Ams Ag

Austriamicrosystems Ag

Thomas Jessenig

Manfred Lueger

Peter Kammerlander

Christian Halper

Peter Trattler

Holger Haiplik

Peter Bliem

Stefan Wiegele

Tobias Bühler

Radek Gancarz

Martin Mayer

Tobias Buehler

An LDO circuit comprises a pass element, and input stage, a current sink, a comparator and a control circuit. The pass element is configured to generate an output voltage depending on a gate signal and on an input voltage. The input stage is configured to generate a steering signal based on a deviation between a first reference signal and a feedback signal, the feedback signal being based on the output voltage. The current sink is controlled by a steering signal and connected between the gate control terminal and a reference terminal. The comparator is configured to compare the steering signal to a second reference signal and to generate a switch signal based on the comparison. The control circuit comprises a first current path and is configured to suspend, in particular temporarily suspend, the first current path depending on the switch signal.

Low dropout regulator circuit and method for controlling a voltage of a low dropout regulator circuit

A converter arrangement, in particular a switched DC/DC converter arrangement, comprises a control die and a converter die. The control die comprises a control logic for generating a control signal and a control output for controlling the converter die by means of the control signal. The converter die comprises at least one converter that is designed for converting an input signal into an output signal in dependence on the control signal, wherein the control signal can be received at a control input. A single-line interface connects the control output to the control input.

Converter arrangement having a control die with control logic for generating a control signal and a control output for controlling a converter die

A circuit for DC-DC conversion with current limitation comprises a DC-DC converter () with a coil () and a controllable switch () that can be switched into a low-impedance and a high-impedance state, and a current limiter () for generating a control signal (I) for controlling the state of the controllable switch in the DC-DC converter (). The current limiter () is constructed such that the current (I) through the coil at which the current limitation takes place is nearly independent of the ratio of the on-times and off-times of the controllable switch in the DC-DC converter ().

Circuit for DC-DC conversion with current limitation

Bidirectional temperature communication between controller and converter for multiple phase buck converters

The invention relates to a circuit and to a method for generating a start sequence. The circuit comprises at least one partially programmable memory (nonvol) for storing an encoded start sequence (Ni) and a control unit (CTRL), which is equipped to read the encoded start sequence (Ni) and decode it into a decoded start sequence (dNi) and to generate a target register address (n) depending on the decoded start sequence (dNi). An addressable memory (vol) is provided, to which the decoded start sequence (dNi) can be written by means of the control unit (CTRL) at the target register address (n).

Circuit for generating a start sequence and method for generating a start sequence

A DC/DC converter includes an input to which an input current is supplied, an output at which an output current is provided, and a current control circuit coupled to the input and the output includes a unit that provides an instantaneous value signal proportional to the output current of the DC/DC converter with the aid of the input current, an internal input that supplies a reference signal, and a comparison device coupled to the unit that provides the instantaneous value signal and the internal input and comprises an internal output that provides a control signal dependent on a comparison of the instantaneous value signal with the reference signal, wherein the control signal adjusts the output current of the DC/DC converter.

DC/DC converter and method for the current control of a DC/DC converter

In one embodiment, a DC converter has a frequency adjusting device with a frequency selection circuit, a frequency change-over switch (), a frequency generator (), a threshold signal generator (), a state machine () and a unit () for providing a ready signal (S). The frequency selection circuit has an output (), at which a control signal (S) is provided, which is set up to select a frequency of the switching frequency signal (DCLK) of the DC converter. The invention further relates to a method for selecting a frequency of the DC converter.

DC converter and method for selecting a frequency of same

A circuit arrangement for temperature measurement comprises an input for connecting a temperature-sensitive element, a that is connected to a first input of a comparator. A reference voltage is connected to a second input of the comparator. Furthermore, the arrangement comprises a sequential logic, that is coupled to the output of the comparator that comprises a first output and a second output. A digitally controllable switch element for providing a superposition signal is connected to the output of the sequential logic and the first input of the comparator.

Circuit arrangement and method for temperature measurement

A circuit arrangement () for voltage conversion comprises a forward branch () with a first load terminal () to which an electrical load () can be coupled and a feedback branch () with a sampling device (). The electrical load () can be operated with pulse width modulation. A method for voltage conversion comprises the following steps: an electrical load () is supplied with energy using pulse width modulation. A feedback voltage (Vfb) that can be tapped at a terminal of the electrical load () is sampled in a first clock phase during which the electrical load () is supplied with energy. The voltage conversion is controlled as a function of the feedback voltage (Vfb).

Circuit arrangement and method for voltage conversion

A method includes a voltage converter outputting an output voltage that is based on an input voltage and on a first multiplication factor, determining a predicted current sink voltage based on a new multiplication factor obtained from a set of selectable values, based on a signal derived from the input voltage, based on a load voltage across an electrical load, and based on a correction voltage. The method also includes comparing a predicted current sink voltage with a predetermined threshold value and outputting the new multiplication factor to a control input of the voltage converter if the predicted current sink voltage exceeds the predetermined threshold value.

Arrangement provided with a voltage converter for supplying voltage to an electrical charge and associated method

An integrated circuit includes a comparator having a first input, a second input, and an output for providing a comparison result. The first input is connected to a readable component having a predefined value, and the second input is connected to a reference component. A control unit is at the output of the comparator. The control unit controls at least one function block based on the comparison result.

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Graz, Austria

Thomas Jessenig