公开(公告)号：US20180287597A1

公开(公告)日：2018-10-04

申请号：US16001682

申请日：2018-06-06

Applicant: STMicroelectronics S.r.l.

Inventor： Vanni Poletto ,  Andrea Maino

IPC: H03K5/1532 ,  H03K7/08 ,  H02P27/08

CPC classification number: H03K5/1532 ,  H02P7/02 ,  H02P7/025 ,  H02P7/04 ,  H02P27/085 ,  H03K7/08 ,  H03K17/165 ,  H03K17/689

Abstract: A ringing peak detector circuit includes an input buffer receives a pair of differential feedback signals indicating a drain-source voltage of the at least one low side electronic switch. The input buffer generates shifted differential feedback signals having a common mode voltage that is equal to approximately one half of the supply voltage. A peak detector circuit is coupled to the input buffer to receive the shifted differential voltage signals. The peak detector circuit detects a peak value of an oscillation on the inductive electric load and to generate an output signal indicating the detected peak value. A circuit generates a control signal based on the detected peak value and a maximum value, with the control signal being applied to the inductive electrical load driver to control switching of the at least one low side switch.

公开(公告)号：US09929731B2

公开(公告)日：2018-03-27

申请号：US15275363

申请日：2016-09-24

Applicant: STMicroelectronics S.r.l

Inventor： Daniele Zella ,  Vanni Poletto ,  Mauro Foppiani

IPC: H03K3/00 ,  H03K17/687 ,  G05F3/26 ,  H03K17/60

CPC classification number: H03K17/6872 ,  G05F3/26 ,  H03K17/60 ,  H03K17/687

Abstract: In one embodiment, a (pre)driver circuit includes first and a second output terminal for driving an electronic switch that includes a control terminal and a current path through the switch. The arrangement can operate in one or more first driving configurations (e.g., for PMOS), with the first and second output terminals are coupled to the current path and the control electrode of the electronic switch, respectively, and one or more second driving configurations (e.g., for NMOS, both HS and LS), wherein the first and second output terminals of the driver circuit are coupled to the control electrode and the current path of the electronic switch, respectively.

公开(公告)号：US20170322240A1

公开(公告)日：2017-11-09

申请号：US15372127

申请日：2016-12-07

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Vanni Poletto ,  Riccardo Miglierina ,  Antonio Davide Leone ,  Sergio Lecce

IPC: G01R19/165 ,  G11C27/02 ,  H03F3/45

CPC classification number: G01R19/1659 ,  G01R31/343 ,  G11C27/02 ,  H03F3/45179 ,  H03F2200/462

Abstract: A device measures the current in an inductive load using two separate current-measuring paths to detect the current in the inductive load. The inductive load is connected between first and second nodes, and the first node connected to a first voltage. The device includes first and second transistors cascaded together between the first node and a third node that is connected to a second voltage. First and second sense amplifiers measure the current in the inductive load. The first and second sense amplifiers are connected to at least one terminal of the first and second transistors. Two blocks sample and hold signals from the first and second sense amplifiers, which represent, respectively, the currents in the two separate current-measuring paths. The two currents are subtracted in a comparison node for generating an error signal that is compared with a predefined window and if outside the window a failure signal is generated.

公开(公告)号：US20170237427A1

公开(公告)日：2017-08-17

申请号：US15275363

申请日：2016-09-24

Applicant: STMicroelectronics S.r.l

Inventor： Daniele Zella ,  Vanni Poletto ,  Mauro Foppiani

IPC: H03K17/687 ,  H03K17/60 ,  G05F3/26

CPC classification number: H03K17/6872 ,  G05F3/26 ,  H03K17/60 ,  H03K17/687

Abstract: In one embodiment, a (pre)driver circuit includes first and a second output terminal for driving an electronic switch that includes a control terminal and a current path through the switch. The arrangement can operate in one or more first driving configurations (e.g., for PMOS), with the first and second output terminals are coupled to the current path and the control electrode of the electronic switch, respectively, and one or more second driving configurations (e.g., for NMOS, both HS and LS), wherein the first and second output terminals of the driver circuit are coupled to the control electrode and the current path of the electronic switch, respectively.

公开(公告)号：US09436193B2

公开(公告)日：2016-09-06

申请号：US14138402

申请日：2013-12-23

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Giovanni Luca Torrisi ,  Domenico Massimo Porto ,  Vanni Poletto

IPC: G05F1/46 ,  H02H1/04 ,  H02H9/00 ,  H02H3/02 ,  H02H9/02

CPC classification number: G05F1/462 ,  H02H1/043 ,  H02H3/025 ,  H02H9/002 ,  H02H9/025

Abstract: A driver for an electric load includes a power device having a control terminal and an output terminal for an output current, and a control module. The control module is configured to drive the power device in an auto-recovery mode by switching between activation and deactivation in the occurrence of an overcurrent condition, wherein the output current reaches a threshold current. The control module is also configured to evaluate a first time interval between a time wherein the overcurrent condition occurs, and a first time, and generate a limit signal when the time interval is equal to a time threshold. The power device is driven in a switching-off condition at least as a function of the limit signal.

Abstract translation: 用于电负载的驱动器包括具有控制端子和用于输出电流的输出端子的功率器件和控制模块。 控制模块被配置为通过在发生过电流状况的激活和停用之间切换来以自动恢复模式驱动电力设备，其中输出电流达到阈值电流。 控制模块还被配置为评估发生过电流状况的时间与第一次之间的第一时间间隔，并且当时间间隔等于时间阈值时产生限制信号。 功率器件至少作为限制信号的函数在关断状态下被驱动。