Abstract: A power inverter includes primary switches, a transformer, a rectifier, a high voltage (HV) bus, an H-bridge, a detector, and a feedback controller. The transformer receives a switched direct current (DC) signal from a battery. The H-bridge outputs an AC signal to a stepped load. The detector detects a step-up load change by monitoring the stepped load. The feedback controller regulates a duty cycle of the AC signal, thereby reducing total harmonic distortion (THD) affecting the power inverter and the stepped load. The feedback controller further regulates the duty cycle of the AC signal by temporarily setting the primary switching duty cycle at a maximum allowable level in response to the step-up load change.

Abstract: A power inverter includes primary switches, a transformer, a rectifier, a high voltage (HV) bus, an H-bridge, a detector, and a feedback controller. The transformer receives a switched direct current (DC) signal from a battery. The H-bridge outputs an AC signal to a stepped load. The detector detects a step-up load change by monitoring the stepped load. The feedback controller regulates a duty cycle of the AC signal, thereby reducing total harmonic distortion (THD) affecting the power inverter and the stepped load. The feedback controller further regulates the duty cycle of the AC signal by temporarily setting the primary switching duty cycle at a maximum allowable level in response to the step-up load change.

Abstract: A system and method that, upon connection of a trailer to a tow vehicle, a trailer brake controller informs a tire pressure monitoring system to begin monitoring information at the TPMS and at the same time, activates the initiators, i.e., the electromagnets. Sensors respond to the electromagnetic field that is generated by electric brake magnets. As a result, the sensors transmit RF signals that are received by the tire pressure monitoring system. Transmissions from the sensors are decoded in a controller and processed as necessary for tire pressure monitoring automatically calibrated to the tire pressure monitoring system and the system can request the pressure data from the sensors by way of the low frequency field generated by the electric brakes.

Abstract: A FET monitoring and protecting system (10) that includes a FET switch device (20). The FET switch device (20) includes a FET (22), a logic device (57), and a feedback status output (26). The logic device (57) is electrically coupled to the FET (22) and generates a feedback status signal. A counter (60) is incremented in response to an actual short circuit condition of the FET switch device (20). A controller (18) is electrically coupled to the feedback status output (26). The controller (18) permits the activation of the FET (22) in response to the feedback status signal and a value of the counter (60).

Abstract: A tire pressure monitoring system (12) for a vehicle (10) has a pressure sensor circuit (16A) that includes an ECU (95), a transmitter/receiver (90), and pressure sensor (94). A method of operating a tire pressure monitoring system includes calibrating a tire pressure sensor circuit in a first range and a second range and generating a first calibration data for the first range and second calibration data for the second range. The first calibration data and the second calibration data are stored in a memory of the tire pressure sensing circuit (16A). A data signal corresponding to the pressure is generated. The first or second calibration data is generated in response to the range of the data signal to form a selected calibration. The data signal is calibrated with the selected calibration to form a pressure indicative signal. The pressure indicative signal is transmitted to a receiver (28) within the vehicle (10) with a range status corresponding to the selected calibration.

Abstract: The embodiments described herein include a tire pressure monitoring (TPM)/remote keyless entry (RKE) device and method. The device includes a first antenna and a second antenna. An antenna switch is also included for selecting the first antenna and the second antenna. The controller generates signals for the antenna switch to cause selection of the first antenna and the second antenna for the reception of radio-frequency (RF) signals. Additionally, housing encloses the second antenna, the antenna switch and the controller. Also, at least a portion of the first antenna extends external to the housing.

Abstract: A FET monitoring and protecting system (10) that includes a FET switch device (20). The FET switch device (20) includes a FET (22), a logic device (57), and a feedback status output (26). The logic device (57) is electrically coupled to the FET (22) and generates a feedback status signal. A counter (60) is incremented in response to an actual short circuit condition of the FET switch device (20). A controller (18) is electrically coupled to the feedback status output (26). The controller (18) permits the activation of the FET (22) in response to the feedback status signal and a value of the counter (60).

Abstract: A tire pressure monitoring system for detachment detection of a tire pressure sensor is provided. The system includes a tire pressure sensor, a receiver and a controller. The tire pressure sensor includes a transmitter for transmitting a word having a detachment state. The receiver is for receiving the word and is coupled to the controller. The controller decodes the word and determines the detachment state of the tire pressure sensor. A robust method for the automatic detection of a detached tire pressure sensor of a tire pressure monitoring system is also provided.

Abstract: A tire pressure monitoring system (12) for a vehicle (10) has a pressure sensor circuit (16A) that includes an ECU (95), a transmitter/receiver (90), and pressure sensor (94). A method of operating a tire pressure monitoring system includes calibrating a tire pressure sensor circuit in a first range and a second range and generating a first calibration data for the first range and second calibration data for the second range. The first calibration data and the second calibration data are stored in a memory of the tire pressure sensing circuit (16A). A data signal corresponding to the pressure is generated. The first or second calibration data is generated in response to the range of the data signal to form a selected calibration. The data signal is calibrated with the selected calibration to form a pressure indicative signal. The pressure indicative signal is transmitted to a receiver (28) within the vehicle (10) with a range status corresponding to the selected calibration.

Abstract: A tire pressure monitoring system for detachment detection of a tire pressure sensor is provided. The system includes a tire pressure sensor, a receiver and a controller. The tire pressure sensor includes a transmitter for transmitting a word having a detachment state. The receiver is for receiving the word and is coupled to the controller. The controller decodes the word and determines the detachment state of the tire pressure sensor. A robust method for the automatic detection of a detached tire pressure sensor of a tire pressure monitoring system is also provided.