Infineon Technologies Ag

Fabio Ballarin

Martin Clara

Andreas Wiesbauer

Antonio Di Giandomenico

Thomas Ferianz

David San Segundo Bello

Marco Piselli

Stefano Zampieri

Cristian Garbossa

Dario Giotta

Alfonso D'Andretta

Fabio Gini

In some examples, a device includes an amplifier circuit configured to receive a reference voltage signal at a first input, receive a feedback signal at a second input, and generate an output signal based on the reference voltage signal and the feedback signal. In some examples, the device also includes a feedback circuit including a soft-shaper circuit that is electrically connected to the second input of the amplifier circuit. In some examples, the feedback circuit is configured to sense a voltage step in the reference voltage signal, generate a voltage step across the soft-shaper circuit approximately equal to the voltage step in the reference voltage signal in response to sensing the voltage step in the reference voltage signal, and ramp a voltage level across the soft-shaper circuit to zero after generating the voltage step across the soft-shaper circuit.

Feedback circuit for regulation loops

The disclosure describes examples of integrate circuit (IC) chips. An IC chip includes a first detector configured to generate information indicative of whether an input supply voltage or power is greater than or equal to a first threshold, a second detector configured to receive a circuit voltage or current level and generate information used to indicate a status of the IC chip based on the received circuit voltage or current level, and a controller configured to cause the IC chip to enter a safe mode in response to both the first detector indicating that the input supply voltage or power is greater than the first threshold and the circuit voltage or current level being greater than a second threshold.

Determination of entering and exiting safe mode

In some examples, a voltage regulator comprises an amplifier stage and a pass element configured to receive an output of the amplifier stage and an output of a feedback circuit. The voltage regulator further comprises the feedback circuit configured to receive an output of the pass element, wherein the feedback circuit includes a differentiator stage coupled to a feedback output stage, and wherein the differentiator stage comprises a single capacitor configured to differentiate an output voltage of the pass element.

Voltage regulator with fast feedback

Example current tracking circuits and systems as well as methods for tracking current are described herein. In one example, a current tracking circuit comprises a current mirror that receives a power supply input and a control signal as inputs, wherein the current mirror has a mirror ratio. The current tracking circuit also comprises a programmability sub-circuit coupled to the current mirror that trims a value of the mirror ratio. In another example, a method comprises performing current mirroring using a current mirror comprising a sense device, wherein a mirror ratio of the current mirror is based on a programmable sub-circuit. The method further comprises maintaining, by a voltage regulation loop, a collector potential of the sense device within a threshold difference level of a collector potential of a power device coupled to the sense device, wherein the sense device mirrors a current flowing in the power device.

Precision current sensing

Methods and systems for implementing an analog switch controller to improve linearity of analog switches are described.

Analog switch controller

Systems and methods for implementing a programmable network for a multimode conditionally stable operational amplifier are disclosed.

Programmable compensation network for operational amplifiers

Modulation circuits for operating in at least a first and second mode are described herein.

Multiple mode sigma-delta modulator

Techniques for tuning filters of modulation circuits are described herein.

Growing community of inventors

Villach, Austria

Fabio Ballarin