公开(公告)号：US20210080491A1

公开(公告)日：2021-03-18

申请号：US17103692

申请日：2020-11-24

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimiliano Gobbi ,  Ignazio Salvatore Bellomo ,  Domenico Tripodi ,  Antonio Borrello ,  Alberto Bianco

IPC: G01R19/165 ,  G01R19/04

Abstract: An active discharge circuit discharges an X capacitor and includes a sensor circuit that generates a sensor signal indicative of an AC voltage at the X capacitor. A processing unit generates a reset signal as a function of a comparison signal. A comparator circuit generates the comparison signal by comparing the sensor signal with a threshold. A timer circuit sets a discharge enable signal to a first logic level when the timer circuit is reset via a reset signal. The timer circuit determines the time elapsed since the last reset and tests whether the time elapsed exceeds a given timeout value. If the time elapsed exceeds the given timeout value, the timer circuit sets the discharge enable signal to a second logic level. A dynamic threshold generator circuit varies the threshold of the comparator circuit as a function of the sensor signal.

公开(公告)号：US10345348B2

公开(公告)日：2019-07-09

申请号：US14838125

申请日：2015-08-27

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimiliano Gobbi ,  Ignazio Salvatore Bellomo ,  Domenico Tripodi ,  Antonio Borrello ,  Alberto Bianco

IPC: H02J7/00 ,  G01R19/165 ,  G01R19/04 ,  H02M1/32 ,  H02J7/34

Abstract: An active discharge circuit discharges an X capacitor and includes a sensor circuit that generates a sensor signal indicative of an AC voltage at the X capacitor. A processing unit generates a reset signal as a function of a comparison signal. A comparator circuit generates the comparison signal by comparing the sensor signal with a threshold. A timer circuit sets a discharge enable signal to a first logic level when the timer circuit is reset via a reset signal. The timer circuit determines the time elapsed since the last reset and tests whether the time elapsed exceeds a given timeout value. If the time elapsed exceeds the given timeout value, the timer circuit sets the discharge enable signal to a second logic level. A dynamic threshold generator circuit varies the threshold of the comparator circuit as a function of the sensor signal.

公开(公告)号：US20160124029A1

公开(公告)日：2016-05-05

申请号：US14838125

申请日：2015-08-27

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimiliano Gobbi ,  Ignazio Salvatore Bellomo ,  Domenico Tripodi ,  Antonio Borrello ,  Alberto Bianco

IPC: G01R19/165 ,  H02J7/00 ,  G01R19/04

CPC classification number: G01R19/16557 ,  G01R19/04 ,  H02J7/0072 ,  H02J7/345 ,  H02M2001/322

Abstract: An active discharge circuit discharges an X. The detection circuit includes a sensor circuit that generates a sensor signal indicative of an AC oscillation voltage at the X capacitor. The detection circuit also includes a processing unit that generates the reset signal as a function of a comparison signal. A comparator circuit generates the comparison signal by comparing the sensor signal with a threshold. A timer circuit sets a discharge enable signal to a first logic level when the timer circuit is reset via a reset signal. The timer circuit determines the time elapsed since the last reset and tests whether the time elapsed exceeds a given timeout value. If the time elapsed exceeds the given timeout value, the timer circuit sets the discharge enable signal to a second logic level. A dynamic threshold generator circuit varies the threshold of the comparator circuit as a function of the sensor signal.

Abstract translation: 有源放电电路对X放电。检测电路包括传感器电路，其生成表示X电容器处的交流振荡电压的传感器信号。 检测电路还包括根据比较信号产生复位信号的处理单元。 比较器电路通过将传感器信号与阈值进行比较来生成比较信号。 当定时器电路通过复位信号复位时，定时器电路将放电使能信号设置为第一逻辑电平。 定时器电路确定自上次复位以来经过的时间，并测试经过的时间是否超过给定的超时值。 如果经过的时间超过给定的超时值，则定时器电路将放电使能信号设置为第二逻辑电平。 动态阈值发生器电路根据传感器信号改变比较器电路的阈值。

公开(公告)号：US10890606B2

公开(公告)日：2021-01-12

申请号：US16443439

申请日：2019-06-17

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimiliano Gobbi ,  Ignazio Salvatore Bellomo ,  Domenico Tripodi ,  Antonio Borrello ,  Alberto Bianco

IPC: G01R19/04 ,  G01R19/165 ,  H02J7/00 ,  H02J7/34 ,  H02M1/32

Abstract: An active discharge circuit discharges an X capacitor and includes a sensor circuit that generates a sensor signal indicative of an AC voltage at the X capacitor. A processing unit generates a reset signal as a function of a comparison signal. A comparator circuit generates the comparison signal by comparing the sensor signal with a threshold. A timer circuit sets a discharge enable signal to a first logic level when the timer circuit is reset via a reset signal. The timer circuit determines the time elapsed since the last reset and tests whether the time elapsed exceeds a given timeout value. If the time elapsed exceeds the given timeout value, the timer circuit sets the discharge enable signal to a second logic level. A dynamic threshold generator circuit varies the threshold of the comparator circuit as a function of the sensor signal.

公开(公告)号：US11750010B2

公开(公告)日：2023-09-05

申请号：US17103692

申请日：2020-11-24

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimiliano Gobbi ,  Ignazio Salvatore Bellomo ,  Domenico Tripodi ,  Antonio Borrello ,  Alberto Bianco

IPC: H02J7/34 ,  G01R19/04 ,  H02J7/00 ,  G01R19/165 ,  H02M1/32

CPC classification number: H02J7/0071 ,  G01R19/04 ,  G01R19/16557 ,  H02J7/345 ,  H02M1/322

Abstract: A method and apparatus for an active discharge of an X-capacitor are provided. A sensor signal, indicative of a voltage at the capacitor, is compared with a lower and upper threshold values. A first value of a smaller one of the lower and upper threshold values is increased to a first new value that is greater than a second value of a larger one of the lower and upper threshold values in response to a first control signal indicating the sensor signal is greater than the upper and lower threshold values. A third value of the greater one of the lower and upper threshold values is decreased to a second new value that is less than the value of the larger one of the lower and upper threshold values in response to a second control signal indicating the sensor signal is less than the upper and lower threshold values.

公开(公告)号：US20220069627A1

公开(公告)日：2022-03-03

申请号：US17461305

申请日：2021-08-30

Applicant: STMicroelectronics (Grand Ouest) SAS ,  STMicroelectronics S.r.l.

Inventor： Lionel Cimaz ,  Antonio Borrello ,  Simone Ludwig Dalla Stella

IPC: H02J50/12 ,  H04B5/00

Abstract: The present disclosure relates to a device comprising an inductive element and a first capacitive element series connected between a first node and a second node, a first MOS transistor connected between the first node and a third node configured to receive a reference potential, the second node being coupled directly or via a second MOS transistor to the third node, a second capacitive element connected between a fourth node and an interconnection node between the first capacitive element and the inductive element, a current generator configured to provide an AC current to the fourth node, and a switch connected between the fourth node and the third node.

公开(公告)号：US12160117B2

公开(公告)日：2024-12-03

申请号：US18154394

申请日：2023-01-13

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics (Grand Ouest) SAS

Inventor： Lionel Cimaz ,  Antonio Borrello ,  Simone Ludwig Dalla Stella

IPC: H02J50/12 ,  H04B5/24 ,  H04B5/79

Abstract: The present disclosure relates to a device comprising an inductive element and a first capacitive element series connected between a first node and a second node, a first MOS transistor connected between the first node and a third node configured to receive a reference potential, the second node being coupled directly or via a second MOS transistor to the third node, a second capacitive element connected between a fourth node and an interconnection node between the first capacitive element and the inductive element, a current generator configured to provide an AC current to the fourth node, and a switch connected between the fourth node and the third node.

公开(公告)号：US11588353B2

公开(公告)日：2023-02-21

申请号：US17461305

申请日：2021-08-30

Applicant: STMicroelectronics (Grand Ouest) SAS ,  STMicroelectronics S.r.l.

Inventor： Lionel Cimaz ,  Antonio Borrello ,  Simone Ludwig Dalla Stella

IPC: H02J50/12 ,  H04B5/00

Abstract: The present disclosure relates to a device comprising an inductive element and a first capacitive element series connected between a first node and a second node, a first MOS transistor connected between the first node and a third node configured to receive a reference potential, the second node being coupled directly or via a second MOS transistor to the third node, a second capacitive element connected between a fourth node and an interconnection node between the first capacitive element and the inductive element, a current generator configured to provide an AC current to the fourth node, and a switch connected between the fourth node and the third node.