Abstract: A voltage regulating circuit including a conversion circuit configured to convert a voltage pulse sequence into a filtered analog voltage, wherein the voltage pulse sequence represents a predefined operating limiting voltage, and a regulator configured to receive the filtered analog voltage as regulation variable and to regulate an output voltage of the voltage regulating circuit to a predefined desired voltage.

Abstract: Various embodiments provide a voltage regulator. The voltage regulator includes a supply voltage input to apply an input supply voltage, a supply voltage output to output an output supply voltage, and a first field effect transistor and a second field effect transistor, which are connected in series between the voltage supply input and the voltage supply output. The first field effect transistor has a higher operating voltage than the second field effect transistor. The voltage regulator further includes a regulator designed to set the gate voltage of the first field effect transistor and the gate voltage of the second field effect transistor to regulate the output supply voltage on the basis of a reference voltage.

Abstract: Various embodiments provide a voltage regulator. The voltage regulator includes a supply voltage input to apply an input supply voltage, a supply voltage output to output an output supply voltage, and a first field effect transistor and a second field effect transistor, which are connected in series between the voltage supply input and the voltage supply output. The first field effect transistor has a higher operating voltage than the second field effect transistor. The voltage regulator further includes a regulator designed to set the gate voltage of the first field effect transistor and the gate voltage of the second field effect transistor to regulate the output supply voltage on the basis of a reference voltage.

Abstract: Various embodiments provide a voltage regulator. The voltage regulator includes a supply voltage input to apply an input supply voltage, a supply voltage output to output an output supply voltage, and a first field effect transistor and a second field effect transistor, which are connected in series between the voltage supply input and the voltage supply output. The first field effect transistor has a higher operating voltage than the second field effect transistor. The voltage regulator further includes a regulator designed to set the gate voltage of the first field effect transistor and the gate voltage of the second field effect transistor to regulate the output supply voltage on the basis of a reference voltage.

Abstract: A bandgap circuit, a starter circuit, and a monitoring circuit for a bandgap circuit including a bandgap reference circuit having a first branch and a second branch, the first branch having a first node, the second branch having a second node, such that a potential at the first node is equal to a potential at the second node in an equilibrium of the bandgap reference circuit. The bandgap reference circuit further having a feedback node for a feedback signal and a feedback circuit coupled to the first and second nodes and adapted to provide a feedback signal to the feedback node based upon a comparison of the potentials at the first and second nodes.

Abstract: A device for determining an interference with a regulated voltage provided by a control loop with a unit for monitoring a control variable of the control loop and a unit for generating a notification signal if the control variable or a change in the time of the control variable is beyond a tolerance range around a normal value.

Abstract: A circuit for detecting, whether a voltage difference is below a desired voltage difference comprises a voltage shift resistor, a current provider and a detection circuit. The current provider provides a current flowing through the voltage shift resistor such that the desired voltage difference across the voltage shift resistor is determined by a reference signal. The detection circuit is configured to compare a first voltage at a first input with a voltage at a second input to obtain a signal. The voltage shift resistor is coupled between a conductor for a second voltage and the second input, such that the voltage at the second input differs from the second voltage by the desired voltage difference, and wherein the detection circuit is configured to provide the signal, such that the signal indicates, whether the voltage difference between the first and the second voltage is below the desired voltage difference.

Abstract: Embodiments according to the present invention relate to a bandgap circuit, a starter circuit and a monitoring circuit for a bandgap circuit comprising a bandgap reference circuit comprising a first branch and a second branch, the first branch comprising a first node, the second branch comprising a second node, such that a potential at the first node is equal to a potential at the second node in an equilibrium of the bandgap reference circuit. The bandgap reference circuit further comprises a feedback node for a feedback signal and a feedback circuit coupled to the first and second nodes and adapted to provide a feedback signal to the feedback node based upon a comparison of the potentials at the first and second nodes.

Abstract: A circuit arrangement having a changeover apparatus which provides a first voltage in a first state and a second voltage in a second state in order to operate a circuit, where the changeover apparatus is designed such that when changing over from the first state to the second state the voltage provided for operating the circuit changes from the first voltage to the second voltage linearly with time.

Abstract: A circuit for providing a desired voltage difference in dependence on a reference signal, the circuit including a first resistor; a second resistor; a regulation circuit configured to regulate a current flowing through the first resistor, such that a voltage difference across the first resistor is determined by the reference signal; and a current mirror, wherein the current mirror is configured to mirror the current flowing through the first resistor to obtain a mirrored current flowing through the second resistor, such that the desired voltage difference is obtained across the second resistor.

Abstract: A device for determining an interference with a regulated voltage provided by a control loop with a unit for monitoring a control variable of the control loop and a unit for generating a notification signal if the control variable or a change in the time of the control variable is beyond a tolerance range around a normal value.

Abstract: A circuit arrangement having a changeover apparatus which provides a first voltage in a first state and a second voltage in a second state in order to operate a circuit, where the changeover apparatus is designed such that when changing over from the first state to the second state the voltage provided for operating the circuit changes from the first voltage to the second voltage linearly with time.

Abstract: A circuit arrangement for voltage regulation having a series regulator with a regulating amplifier and a charge pump that is connected downstream of the regulating amplifier, a reference voltage unit that generates a reference voltage for the regulating amplifier, and a starter unit that generates a starter voltage in order to supply the regulating amplifier, the charge pump, and the reference voltage unit with voltage while the series regulator is being started.

Abstract: A circuit arrangement for voltage regulation having a series regulator with a regulating amplifier and a charge pump that is connected downstream of the regulating amplifier, a reference voltage unit that generates a reference voltage for the regulating amplifier, and a starter unit that generates a starter voltage in order to supply the regulating amplifier, the charge pump, and the reference voltage unit with voltage while the series regulator is being started.