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AssigneeMahle International GmbH
InventorsThorsten Grelle, Peter Kozlowski, Penyo Topalov, Philipp Zimmerschied
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A method for protecting an external circuit from a surge voltage with a protective circuit, which may include a protective unit with a semiconductor switch switchable parallel to the external circuit and a voltage regulator, may include specifying to the voltage regulator a setpoint voltage correlating with a rated voltage of the external circuit. The method may also include tapping off, via the voltage regulator, an actual voltage correlating with a current voltage of the external circuit on the external circuit. The method may further include providing via the voltage regulator, dependent on a difference between the specified setpoint voltage and the tapped-off actual voltage, a GATE voltage on the semiconductor switch of the protective unit. Additionally, the method may include changing the current voltage in the external circuit via the semiconductor switch at the provided GATE voltage consuming a current flowing in the external circuit.
A method for protecting an external circuit from a surge voltage with a protective circuit, the protective circuit including a protective unit with a semiconductor switch switchable parallel to the external circuit and a voltage regulator, the method comprising:
Dependencies are inferred from the claim text.