A circuit includes electrostatic discharge (ESD) protection circuitry, triggering circuitry, transient detection circuitry, and deactivation circuitry. The ESD protection circuitry is coupled between a first rail and a second rail. The triggering circuitry is configured to generate an ESD activation signal when a voltage across the first rail and the second rail exceeds a voltage threshold. The ESD protection circuitry is configured to activate based on the ESD activation signal. The transient detection circuitry is configured to generate a deactivation signal when the voltage across the first rail and the second rail comprises a voltage change over time that is less than a transient threshold. The deactivation circuitry is configured to deactivate the triggering circuitry based on the deactivation signal.

An integrated component for protecting against temporary power surges comprises a first conductive lead and a second conductive lead, each of which mounted on an electrical circuit; a gas discharge tube; a thermally protected varistor and a thermal fuse. The thermally protected varistor comprises a varistor body, a first varistor electrode and a second varistor electrode that are positioned on either side of the varistor body. The varistor body rises in temperature when the voltage imposed between the first and the second varistor electrodes exceeds a voltage threshold. An electrical connection is made via the thermal fuse.

A power control device includes: an output voltage controller configured to control an output voltage based on a feedback voltage corresponding to the output voltage; and an overvoltage protector configured to continue or stop the operation of the output voltage controller based on a first detection result of whether the output voltage has exceeded an output voltage threshold value and a second detection result of whether the feedback voltage has fallen to or below a feedback voltage threshold value.

In an electrical circuit arrangement, which is formed by an RC-snubber element monolithically integrated into a semiconductor substrate, a first capacitor and a resistor of the RC-snubber element are vertically formed in a semiconductor region of a first type of doping of the semiconductor substrate. At least one further capacitor is connected in series with the first capacitor. The further capacitor is integrated laterally with the first capacitor in a semiconductor region of a second type of doping, which adjoins the semiconductor region of the first type of doping, and by virtue of the different type of doping electrically insulates the further capacitor from the semiconductor region of the first type of doping. This circuit arrangement forms a low inductance RC-snubber element with high dielectric strength, which has high heat dissipation and integration density.

An electrostatic-discharge (ESD) protection circuit is provided. The circuit includes an I/O terminal coupled for receiving a signal having a negative voltage relative to a voltage supply terminal. An ESD transistor is formed in an isolated well. The transistor includes a control electrode and a first current electrode coupled to the I/O terminal. The isolated well is configured as a body electrode of the transistor. An ESD diode includes an anode electrode coupled to the voltage supply terminal and a cathode electrode coupled to a second current electrode of the transistor.

A circuit is protected from sudden potential fluctuations that occur in a power ground. An in-vehicle protection apparatus includes a first Zener diode portion, a second Zener diode portion, a diode portion, and an intermediate conductive path. A voltage based on a power source is applied to the anode side of the diode portion. The intermediate conductive path is provided with a branch portion at one end, and forms a path between the cathode of the diode portion and the branch portion. The cathode of the first Zener diode portion is electrically connected to the branch portion and the anode of the first Zener diode portion is electrically connected to a power ground line. The cathode of the second Zener diode portion is electrically connected to the branch portion and the anode of the second Zener diode portion is electrically connected to a signal ground line.

The present application proposes an over-voltage protection circuit for a USB Type-C connector. The USB Type-C connector has at least one input signal pin. The over-voltage protection circuit includes a control circuit, a voltage level shift circuit, and a system clamping circuit. The control circuit generates a control signal according to a bias voltage. The voltage level shift circuit is electrically connected to the at least one input signal pin and the control circuit, and arranged to receive the control signal and at least one input signal and the control signal from the at least one input signal pin, and regulate a voltage level of the at least one input signal according to the control signal. The system clamping circuit is electrically connected to the level shift circuit, and clamps the voltage level of the regulated input signal down to below a threshold.

The present application proposes an over-voltage protection circuit for a USB Type-C connector. The USB Type-C connector has at least one input signal pin. The over-voltage protection circuit includes a control circuit, a voltage level shift circuit, and a system clamping circuit. The control circuit generates a control signal according to a bias voltage. The voltage level shift circuit is electrically connected to the at least one input signal pin and the control circuit, and arranged to receive the control signal and at least one input signal and the control signal from the at least one input signal pin, and regulate a voltage level of the at least one input signal according to the control signal. The system clamping circuit is electrically connected to the level shift circuit, and clamps the voltage level of the regulated input signal down to below a threshold.

A power control device includes: an output voltage controller configured to control an output voltage based on a feedback voltage corresponding to the output voltage; and an overvoltage protector configured to continue or stop the operation of the output voltage controller based on a first detection result of whether the output voltage has exceeded an output voltage threshold value and a second detection result of whether the feedback voltage has fallen to or below a feedback voltage threshold value.

The present disclosure provides a method and device for overvoltage protection. Specifically, the present disclosure provides an overvoltage protection device which provides a feedback loop for electronic components such as amplifiers and digital to analog converters which require feedback. The overvoltage protection device also includes overvoltage switches in both the signal and feedback channels, which may be opened by a fault detector in the event of an overvoltage. The device also includes an overvoltage feedback channel coupled between the signal and feedback channels, and which also includes a switch which may be closed in the event of an overvoltage event. As such, the overvoltage device provides a closed loop feedback channel during an overvoltage event.