Apparatus and method for power switch status check

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11211928
SERIAL NO

17164503

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Abstract

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A power switch fault detector detects faults in the current paths of power switches. A first operational amplifier detects a drain-source voltage of a first set of parallel connected field-effect transistors in a current path. A second operational amplifier detects a drain-source voltage of a second set of parallel connected field-effect transistors in the current path. A hardware or software processor is configured to compare a difference in magnitude of the drain-source voltages to a threshold voltage to determine whether a field-effect transistor of one of the first set or second set is compromised. The current path is isolated and one of the first set or second set of field-effect transistors is deactivated to determine whether a field-effect transistor of the first set or second set is stuck-open or shorted.

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Patent Owner(s)

  • INFINEON TECHNOLOGIES AG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Valero, Alexandre Aix-en-Provence, FR 1 0

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