Scania Cv Ab

Jens Gustavsson

Christer Roos

Georgios Papadopoulos

Carl Tengstedt

Hans-Peter Nee

Joakim Sommansson

Oscar Hällman

An electronic circuit breaker for a vehicle, comprising: an input configured to be connected to a DC power supply; an output configured to be connected to a load; said input connected to said output via a semiconductor switch with a linear region of operation, and a saturated region of operation, said semiconductor switch comprises a switch control input; a switch driver configured to control the semiconductor switch and comprising a switch control output; wherein said switch control output is connected to the switch control input via a pre-charge circuit comprising a turn-'ON' branch which is configured to cause the semiconductor switch to operate in the linear region of operation during turn-“ON”; and a turn-“OFF” branch which is configured to cause the switch to turn-“OFF”.

Electronic circuit breaker for a vehicle, and a method therefor

A method for discharging a capacitor. An active discharge circuit is connected in parallel with the capacitor. An interface provides a signal connection between a message-based communication system and the active discharge circuit. The interface comprises at least one input for receiving messages from the message-based communication system. The interface comprises a wake-up functionality. The at least one input comprises an input for the wake-up functionality. The method comprises: receiving at the input for the wake-up functionality a disable discharge command message of said messages for the disabling of the discharge of the capacitor, wherein upon cessation of the disable discharge command message the discharge of the capacitor is enabled. An apparatus for the discharge of a capacitor, wherein the apparatus comprises the interface and the active discharge circuit connectable in parallel with the capacitor.

Apparatus and a method for discharging a capacitor

An electronic circuit breaker comprising: an input connected to an electric DC power supply; an output connected to a load; the input connected to the output via a switch, said switch is controlled via a switch control line between an 'ON'-state and an “OFF”-state; a switch driver connected to the switch control line, said switch driver configured to control the switch; and a switch protection, a voltage detection branch configured to output a first electric potential indicative of the electrical potential difference between the input and the output; a comparator circuit configured to compare the first electrical potential with a first threshold voltage, said first threshold voltage is indicative of an over-current level flowing through the switch; and a gate controller connected to the switch disable line and configured to disable the switch by connecting the switch control line to a potential which causes the switch to enter the “OFF”-state.

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Strängnäs, Sweden

Jens Gustavsson