公开(公告)号：US11536810B2

公开(公告)日：2022-12-27

申请号：US16855196

申请日：2020-04-22

Applicant: Infineon Technologies AG

Inventor： Norbert Druml ,  Philipp Greiner ,  Hermann Hofer ,  Ievgeniia Maksymova

IPC: G01S7/481 ,  G02B26/08 ,  G01S7/484 ,  G01S17/10 ,  G01S7/497 ,  G02B26/10

Abstract: An oscillator control system that includes an oscillator structure; a phase error detector configured to generate a phase error signal based on a delayed event time signal and delayed reference signal; an analog signal path coupled between the oscillator structure and the phase error detector, the analog signal path configured to receive an event time signal and produce the delayed event time signal; a control circuit configured to generate a reference signal; a programmable delay circuit configured to receive the reference signal and induce a programmable delay on the reference signal thereby generating the delayed reference signal; and an analog delay measurement circuit configured to inject a test signal into the analog signal path, receive a delayed test signal from the analog signal path, measure an analog delay of the delayed test signal, and generate a configuration signal configured to adjust the programmable delay according to the measured analog delay.

公开(公告)号：US11573274B2

公开(公告)日：2023-02-07

申请号：US17344091

申请日：2021-06-10

Applicant: Infineon Technologies AG

Inventor： Bernd Zimek ,  Hermann Hofer ,  Andreas Jaeger

IPC: G01R31/40 ,  G01S7/497 ,  G01S7/40 ,  G05F1/56

Abstract: The present disclosure relates to a detection circuit for detecting oscillations of a regulated supply signal. The detection circuit includes a filter circuit to filter the regulated supply signal in order to obtain a filtered supply signal. A peak value detector circuit is designed to detect an extremum of the filtered supply signal. A comparator circuit is designed to compare the detected extreme value with a threshold value and to indicate an understepping or exceedance of the threshold value.