ELECTRONIC TEMPERATURE SENSOR FOR MEASURING THE JUNCTION TEMPERATURE OF AN ELECTRONIC POWER SWITCH IN OPERATION AND METHOD OF MEASURING THE TEMPERATURE OF JUNCTION BY THE ELECTRONIC SENSOR

摘要

An electronic temperature sensor for measuring the junction temperature of an electronic power switch (4) of a static converter (8) comprises an injection source of a calibrated measurement current (20) and a measurement amplifier a differential voltage (76; 276). The electronic sensor comprises a first serial connection element (26) and a second serial connection element (28) respectively connected to the input 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 high voltage, have essentially identical electrical characteristics, and are included in the set formed by the resistors and the diodes. fast high voltage (HT).