Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

The present invention relates to a patch type thermometer containing a polymer that can be phase changed from a solid phase to a liquid phase. The patch type thermometer provided in an aspect of the present invention demonstrates high precision since it does not include conductive particles which have been a reason of disadvantage of the conventional temperature sensor, and has the effect of no temperature deviation in repeated temperature measurements because it is composed of such a single polymer material that is phase changed in a specific temperature range so that the polymer material can be reversibly changed in the volume and shape.

A method for operating a battery sensor, wherein the battery sensor has at least one measuring resistor and at least one voltage capture device for capturing a voltage drop across the measuring resistor and for outputting at least one measured value dependent on the captured voltage drop and an evaluation circuit, having the following steps of: determining, a correction value for the measured value by the evaluation circuit, and determining a first temperature value of the measuring resistor on the basis of the determined correction value by the evaluation circuit. A battery sensor which is designed to carry out such a method is also disclosed.

A method for controlling the temperature of an electric propulsion system. The electric propulsion system includes a discharge channel, an anode, a cathode, an injection system and a magnetic circuit. The injection system injects propellant gas into the discharge channel and the magnetic circuit has at least one magnetic winding to generate a magnetic field in the discharge channel. The temperature at a reference thermal point of the electric propulsion system is determined. The electric propulsion system is heated by the Joule effect by applying a current to the magnetic circuit when the determined temperature is below a minimum temperature predetermined during a stop phase of the electric propulsion system.

The present disclosure relates to an electronic circuit for detecting the current winding temperature of phase windings and/or other characteristics of an electronically commutated electric motor, which is connected, or can be connected, to a frequency converter, comprising one or more capacitive two-terminal networks with a temperature-dependent impedance, each network being arranged parallel to two winding terminals (u, v, w) of the phase windings, as well as a detector for detecting the current responses in the motor feeds on the basis of steep-flanked voltage changes at the output of the frequency converter.

A system for a power switch of a multiphase power converter coupled to an inductive load including a test controller, a voltage sampling circuit, a processing circuit, and a converter. A test pulse is applied to power switches of the converter to generate a test current through the inductive load, which forward biases a body diode of a power switch during a freewheel portion after the test pulse is completed. The voltage across the body diode is sampled during the freewheel portion, and the voltage samples are converted to a voltage value and a slope value. The voltage and slope values are converted to an estimated temperature value based on a characterization of the inductive load and the body diode. The conversion may be performed by a lookup table that stores an estimated temperature value for each unique combination of the voltage and slope values.

A system for a power switch of a multiphase power converter coupled to an inductive load including a test controller, a voltage sampling circuit, a processing circuit, and a converter. A test pulse is applied to power switches of the converter to generate a test current through the inductive load, which forward biases a body diode of a power switch during a freewheel portion after the test pulse is completed. The voltage across the body diode is sampled during the freewheel portion, and the voltage samples are converted to a voltage value and a slope value. The voltage and slope values are converted to an estimated temperature value based on a characterization of the inductive load and the body diode. The conversion may be performed by a lookup table that stores an estimated temperature value for each unique combination of the voltage and slope values.

Temperature value determination of at least one variable frequency drive component is provided. In one form, a method includes providing a variable frequency drive that includes a first component in thermal communication with a second component in thermal communication with a switching device. A temperature value of the second component is determined using a temperature value of the first component, a power loss characteristic of the drive, and a first characteristic of heat transfer between the first and second components. The method further includes sensing a temperature value of the second component and determining a temperature value for the switching device using the power loss characteristic, a second characteristic of heat transfer between the second component and the switching device, and the greater of the sensed and determined temperature values of the second component. Further embodiments, forms, features, and aspects shall become apparent from the description and drawings.

A method is provided for thermally monitoring an integrated circuit during operation of the integrated circuit. The method includes receiving a measurement of a temperature in a circuit design for the integrated circuit from a temperature sensor, and determining a hottest temperature in the circuit design based on the measurement of the temperature. A non-transitory computer readable storage medium includes computer readable instructions stored thereon for causing a computing system to receive a measurement of a first temperature in a circuit design for an integrated circuit from a temperature sensor, and determine a second temperature of a cold spot in an active region of the circuit design by adjusting the measurement of the first temperature generated by the temperature sensor by an offset.