The primary switched DC / DC converters with 400W output power of MTM Power®, the specialist for individual power supplies, are especially designed for automotive applications. They operate according to the push-pull principle; for instance the input DC-voltage is chopped by two push-pull working transistors with a frequency of approximately 60 kHz.

With the help of a transformer and a secondary linear choke, a galvanically isolated output voltage (12V or 24V) is produced, which is adjusted by pulse-width modulation according to the current mode principle.

The PCMD400W series is available with input voltages such as 36VDC (26VDC to 60VDC), 72VDC (43VDC to 101VDC), 80VDC (55VDC to150VDC) and 110VDC (66VDC to 154VDC) and can be connected via screw connectors. The dimensions of the devices, which are available in an aluminium case, are 150mm x 86mm x 55mm (length x width x height).

Due to this compact design, they are also suitable for applications where only little space is available. The converters need no ground load, are maintenance-free and short-circuit protected by primary and secondary power limitation. They are vacuum potted, prepared for the use in devices with Protection Class II and fulfil the low voltage directive. As an option, they are available for the use in railway applications.

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.

For more information, please contact MTM Power.