An electrical circuit and a method for regulating current and providing a circuit breaker to the electrical circuit. The circuit includes a bidirectional cell including a set of forward switches for power flow during a forward mode of operation and a set of reverse switches for providing reverse power flow during a reverse mode of operation, a control inductor for controlling current flow during the reverse mode of operation, and a voltage clamping switch configured to provide the control inductor in the circuit during the reverse mode of operation and remove the control inductor from the circuit during the forward mode of operation. The circuit is operated in at least the reverse mode of operation.

A semiconductor package includes a metallic pad and leads, a semiconductor die including a semiconductor substrate attached to the metallic pad, and a conductor including a sacrificial fuse element above the semiconductor substrate, the sacrificial fuse element being electrically coupled between one of the leads and at least one terminal of the semiconductor die, a shock-absorbing material over a profile of the sacrificial fuse element, and mold compound covering the semiconductor die, the conductor, and the shock-absorbing material, and partially covering the metallic pad and leads, with the metallic pad and the leads exposed on an outer surface of the semiconductor package. Either a glass transition temperature of the shock-absorbing material or a melting point of the shock-absorbing material is lower than a melting point of the conductor.

An electrostatic protection circuit includes a trigger circuit that is connected between a first power line and a second power line. The trigger circuit is configured to output a trigger signal in response to a voltage fluctuation between the first and second power lines. A shunt element has a main current path between the first power line and the second power line and is controllable to be on and off using the trigger signal. A control circuit is configured to supply a control signal to turn off the shunt element when a current value of the main current path of the shunt element exceeds a predetermined threshold value.

A system includes a circuit breaker and a delay circuit. The circuit breaker has a coil to enable control of a contact to selectively couple a load to a power source responsive to a coil voltage signal applied to the coil. The delay circuit has a depletion mode MOSFET and an energy storage circuit. The depletion mode MOSFET is controlled as an active current sink to provide the coil voltage signal based on a DC voltage signal. The energy storage circuit has an input coupled to a drain of the depletion mode MOSFET, a capacitor, and an output coupled to the drain of the depletion mode MOSFET, the energy storage circuit charges the capacitor from the DC voltage signal and delivers current to the depletion mode MOSFET to delay discontinuation of the coil voltage signal responsive to a drop or discontinuation of the DC voltage signal.

An electrostatic protection circuit includes a trigger circuit that is connected between a first power line and a second power line. The trigger circuit is configured to output a trigger signal in response to a voltage fluctuation between the first and second power lines. A shunt element has a main current path between the first power line and the second power line and is controllable to be on and off using the trigger signal. A control circuit is configured to supply a control signal to turn off the shunt element when a current value of the main current path of the shunt element exceeds a predetermined threshold value.

A power transistor supplying power to a load is coupled to a current limiter circuit including a differential amplifier that operates to detect a difference between a sense voltage, indicative of a load current, and a voltage reference. A control terminal of the power transistor is driven by a first output of the differential amplifier as a function of the detected difference. A voltage clamp circuit coupled to an input terminal generates a floating ground. A short-circuit protection circuit coupled to the floating ground and interposed between a second output of the differential amplifier and the control terminal of the power transistor provides a short-circuit protection for the first output of the differential amplifier. A reaction time circuit is coupled between the first and second outputs of the differential amplifier and a source terminal of the power transistor to limit a short-circuit current at the source terminal.

An over current protection circuit and an over current protection method thereof are provided. The over current protection method includes: generating a reference current curve; detecting an operation current of an electronic device; calculating a first average slope of the reference current curve and a second average slope of a variation curve of the operation current; and determining whether to activate an over current protection mechanism by comparing the first average slope and the second average slope during an over current detection mechanism.

A three-output DC voltage supply for providing a positive, an intermediate, and a negative voltage supply is provided which includes a positive DC voltage bus and a negative DC voltage bus configured to be connected to a DC power source, a first voltage divider connected between the positive DC voltage bus and the negative DC voltage bus, wherein the first voltage divider includes a voltage-setting component and a resistive component, and a short-circuit protection component including first and second transistors of opposite types connected between the voltage-setting component and the resistive component, wherein a base of the first transistor is connected to a collector of the second transistor to define a first base/collector node, a base of the second transistor is connected to a collector of the first transistor to define a second base/collector node, and the intermediate voltage supply is provided by either the first or second gate/collector nodes.

A heater electrical short protection arrangement has a heating layer that is at least partially electrically conductive. A conductive layer is initially electrically insulated from the heating layer. A circuit in electrical communication with the conductive layer is configured to halt a supply of electrical energy to the heating layer in response to current flowing into the conductive layer.

A display system and a display system detection method are provided. The display system includes: a main control unit configured to output a first detection signal to a switch unit, and calculate the connection resistance according to a connection voltage and a detection current; a switch unit configured to control the cable to generate a detection current and a detection voltage according to the first detection signal; a constant current control unit configured to stabilize the detection current and the detection voltage; and a voltage detection unit configured to generate a connection voltage according to the detection voltage, and send the connection voltage and the detection current to the main control unit.