Short circuit detection apparatus

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12255202
APP PUB NO 20230126872A1
SERIAL NO

17872356

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A short circuit detection apparatus includes a capacitor connected to a high potential side of a semiconductor switching device via a diode and a resistor connected in series, a short circuit determination circuit that detects a terminal voltage of one terminal of the capacitor, and determines that the semiconductor switching device has short-circuited when the terminal voltage is equal to or greater than a threshold voltage, and a voltage control circuit that is provided between another terminal of the capacitor and a low potential side of the semiconductor switching device, switches between a conduction and an interruption of the capacitor and the semiconductor switching device, and applies an offset voltage between the capacitor and the semiconductor switching device when conducting.

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Patent Owner(s)

  • MITSUBISHI ELECTRIC CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Morisaki, Chiharu Tokyo, JP 7 3

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