Abstract: A locking mechanism includes a drive motor; a locking member configured to perform a linear reciprocating motion along a predetermined movement path by the drive motor, and selectively locking or unlocking a predetermined object to be locked according to a position of the locking member on the movement path; a position sensor including a sensor gear rotatably driven by the drive motor and a variable resistor of which a resistance value is varied according to a rotation angle of the sensor gear; and a controller configured to determine an operating state of the locking member on the basis of a voltage value applied to the variable resistor.

Abstract: A locking mechanism includes a drive motor; a locking member configured to perform a linear reciprocating motion along a predetermined movement path by the drive motor, and selectively locking or unlocking a predetermined object to be locked according to a position of the locking member on the movement path; a position sensor including a sensor gear rotatably driven by the drive motor and a variable resistor of which a resistance value is varied according to a rotation angle of the sensor gear; and a controller configured to determine an operating state of the locking member on the basis of a voltage value applied to the variable resistor.

Abstract: A temperature sensing system for a switching device is provided The temperature sensing system includes a sensing device that is configured to sense a temperature of the switching device and a signal converter that is configured to output a digital signal having a frequency based on a voltage across the sensing device by a frequency variable method which receives the voltage across the sensing device which is a temperature sensing value when a current flows in the sensing device to convert a level of an analog signal into a frequency of the digital signal. An isolator is configured to be connected to an output terminal of the signal converter to isolate and transmit the digital signal output from the signal converter. The system also includes a controller configured to recognize the temperature from the frequency of the digital signal transmitted through the isolator.

Abstract: An apparatus for detecting a level of a control pilot signal includes: a switch controller configured to output a switch control signal using a control pilot input signal, which was outputted from an electric vehicle supply equipment; and a sample and hold logic unit configured to sample and hold the control pilot input signal, based on the outputted switch control signal, in order to output a control pilot output signal.

Abstract: An apparatus for detecting a level of a control pilot signal includes: a switch controller configured to output a switch control signal using a control pilot input signal, which was outputted from an electric vehicle supply equipment; and a sample and hold logic unit configured to sample and hold the control pilot input signal, based on the outputted switch control signal, in order to output a control pilot output signal.

Abstract: An apparatus for generating a switching signal for an analog controller includes: a voltage setting unit configured to set voltages Vref_high and Vref_low of a triangular wave; a period adjuster configured to adjust a period of the triangular wave; a triangular wave generator configured to generate the triangular wave at the period based on the voltages set by the voltage setting unit; and an AC component passing unit configured to pass an AC component of the triangular wave through a low voltage DC-DC converter (LDC) analog controller.

Abstract: A temperature sensing system for a switching device is provided The temperature sensing system includes a sensing device that is configured to sense a temperature of the switching device and a signal converter that is configured to output a digital signal having a frequency based on a voltage across the sensing device by a frequency variable method which receives the voltage across the sensing device which is a temperature sensing value when a current flows in the sensing device to convert a level of an analog signal into a frequency of the digital signal. An isolator is configured to be connected to an output terminal of the signal converter to isolate and transmit the digital signal output from the signal converter. The system also includes a controller configured to recognize the temperature from the frequency of the digital signal transmitted through the isolator.

Abstract: A circuit for conducting soft turn-off includes a semiconductor switching device, a resistor and a sink pin. The second semiconductor switching device has a current inflow terminal connected to a current control terminal of a first semiconductor switching device, and a current outflow terminal connected to a ground. The resistor has a first terminal connected to the current inflow terminal of the second semiconductor switching device, and a second terminal connected to a current control terminal of the first semiconductor switching device. The sink pin applies a value lower than a previous applied value (i.e., a low value) to the current control terminal of the second semiconductor switching device.

Abstract: A temperature sensing circuit for an insulated gate bipolar transistor (IGBT) module, which enables a temperature of the IGBT module to be sensed by a pulse width modulation (PWM) method, using a photo coupler, etc., is provided. In the temperature sensing circuit for the IGBT module, a voltage value between both terminals of a diode is measured, the measured voltage value is converted into a digital signal, using a pulse width modulation (PWM) technique, and the converted digital signal is easily transmitted to a controller such as a microcomputer (MICOM), using a photo coupler for electrical insulation, so that it is possible to analyze the duty of the digital signal, thereby sensing an accurate temperature.

Abstract: Disclosed herein is a system and method for incipient drive of a slow charger for a vehicle. Specifically, an incipient drive entry of the slow charger used when a battery is charged in an electric vehicle (EV) or a plug-in hybrid electric vehicle (PHEV) may be performed. The method includes operating, by a controller, a regulator by outputting a control pilot (CP) signal from electric vehicle supply equipment (EVSE). Additionally, the method includes operating, by the controller, a flip-flop by outputting a driving signal from the regulator and operating a switching mode power supply (SMPS) by outputting a driving signal from the flip-flop. The method further includes resetting, by the controller, the flip-flop by outputting a reset signal from a central processing unit (CPU) turned on by the SMPS.