Electronic temperature sensor for measuring the junction temperature of an electronic power switch during operation, and method for measuring the temperature of the junction by this electronic sensor
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United States of America Patent
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Sep 13, 2016
Grant Date -
Dec 31, 2015
app pub date -
Feb 21, 2014
filing date -
Feb 22, 2013
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Abstract
An electronic temperature sensor for measuring the junction temperature of an electronic power switch (4) of a static converter (8) includes an injection source of a calibrated measurement current (20) and a differential voltage measurement amplifier (76; 276). The electronic temperature sensor includes a first series connection (26) element and a second series connection (28) connected respectively to the inlet terminals (78, 80) of the differential voltage amplifier (76; 276). The first and second series connection elements (26, 28; 224, 226) are configured to protect the amplifier against a high voltage, have essentially identical electrical characteristics and are included in the set formed by resistances and high-voltage (HV) rapid diodes.
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