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公开(公告)号：US12135572B2
公开(公告)日：2024-11-05
申请号：US17694182
申请日：2022-03-14
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Cattani , Alessandro Gasparini , Stefano Ramorini
IPC: G05F1/56
Abstract: In an embodiment, a method includes: providing a voltage setpoint to a voltage converter; generating an output voltage at a voltage rail with the voltage converter based on the voltage setpoint; when the voltage setpoint is transitioning from a first voltage setpoint to a second voltage setpoint that has a lower magnitude than the first voltage setpoint, providing a first constant current to a first node coupled to a control terminal of an output transistor to turn on the output transistor, where the output transistor includes a source terminal coupled to a first terminal of a first resistor, and where a current path of the output transistor is coupled to the voltage rail; and turning off the output transistor after the output voltage reaches the target output voltage corresponding to the second voltage setpoint.
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公开(公告)号：US11626799B2
公开(公告)日：2023-04-11
申请号：US17393243
申请日：2021-08-03
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Bertolini , Alberto Cattani , Stefano Ramorini , Alessandro Gasparini
Abstract: A converter circuit includes first and second electronic switches coupled at an intermediate node, with an inductor coupled between the intermediate node and an output node. Switching drive control circuitry causes the first and the second electronic switch to switch between a conductive state and a non-conductive state. The drive control circuitry includes a first feedback signal path to control switching of the first and the second electronic switch as a function of the difference between a feedback signal indicative of the signal at the output node and a reference value. A second feedback signal path includes a low-pass filter coupled to the output node and configured to provide a low-pass filtered feedback signal resulting from low-pass filtering of the output signal. The second feedback signal path compensates the feedback signal as a function of the difference between the low-pass filtered feedback signal and a respective reference value.
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公开(公告)号：US11094807B2
公开(公告)日：2021-08-17
申请号：US16561670
申请日：2019-09-05
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Cattani , Alessandro Gasparini
IPC: H01L29/739 , H02M3/158 , H02M1/32 , H02M1/088
Abstract: A power MOS stage includes a first power MOS device and a second power MOS devices connected in parallel between a first node and a second node, the first power MOS device having a first voltage rating and the second power MOS device having a second voltage rating that is lower than the first voltage rating. A driver circuit is configured to drive control nodes of the first and second power MOS devices in a sequential manner when actuating the power MOS stage by actuating the first power MOS device before actuating the second power MOS device. The control nodes of the first and second power MOS devices are further driven in a sequential manner when deactuating the power MOS stage by deactuating the second power MOS device before deactuating the first power MOS device.
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公开(公告)号：US10439569B2
公开(公告)日：2019-10-08
申请号：US15984942
申请日：2018-05-21
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Ramorini , Alberto Cattani , Germano Nicollini , Alessandro Gasparini
Abstract: A switching amplifier, such as a Class D amplifier, includes a current sensing circuit. The current sensing circuit is formed by replica loop circuits that are selectively coupled to corresponding output inverter stages of the switching amplifier. The replica loop circuits operated to produce respective replica currents of the output currents generated by the output inverter stages. A sensing circuitry is coupled to receive the replica currents from the replica loop circuits and operates to produce an output sensing signal as a function of the respective replica currents.
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公开(公告)号：US10118819B2
公开(公告)日：2018-11-06
申请号：US15410394
申请日：2017-01-19
Applicant: STMICROELECTRONICS S.R.L.
Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.
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Patent Agency Ranking
16.发明申请ENHANCED-EFFICIENCY ENERGY-SCAVENGING INTERFACE, METHOD FOR OPERATING THE ENERGY-SCAVENGING INTERFACE, AND ENERGY-SCAVENGING SYSTEM COMPRISING THE ENERGY-SCAVENGING INTERFACE 审中-公开提高能源消耗接口，操作能量消耗接口的方法，以及包含能量消耗接口的能量扫描系统公开(公告)号：US20160344235A1
公开(公告)日：2016-11-24
申请号：US15226473
申请日：2016-08-02
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Ramorini , Alessandro Gasparini , Alberto Cattani
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.
Abstract translation: 能量清除界面包括串联连接在输入和参考之间的第一和第二开关以及串联连接在输入和输出之间的第三和第四开关。 控制电路关闭第一和第二开关并打开第一开关第一时间间隔以将电荷存储在存储元件中。 获得充电电流的峰值的缩放副本。 只要输出信号的电流值高于峰值的缩放副本的值，控制电路就打开第一开关并闭合第三和第四开关以产生输出信号。
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17.发明授权Enhanced efficiency energy-scavenging interface, method for operating the energy-scavenging interface, and energy-scavenging system comprising the energy-scavenging interface 有权提高效率能量清除界面，操作能量清除界面的方法，以及包括能量清除界面的能量清除系统公开(公告)号：US09461504B2
公开(公告)日：2016-10-04
申请号：US14036751
申请日：2013-09-25
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Ramorini , Alessandro Gasparini , Alberto Cattani
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.
Abstract translation: 能量清除界面包括在输入和参考之间串联连接的第一和第二开关以及串联连接在输入和输出之间的第三和第四开关。 控制电路关闭第一和第二开关并打开第一开关第一时间间隔以将电荷存储在存储元件中。 获得充电电流的峰值的缩放副本。 只要输出信号的电流值高于峰值的缩放副本的值，控制电路就打开第一开关并闭合第三和第四开关以产生输出信号。
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18.发明申请公开(公告)号：US20150260542A1
公开(公告)日：2015-09-17
申请号：US14638392
申请日：2015-03-04
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Gasparini , Stefano Ramorini , Alberto Cattani
CPC classification number: G01C22/006 , F03G5/06 , F03G7/08 , G01D5/12 , H02J50/00
Abstract: A step-detection device for detecting the steps taken by a user (for counting) includes a transducer that generates an electrical transduction signal as a function of step mechanical activity. An energy scavenging system, coupled to the transducer, generates electrical energy starting from the mechanical activity in order to supply an output supply signal in response to the electrical transduction signal. A voltage-regulator generates a regulated supply signal from the output supply signal. A transmission stage, supplied by the voltage-regulating stage, initiates a wireless transmission indicative of step detection, that wireless transmission causing an increment of a step count at a remote location. The transmission stage makes the wireless transmission when the regulated supply signal exceeds a first threshold. Completion of the wireless transmission is indicative of the occurrence of a step.
Abstract translation: 用于检测用户步骤（用于计数）的步进检测装置包括产生作为步进机械活动的函数的电转换信号的换能器。 耦合到换能器的能量清除系统从机械活动开始产生电能，以响应于电转换信号提供输出电源信号。 电压调节器从输出电源信号产生稳定的电源信号。 由电压调节级提供的发送级发起指示步进检测的无线传输，该无线传输导致远程位置的步数增加。 当调节电源信号超过第一阈值时，发送级进行无线传输。 无线传输的完成表示步骤的发生。
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19.发明申请STEP COUNTER DEVICE WITH ENERGY-SCAVENGING FUNCTIONALITY, AND STEP-COUNTING METHOD 有权具有能量增强功能的步骤计数器装置和步进计数方法公开(公告)号：US20140088917A1
公开(公告)日：2014-03-27
申请号：US14034764
申请日：2013-09-24
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Gasparini , Stefano Ramorini , Alberto Cattani
IPC: G01C22/00
CPC classification number: G01C22/006 , A43B3/0015 , H02M7/219
Abstract: A step-counter device detects and counts user steps. The device includes a transducer configured to generate an electrical transduction signal in response to user stepping. An energy-scavenging system is coupled to the transducer to generate a power supply voltage in response to the electrical transduction signal. A processing unit is powered by the power supply voltage. The processing unit is further configured to sense the electrical transduction signal and determine whether a user step has occurred and in response to that determination increment a step counter.
Abstract translation: 步进计数器装置检测和计数用户步骤。 该装置包括被配置为响应于用户步进产生电传导信号的换能器。 能量清除系统耦合到换能器以响应于电传导信号产生电源电压。 处理单元由电源电压供电。 处理单元还被配置为感测电转换信号并且确定用户步骤是否已经发生，并且响应于该确定增量而进行步进计数器。
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公开(公告)号：US12212235B2
公开(公告)日：2025-01-28
申请号：US17671163
申请日：2022-02-14
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Bertolini , Alberto Cattani , Stefano Ramorini , Alessandro Gasparini
Abstract: A control circuit operates to control a switching stage of an electronic converter. The control circuit includes: first terminals providing drive signals to electronic switches of the switching stage; a second terminal receiving from a feedback circuit a first feedback signal proportional to a converter output voltage; and a third terminal configured to receive from a current sensor a second feedback signal proportional to an inductor current. A driver circuit provides the drive signals as a function of a PWM signal generated by a generator circuit as a function of the first and second feedback signals, a reference voltage and a slope compensation signal. A mode selection signal is generated as a function of a comparison between the input voltage and the output voltage. A feed-forward compensation circuit is configured to source and/or sink a compensation current as a function of a variation in the mode selection signal.
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