A circuit and method for protecting circuit elements, vehicle having the circuit, and method for controlling the vehicle are provided. The circuit for protecting circuit elements includes a circuit element, a driving signal generator that applies a driving voltage to the circuit element and an inductor with a first terminal electrically connected to the circuit element. A circuit protector obtains information regarding the driving voltage applied to the circuit element and a differential voltage across the first terminal and a second terminal of the inductor, compares the driving voltage applied to the circuit element with a first reference voltage, compares the differential voltage with a second reference voltage, and then transmits a control signal to the driving signal generator according to the comparison results.

To realize a reduction in the number of parts in a system including a driver IC (semiconductor device). A high potential side power supply voltage is applied to a power supply application area. A high side area is formed with a circuit which includes a driver driving a high side transistor and is operated at a boot power supply voltage with a floating voltage as a reference. A low side area is formed with a circuit operated at a power supply voltage with a low potential side power supply voltage as a reference. A first termination area is disposed in a ring form so as to surround the power supply application area. A second termination area is disposed in a ring form so as to surround the high side area.

A power supply device, including: a switching structure for controlling a continuous current in an inductive load on the basis of at least one control signal of a power switch; and anomaly detection elements, generating at least one item of information about the detection of an anomaly of the open circuit type in the wiring from the load to the switching structure. The anomaly detection elements include: elements for measuring the current flowing in the inductive load; elements for comparing the measured current continuously with a threshold value; and elements for counting a time interval during which the measured current remains continuously below the threshold value, delivering the anomaly detection information if the counted time interval>a reference time interval, which is k times greater than a period of the control signal, where k>1, and if the duty cycle of the control signal>a threshold value.

An inductive rotating power transfer circuit, preferably for transferring electrical power from the stationary part to the rotating part of a CT scanner comprises an inductive power transformer having a stationary primary side and a rotating secondary side. The secondary side is connected via a rectifier to a filtering capacitor, delivering electrical power to a load. One of the output pins of the filtering capacitor is connected to a secondary ground at the rotating part which is further connected to a stationary protective ground via a galvanic slip ring. In the case of a short circuit between a secondary transformer winding and the secondary ground, the secondary winding is partially short-circuited by one of the rectifier diodes. This causes an asymmetric current load at the primary side and a current flowing through the slip ring. Both currents may be used to detect a failure of the secondary winding.

An actuator in a HVAC system includes a motor and a drive device driven by the motor. The drive device is coupled to a movable HVAC component for driving the movable HVAC component between multiple positions. The actuator further includes a main actuator controller. The main actuator controller includes end stop location memory that stores one or more end stop locations indicating expected locations of the one or more end stops. The main actuator controller further includes an end stop location recalibrator that runs an automatic recalibration process to determine and set recalibrated end stop locations. The end stop location recalibrator runs the automatic calibration process in response to detecting that the drive device has unexpectedly stalled at a location other than a stored end stop location.

A solid state relay for controlling a three-phase AC motor running direction is provided, a driver module, power components module, phase sequence detection module, phase lack detection module, and automatic phase correction and phase lack protection logic module. The input of the phase sequence detection module is connected to the three-phase power supply, and the output is connected to the automatic phase correction and phase lack protection logic module, to provide phase sequence detection and a phase sequence signal to the automatic phase correction and phase lack protection logic module. The input of the phase lack detection module is connected to the three-phase power supply, and the output is connected to the automatic phase correction and phase lack protection logic module, to detect a lack of phase and provide the lacking phase signal to the automatic phase correction and phase lack protection logic module.

A power supply device, including: a switching structure for controlling a continuous current in an inductive load on the basis of at least one control signal of a power switch; and anomaly detection elements, generating at least one item of information about the detection of an anomaly of the open circuit type in the wiring from the load to the switching structure. The anomaly detection elements include: elements for measuring the current flowing in the inductive load; elements for comparing the measured current continuously with a threshold value; and elements for counting a time interval during which the measured current remains continuously below the threshold value, delivering the anomaly detection information if the counted time interval>a reference time interval, which is k times greater than a period of the control signal, where k>1, and if the duty cycle of the control signal>a threshold value.

The present invention relates to a power-off brake circuit for a DC fan, which comprises a control unit, a motor driver unit, a switch unit, a power-off protection unit, and a brake unit and a brake unit. The control unit is coupled to the motor driver unit, the switch unit, the power-off protection unit. The brake unit is coupled to the motor driver unit and the power-off protection unit. By means of the circuit design of the present invention, the independent brake loop is used to achieve the effects of power-off brake and of the accurate control of rotating speed is improved.

A control device for fail-safe control of an electric actuator, having: an electrical power source; a power path from the source to an output connection for an actuator, in which a power part is arranged. The power part switches the polarity of the output voltage and/or changes the amount of electrical power that is output. A power switching element in the path switches the electrical power at the output on and off. A sensor downstream of the power part determines the electrical power at the output. An enable signal actuates the power switching element, and a switching signal provides the electrical power at the output based on a switching state. A combinational circuit logic assembly carries out logic operations between the switching state of the switching signal and the electrical power determined by the sensor and generates a further enable signal used to act on the power switching element.

A semiconductor package for a multi-phase motor driving circuit comprises a driving unit, a switching unit, a first bonding wire, and a second bonding wire. The driving unit comprises a first driving IC, a second driving IC and a third driving IC, configured to couple with a controller. The switching unit comprises a first pair of power switches, a second pair of power switches and a third pair of power switches, configured to couple with the first driving IC, the second driving IC and the third driving IC, respectively. The first bonding wire is coupled between a sensing pin of the first driving circuit and a connection between the driving unit and a motor driven by the driving. The second bonding wire is coupled between a fault out pin of the first driving IC, the second driving IC and the third driving IC.