System and method for temperature sensing

According to an embodiment, a method of operating a measurement circuit includes biasing a sense transistor to conduct current through a first conduction channel in a first direction during a first mode, injecting a measurement current into a body diode of the sense transistor during a second mode,...

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Bibliographic Details
Main Author Furtner Wolfgang
Format Patent
LanguageEnglish
Published 28.11.2017
Subjects
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
PHYSICS
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Summary:According to an embodiment, a method of operating a measurement circuit includes biasing a sense transistor to conduct current through a first conduction channel in a first direction during a first mode, injecting a measurement current into a body diode of the sense transistor during a second mode, measuring a first voltage across the sense transistor when the measurement current is injected, and determining a temperature of the sense transistor based on the first voltage. When the measurement current is injected, it is injected in a second direction opposite the first direction. The sense transistor is integrated in a semiconductor body with a load transistor having a second conduction channel, and the first conduction channel and the second conduction channel are coupled to an input node.
Bibliography:Application Number: US201414526158