公开(公告)号：US20240402107A1

公开(公告)日：2024-12-05

申请号：US18674115

申请日：2024-05-24

Applicant: Infineon Technologies AG

Inventor： Ilie-Ionut CRISTEA

IPC: G01N25/18 ,  G01N33/00 ,  G01R19/10

Abstract: A thermal conductivity sensor includes a measurement circuit configured to operate in a first circuit configuration during a heating phase of the measurement circuit and in a second circuit configuration during a measurement phase of the measurement circuit. The first circuit configuration is associated with a first power dissipation of the measurement circuit at a supply voltage. The second circuit configuration is associated with a second power dissipation of the measurement circuit at the supply voltage. The first power dissipation is greater than the second power dissipation.

公开(公告)号：US20230299438A1

公开(公告)日：2023-09-21

申请号：US17697143

申请日：2022-03-17

Applicant: Infineon Technologies AG

Inventor： Dan-Alexandru MOCANU ,  Bogdan BUMBACEA ,  Ilie-Ionut CRISTEA ,  Radu MIHAESCU

IPC: H01M50/578 ,  G01R31/396

CPC classification number: H01M50/578 ,  G01R31/396 ,  G06F13/4282

Abstract: A sensor device includes a pressure sensor configured to measure an internal air pressure and generate a sensor signal representative of the measured internal air pressure; a serial peripheral interface (SPI) configured to receive SPI commands; a wake-up terminal configured to output fault signals; and a processing circuit. The processing circuit is configurable between a normal running mode and a low power monitoring (LPM) mode. In LPM mode, the processing circuit is configured to alternate between a sampling phase during which the processing circuit evaluates the sensor signal and a powered-down phase during which the processing circuit is in a low power state. The processing circuit is configured to monitor for at least one SPI communication fault corresponding to information received on the SPI, generate a communication fault signal in response to detecting the at least one SPI communication fault, and output the communication fault signal from the wake-up terminal.

公开(公告)号：US20240250693A1

公开(公告)日：2024-07-25

申请号：US18402964

申请日：2024-01-03

Applicant: Infineon Technologies AG

Inventor： Andrei-Sorin GHEORGHE ,  Dan Ioan Dumitru STOICA ,  Ilie-Ionut CRISTEA

IPC: H03M3/00 ,  G01R33/07

CPC classification number: H03M3/464 ,  H03M3/496 ,  G01R33/075

Abstract: The present disclosure proposes a sigma-delta analog-to-digital converter for converting an analog input signal to a digital output signal at a sampling frequency (fs). The sigma-delta analog-to-digital converter includes a chopper circuit configured to shift the analog input signal from an original frequency to a chopper frequency (fchop=fs/N) to generate a chopped analog signal, where N is a positive integer with N≥1. A chopper period includes a first chopper phase and a second chopper phase. The sigma-delta analog-to-digital converter also includes a timing circuit configured to adjust at least one of a duration of the first chopper phase or a duration of the second chopper phases according to (N/2−k)·Ts, with k being an odd integer equal to or larger than 1, and Ts being a sampling period 1/fs of the sigma-delta analog-to-digital converter.

公开(公告)号：US20240198847A1

公开(公告)日：2024-06-20

申请号：US18067258

申请日：2022-12-16

Applicant: Infineon Technologies AG

Inventor： Dan-Alexandru MOCANU ,  Ilie-Ionut CRISTEA

IPC: B60L58/10 ,  B60L3/04 ,  B60R21/013

CPC classification number: B60L58/10 ,  B60L3/04 ,  B60R21/013

Abstract: A vehicle system includes a vehicle controller configured to detect a parking mode of a vehicle and generate a low-power command based on detecting the parking mode; a collision monitoring system; and a communication interface. The collision monitoring system includes a sensor controller configured to receive the low-power command via the communication interface, enter into a low-power mode, and set the communication interface into an idle communication mode during the low-power mode; a sensor configured to generate a sensor signal based on a measured property; and a processing circuit configured to compute, during the low-power mode, a derivative measurement at a plurality of sampling times based on the sensor signal, and compare each instance of the derivative measurement to a threshold. The sensor controller is configured to transmit a wake-up command to the vehicle controller via the communication interface based on the derivative measurement satisfying the threshold.

公开(公告)号：US20250155528A1

公开(公告)日：2025-05-15

申请号：US18510084

申请日：2023-11-15

Applicant: Infineon Technologies AG

Inventor： Dan Ioan Dumitru STOICA ,  Ilie-Ionut CRISTEA ,  Armin SATZ ,  Georg KAFFL

IPC: G01R33/07 ,  G01R15/20

Abstract: A magnetic field sensor chip includes an input terminal configured to receive an external bias current from an external current source; an internal current generator configured to split the external bias current into a plurality of internal bias currents, including a first internal bias current and a second internal bias current; a Hall sensor configured to be biased by the first internal bias current and set at a first operating point based on the first internal bias current, wherein the Hall sensor is further configured to generate a sensor signal based on a magnetic field and the first operating point; and an amplifier configured to be biased by the second internal bias current and set at a second operating point based on the second internal bias current. The amplifier is configured to amplify the sensor signal into an amplified sensor signal based on the second operating point.

公开(公告)号：US20230314258A1

公开(公告)日：2023-10-05

申请号：US17709934

申请日：2022-03-31

Applicant: Infineon Technologies AG

Inventor： Radu MIHAESCU ,  Dan-Alexandru MOCANU ,  Ilie-Ionut CRISTEA

IPC: G01L27/00 ,  B60C23/04

CPC classification number: G01L27/007 ,  B60C23/04

Abstract: A pressure sensor module includes a pressure sensor configured to periodically measure an internal air pressure within an enclosure and generate a sensor signal having plurality of sensor values; a signal processing chain for conditioning the sensor signal to generate a plurality of conditioned sensor values; a memory configured to store each of the plurality of conditioned sensor values; and a processing circuit coupled to the pressure sensor via the signal processing chain for receiving a current conditioned sensor value and coupled to the memory for receiving a previous conditioned sensor value. The processing circuit is configured monitor for a fault, including calculating a delta pressure value between the current and previous conditioned sensor values, comparing the delta pressure value to a pressure threshold value, and triggering a diagnostic of the signal processing chain if the delta pressure value is greater than the pressure threshold value.