Switching device e.g. for motor in motor vehicle, comprises diode for reverse polarity protection integrated as additional pn-junction or Schottky contact in semiconductor switch

摘要

A semiconductor switch is provided for opening/closing a current comprising a current/voltage source (4) supplying a load (3) to which a free-wheeling diode is connected in antiparallel for converting the energy supplied into heat. A reverse-polarity protection diode (7) is connected to protect the semiconductor switch, and is integrated into the semiconductor switch in the form of an additional pn-junction (14,15) or in the form of an additional Schottky contact. An independent claim is included for a semiconductor switch.