Rugged, dc/dc converter delivers 200W in railway and other harsh environments

Absopulse Electronics’ BAP236R is a rugged dc/dc converter designed for railway and other heavy-duty applications. It utilizes field-proven push-pull topology to deliver 200W at any dc-output voltage from 12V to 120Vdc (12Vdc output at reduced power). BAP236R can be powered from 24Vdc (17–30Vdc range), 36Vdc (25–45Vdc), 72Vdc (50V–90Vdc) or 110Vdc (77V – 137Vdc), with other input voltages available on request. An optional redundancy diode allows parallel connection to achieve higher output power or N+1 redundancy.

The BAP236R meets railway standards EN50155 and EN50121 and international safety approvals including EN60950. It is filtered to meet EN55022 Class B and EN50121-3-2 conducted and radiated EMI. The unit features full electronic protection and 80% efficiency at full load, depending on input voltage. An optional Form C output fail alarm and remote shutdown are available.

This converter is convection/conduction cooled via a base plate and rated for operation over 0 to 50°C at full power without de-rating. It is housed in a low-profile, 4.43"x 2.25" x 10" chassis and full ruggedizing and conformal coating ensure immunity to shock, vibration, humidity, moisture, dust and insects.

Other converters in the BAP railway series include the 300W BAP65 and 500W BAP319.

December 2006

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