An integrated circuit includes a semiconductor die having conductive pads and an electronic component with a first terminal coupled to a third conductive pad and a second terminal coupled to a fourth conductive pad. A resistor has a first terminal coupled to the fourth conductive pad and a second terminal coupled to the fifth conductive pad, and a first transistor has a first terminal coupled to the first conductive pad, a second terminal coupled to the fifth conductive pad, and a control terminal. A second transistor has a first terminal coupled to the first transistor, a second terminal coupled to the third conductive pad, and a control terminal. A pulse generator has an input coupled to the second conductive pad and an output coupled to the control terminal of the second transistor.

An integrated circuit includes a semiconductor die having conductive pads and an electronic component with a first terminal coupled to a third conductive pad and a second terminal coupled to a fourth conductive pad. A resistor has a first terminal coupled to the fourth conductive pad and a second terminal coupled to the fifth conductive pad, and a first transistor has a first terminal coupled to the first conductive pad, a second terminal coupled to the fifth conductive pad, and a control terminal. A second transistor has a first terminal coupled to the first transistor, a second terminal coupled to the third conductive pad, and a control terminal. A pulse generator has an input coupled to the second conductive pad and an output coupled to the control terminal of the second transistor.

A packaged current sensor integrated circuit includes a primary conductor having an input portion and an output portion configured to carry a current to be measured by a magnetic sensing element supported by a semiconductor die adjacent to the primary conductor. The primary current path contains a mechanical locking feature. The thickness of the molded body of the package is reduced to improve vibration immunity.

A packaged current sensor integrated circuit includes a primary conductor having an input portion and an output portion configured to carry a current to be measured by a magnetic sensing element supported by a semiconductor die adjacent to the primary conductor. The primary current path contains a mechanical locking feature. The thickness of the molded body of the package is reduced to improve vibration immunity.

A current sensor for detecting a current based on a terminal voltage and a resistance value of a shunt resistor, includes: a resistance value correction circuit having: correction resistors; a signal application unit; a voltage detection unit that detects terminal voltages of the shunt resistor and a part of the correction resistors in a first period, and terminal voltages of all of the correction resistors in a second period; and a correction unit that corrects the resistance value for current detection based on a calculated resistance value of the shunt resistor. Resistance values and resistance accuracies of the correction resistors are higher as the plurality of correction resistors are disposed farther from the shunt resistor.

A current sensor for detecting a current based on a terminal voltage and a resistance value of a shunt resistor, includes: a resistance value correction circuit having: correction resistors; a signal application unit; a voltage detection unit that detects terminal voltages of the shunt resistor and a part of the correction resistors in a first period, and terminal voltages of all of the correction resistors in a second period; and a correction unit that corrects the resistance value for current detection based on a calculated resistance value of the shunt resistor. Resistance values and resistance accuracies of the correction resistors are higher as the plurality of correction resistors are disposed farther from the shunt resistor.

Embodiments of the invention are directed to a current sensor that includes a current controlled oscillator circuit configured to receive an input current and to provide an output signal having an output frequency which is dependent on the input current. The current sensor further includes a feedforward circuit configured to adapt a reference voltage of the current controlled oscillator in dependence on an instantaneous current value of the input current.

An oscillator-based sensor interface circuit includes first and second input nodes arranged to receive first and second electrical signals representative of an electrical quantity, respectively; an analog filter; a first oscillator arranged to receive a first oscillator input signal and a second oscillator different from the first oscillator and arranged to receive a second oscillator input signal; a comparator arranged to compare signals coming from the first and second oscillators; a first feedback element arranged to receive a representation of the digital comparator output signal and to convert the representation into a first feedback signal to be applied to the oscillation means; a digital filter arranged to yield an output signal, being an filtered version of the digital comparator output signal; a second feedback element arranged to receive the output signal and to convert the output signal into a second feedback signal.

An oscillator-based sensor interface circuit includes first and second input nodes arranged to receive first and second electrical signals representative of an electrical quantity, respectively; an analog filter; a first oscillator arranged to receive a first oscillator input signal and a second oscillator different from the first oscillator and arranged to receive a second oscillator input signal; a comparator arranged to compare signals coming from the first and second oscillators; a first feedback element arranged to receive a representation of the digital comparator output signal and to convert the representation into a first feedback signal to be applied to the oscillation means; a digital filter arranged to yield an output signal, being an filtered version of the digital comparator output signal; a second feedback element arranged to receive the output signal and to convert the output signal into a second feedback signal.

An input power monitoring circuit includes a rectifier circuit, a divided voltage generator circuit, a divided voltage comparator circuit, a switching circuit, and a computing device. The divided voltage comparator circuit is configured in such a manner that polarity of an output signal that is outputted from a first comparator upon a first rectified divided voltage exceeding a first comparison voltage is opposite to polarity of an output signal that is outputted from a second comparator upon a second rectified divided voltage exceeding a second comparison voltage. Output terminals of the first and second comparators are connected to each other. A connection point between the output terminals of the first and second comparators is connected to an input terminal of the switching circuit. The computing device measures frequency of a pulse signal outputted from the switching circuit, and determines the voltage state of input power based on the measured frequency.