公开(公告)号：US20230291538A1

公开(公告)日：2023-09-14

申请号：US18174183

申请日：2023-02-24

Applicant: STMicroelectronics S.r.I.

Inventor： Riccardo Condorelli ,  Antonino Mondello ,  Michele Alessandro Carrano

IPC: H04L7/033 ,  H03K5/26

CPC classification number: H04L7/033 ,  H03K5/26

Abstract: A method includes providing a reference clock signal having a reference period, providing a sampling clock signal having a sampling clock period shorter than the reference period of the reference clock signal, measuring the first subperiod as a first ratio of the first subperiod to the period of the sampling clock signal, measuring the second subperiod as a second ratio of the second subperiod to the period of the sampling clock signal, detecting a starting edge of a clock signal having a clock period greater than the reference period, producing a reconstructed reference signal based on the first ratio, the second ratio, and the detected starting edge, comparing the clock period of the clock signal with a period of the reconstructed reference signal to obtain a differential signal indicating a difference therebetween, and providing the differential signal to user circuitry for calibrating the clock signal.

公开(公告)号：US20220271663A1

公开(公告)日：2022-08-25

申请号：US17650463

申请日：2022-02-09

Applicant: STMicroelectronics S.r.I. ,  STMicroelectronics (Alps) SAS

Inventor： Francois Druilhe ,  Patrik Arno ,  Alessandro Inglese ,  Michele Alessandro Carrano

IPC: H02M3/158 ,  H02M1/36

Abstract: A power supply system includes a voltage application source, and a switched mode power supply having an output coupled to the voltage application source through a first path and through a second path different from the first path. A first node is coupled to the output of the switched mode power supply, the switched mode power supply being configured to couple the first node to the voltage application source through the first path in a first operating mode and through the second path in a different second operating mode. A digital regulator is coupled to the first node. A digital circuit is coupled to an output of the digital regulator. An analog regulator is coupled to the first node and an analog circuit coupled to an output of the analog regulator.