公开(公告)号：US10992228B2

公开(公告)日：2021-04-27

申请号：US16819721

申请日：2020-03-16

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： David Chesneau ,  Francois Amiard

IPC: H02M3/158 ,  H02M3/155 ,  H02M3/156 ,  H02M1/08

Abstract: A method includes switching a switching circuit of the switched-mode power supply in a synchronous mode by turning on and off switches of the switching circuit in synchrony with a clock signal, wherein the switching circuit is coupled to an inductive element, and wherein the synchronous mode comprises a charging phase and a discharging phase; switching the switching circuit in an asynchronous mode by turning on and off switches of the switching circuit without being synchronized with the clock signal, wherein the asynchronous mode comprises a charging phase and a discharging phase; charging the inductive element during the charging phase of the synchronous mode; discharging the inductive element during the discharging phase of the synchronous mode; charging the inductive element during the charging phase of the asynchronous mode; and discharging the inductive element during the discharging phase of the asynchronous mode.

公开(公告)号：US10944324B2

公开(公告)日：2021-03-09

申请号：US16600079

申请日：2019-10-11

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： David Chesneau

IPC: H02M3/158

Abstract: In an embodiment, a method for operating a voltage step-down switched mode power supply includes delivering an output voltage with an output stage having a power transistor that is cyclically made conducting by a first control signal. In PWM mode, the method includes generating an error voltage based on the output voltage and a reference voltage, and applying a first delay on a first control signal. The first delay is determined so as to reduce a difference between the error voltage and the reference voltage.

公开(公告)号：US20200099296A1

公开(公告)日：2020-03-26

申请号：US16570660

申请日：2019-09-13

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： David Chesneau ,  Francois Amiard ,  Helene Esch

IPC: H02M3/158 ,  H02M1/08

Abstract: A method can be used for regulating a pulse-width modulation signal that is driving a voltage-buck switched-mode voltage regulator. The method includes comparing an input voltage of the switched-mode voltage regulator with a threshold voltage. The frequency of the pulse-width modulation signal is decreased when the input voltage is lower than the threshold voltage. The frequency is not decreased when the input voltage is not lower than the threshold voltage.

公开(公告)号：US10404246B2

公开(公告)日：2019-09-03

申请号：US15946506

申请日：2018-04-05

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics (Rousset) SAS

Inventor： Vincent Binet ,  David Chesneau

IPC: H03K5/1252 ,  H03K5/24 ,  H03K3/0233 ,  H03F3/19 ,  H03K19/20 ,  H03K5/00

Abstract: A comparison circuit includes an input interface configured to receive input signals and an output interface configured to deliver an output signal. A comparator is coupled between the input interface and the output interface. An amplifier is coupled between the input interface and the comparator. A neutralization circuit is configured to neutralize any change of state of the output signal starting from each moment in time at which the change of state of the output signal occurs and lasting for a second duration of propagation that compensates for a duration of propagation of signals within the amplifier.