公开(公告)号：US10797688B2

公开(公告)日：2020-10-06

申请号：US16043346

申请日：2018-07-24

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano Ramorini ,  Germano Nicollini

IPC: H03K5/24 ,  G01R19/00 ,  H03K3/023 ,  G01R19/165

Abstract: A comparator circuit is implemented using a simple comparator core having two gain stages integrated in a single circuit block. The circuit operates with improved speed and resolution in comparison to a conventional continuous-time comparator. Offset trimming allows for the crossing time of the comparator to be adjusted close to an ideal crossing time.

公开(公告)号：US09979302B2

公开(公告)日：2018-05-22

申请号：US15394295

申请日：2016-12-29

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Alberto Cattani ,  Alessandro Gasparini ,  Stefano Ramorini

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33515 ,  H02M1/08 ,  H02M3/335 ,  H02M2001/0025

Abstract: A control device for a switching power converter having an inductor element, a switch coupled to the inductor element, a storage element coupled to an output on which an output voltage is provided, and a diode element coupled to the storage element. The control device generates a command signal to control the switch and determine storage of energy in the inductor element in a first interval, and transfer of energy onto the storage element through the diode element in a second interval. A voltage shifter module generates a feedback voltage shifted relative to the output voltage. An amplification module has a first input receiving the feedback voltage, a second input receiving the reference voltage, and an output that supplies, as a function of the difference between the feedback and reference voltages, a control signal. A control unit receives the control signal and generates the command signal to control the switch.

公开(公告)号：US09954394B2

公开(公告)日：2018-04-24

申请号：US15226473

申请日：2016-08-02

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano Ramorini ,  Alessandro Gasparini ,  Alberto Cattani

IPC: H02J15/00 ,  H02M3/158 ,  H02N2/18 ,  H02M7/04 ,  H02M7/217 ,  H02M1/00

CPC classification number: H02J15/00 ,  H02M3/1588 ,  H02M7/04 ,  H02M7/217 ,  H02M2001/0009 ,  H02N2/181 ,  Y02B70/1466

Abstract: An energy-scavenging interface includes first and second switches connected in series between an input and reference, and third and fourth switches connected in series between the input and an output. A control circuit closes the first and second switches and opens the third switch for a first time interval to store charge in a storage element. A scaled copy of a peak value of the charging current is obtained. The control circuit then opens the first switch and closes the third and fourth switches to generate an output signal as long as the value in current of the output signal is higher than the value of said scaled copy of the peak value.

公开(公告)号：US09263942B2

公开(公告)日：2016-02-16

申请号：US14036458

申请日：2013-09-25

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano Ramorini ,  Alessandro Gasparini ,  Alberto Cattani

IPC: H02M3/155 ,  H02M7/06 ,  H02M1/32 ,  H02M1/42 ,  H02M3/158 ,  H02M7/217 ,  F03G5/06 ,  H01F27/40

CPC classification number: H02M3/155 ,  F03G5/06 ,  H01F27/40 ,  H02M1/32 ,  H02M1/4208 ,  H02M3/158 ,  H02M7/06 ,  H02M7/068 ,  H02M7/217 ,  Y02B70/126

Abstract: An energy-scavenging interface receives an input signal from a transducer and supplies an output signal to a load. A switch is connected between the transducer and a reference node, and a diode is connected between the transducer and the load. A control circuit closes the switch for a time interval to permit energy storage in the transducer. A scale copy of a peak value of stored electric current is obtained. The switch is opened when the time interval elapses and the stored energy exceeds a threshold. The stored energy is then released to supply the load through the diode. The switch remains open as long as the value of current in the output signal exceeds the value of the scaled copy of the peak value.

Abstract translation: 能量清除界面接收来自换能器的输入信号并将输出信号提供给负载。 开关连接在传感器和参考节点之间，二极管连接在传感器和负载之间。 控制电路将开关闭合一段时间间隔，以允许传感器中的能量存储。 获得存储电流的峰值的比例拷贝。 当经过时间间隔并且存储的能量超过阈值时，开关被打开。 然后释放存储的能量以通过二极管提供负载。 只要输出信号中的电流值超过峰值的缩放副本的值，开关就保持打开。

公开(公告)号：US20150234416A1

公开(公告)日：2015-08-20

申请号：US14616119

申请日：2015-02-06

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano Ramorini ,  Alessandro Gasparini ,  Alberto Cattani ,  Federica Papotti

IPC: G05F5/00

CPC classification number: G05F5/00 ,  H02J50/00 ,  H02J50/10 ,  H02J50/15 ,  H02M7/219

Abstract: An energy harvesting interface receives an electrical signal from an inductive transducer and supplies a supply signal. The interface includes an input branch with a first switch and a second switch connected together in series between a first input terminal and an output terminal. The interface further includes a third switch and a fourth switch connected together in series between a second input terminal and the output terminal. A first electrical-signal-detecting device, coupled across the second switch, detects a first threshold value of an electric storage current in the inductor of the transducer. A second electrical-signal-detecting device, coupled across the fourth switch, detects whether the electric supply current that flows through the fourth switch reaches a second threshold value lower than the first threshold value. The second threshold is derived from the electric storage current.

Abstract translation: 能量采集接口从感应传感器接收电信号并提供电源信号。 接口包括具有第一开关和第二开关的输入分支，第一开关和第二开关串联连接在第一输入端子和输出端子之间。 该接口还包括串联连接在第二输入端和输出端之间的第三开关和第四开关。 耦合在第二开关上的第一电信号检测装置检测换能器的电感器中的蓄电电流的第一阈值。 耦合在第四开关上的第二电信号检测装置检测流经第四开关的电源电流是否达到低于第一阈值的第二阈值。 第二阈值来自蓄电流。