available in an aluminium case are 150mm × 86mm × 55mm (length × width × height). Due to this compact design, they are also suitable for applications where only a little space is available.

The converters need no ground load and short-circuit protected by primary and secondary power limitation. The devices have an ‘Output Voltage OK’ signal as potential-free contact, as well as remote control to place the converter in a standby mode with the lowest power consumption.

The maintenance-free converters are vacuum potted (EP 1 987 708, US Patent No 8,821,778 B2) and offer reliable protection against condensation, conductive dust and other environmental conditions.

Further features are a mechanically and electrically rugged design using SMD-technology and an automatic piece-by-piece test. To ensure a smooth operation, it is necessary to mount the converters on a heat-dissipating surface. Alternatively, a version with a heat sink (156.6mm × 162mm × 55mm) is available.

MTM Power is a reputable provider of DC/DC converters for rail applications, as well as AC/DC power supplies.
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