Infineon Technologies Ag

Julia Kresse

Uwe Weder

Christoph Saas

Christoph Mayerl

Dennis Tischendorf

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.

Starter circuit, bandgap circuit and monitoring circuit

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.

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Munich, Germany

Julia Kresse