Infineon Technologies Ag

Stmicroelectronics Application Gmbh

Stmicroelectronics R&d (shanghai) Co. Ltd.

Ansgar Pottbaecker

Jens Barrenscheen

Fabrizio Cortigiani

Detlef Ummelmann

Florin Biziitu

Panny Cai

Diana Raluca Murtaza

Paul David Patriche

Mihai-Nicolae Apostolescu

Florin Bîzîitu

A method for a slave bus and a master bus includes receiving a first frame via a first data channel, wherein the first frame includes at least first header data, first payload data and first checksum. The method further includes implementing a function depending on the header data contained in the received first frame, and generating a second frame including second header data, second payload data, which are determined by the implemented function, and a second checksum. The second checksum is ascertained at least on the basis of the second payload data and the first header data contained in the received first frame. The method also includes transmitting the second frame via a second data channel simultaneously with receiving the first frame via the first data channel.

Serial data communication with in-frame response

In one example, a master device connected in a serial-peripheral interface (SPI) daisy chain configuration with a plurality of servant devices, wherein the master device is configured to output a master data output to a first servant data input of a first servant device of a plurality of servant devices, wherein the plurality of servant devices are connected in a serial-peripheral interface (SPI) daisy chain configuration with the master device. The master device further configured to receive a master data input from a last servant device of the plurality of servant devices, wherein the master data input comprises an in-frame response of the plurality of servant devices, and wherein the in-frame response is received by the master device in a single SPI communication frame.

Serial peripheral interface daisy chain communication with an in-frame response

A buck voltage converter is provided which is configured so that a dominant pole of an open loop transfer function of the buck voltage converter is a pole introduced by a network comprising an inductor and a capacitor coupled to an output of the buck voltage converter.

Buck voltage converter

Techniques are described for providing, in a gate driver circuit, a compensation current to compensate for parasitic displacement current induced during the rising edge of an output voltage at an output gate of the gate driver circuit. In one example, the techniques of the disclosure include activating, by a bridge driver circuit for a direct-current (DC) motor, a driver of the bridge driver circuit and measuring, by the bridge driver circuit, a parasitic current of the driver during a rise time of an output gate voltage of the driver. In response to the measured parasitic current, generating, by the bridge driver circuit, a compensation current; and outputting, by the bridge driver circuit and to the output gate of the of the driver, the compensation current.

Gate-driver circuit with improved common-mode transient immunity

A system includes a bus system, such as a LIN bus system. A number of components are connected to the bus system. A first component of the components is configured to detect a direction of a current to detect a location of the first component in the bus system. Each of the components can have a unique address.

System and method to address devices connected to a bus system

A bandgap reference voltage generator includes a bipolar assembly having a first resistor, a first branch and a second branch that is in parallel with the first branch. The first branch includes a first bipolar transistor with a base coupled to a fixed voltage. The second branch includes a second bipolar transistor with a base coupled to the fixed voltage and a second resistor coupled in series with the second bipolar transistor. A differential module is coupled to the first and second bipolar transistors and configured to balance the currents in the first and the second branches. The bandgap reference voltage is output at a node to which the first resistor is connected.

Circuit and method for generating a bandgap reference voltage

In one example, a method includes operating an LDO regulator system in one of a voltage regulation mode or a power balancing mode. The method further includes comparing one or more respective reference voltages to one or more respective feedback voltages to determine a change in amount of current that needs to be delivered by the LDO regulator system, wherein a first reference voltage is across a reference resistor and a first feedback voltage is across a shunt resistor, and in response to the change in the amount of current that needs to be delivered by the LDO regulator system, adjusting an amount of current flowing through a transistor to maintain a load at a constant output voltage level. Circuits and systems that implement the method are also described.

Dual mode low-dropout linear regulator

According to an embodiment, a diagnostic circuit is configured to be coupled to an output terminal of a switching circuit and to a sense terminal of a sense circuit coupled in parallel with the switching circuit. The diagnostic circuit includes a configurable feedback circuit configured to be coupled to the output terminal and the sense terminal. The configurable feedback circuit is configured to receive a select signal, switch a configuration of the configurable feedback circuit between a first mode and a second mode based on the select signal, sink a current from the sense circuit in the first mode, source a current to the sense circuit in the second mode, and balance a voltage difference between the output terminal and the sense terminal in the first mode and in the second mode.

System and method for a diagnostic circuit

An oscillator circuit includes a Wien-bridge oscillator. A non-detuned oscillating signal and a detuned oscillating signal are tapped from the Wien-bridge oscillator. A sum of a weighted detuned signal and a weighted non-detuned signal is coupled as feedback signal to the Wien-bridge to control the oscillation amplitude.

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Grafing, Germany

Ansgar Pottbaecker