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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
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.
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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
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.
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公开(公告)号：US09604842B2
公开(公告)日：2017-03-28
申请号：US14675230
申请日：2015-03-31
Applicant: STMICROELECTRONICS S.R.L.
CPC classification number: B81B7/008 , B81B3/00 , B81B7/04 , B81B2201/0257 , B81B2207/03 , B81B2207/053 , H04R3/007 , H04R3/12 , H04R19/005 , H04R2201/003
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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14.发明授权公开(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
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。
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15.发明申请ENERGY HARVESTING INTERFACE WITH IMPROVED IMPEDANCE MATCHING, METHOD FOR OPERATING THE ENERGY HARVESTING INTERFACE, AND ENERGY HARVESTING SYSTEM USING THE ENERGY HARVESTING INTERFACE 有权具有改进的阻抗匹配的能量采集接口，操作能量采集接口的方法和使用能量采集接口的能量采集系统公开(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
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。
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Patent Agency Ranking
公开(公告)号：US12244215B2
公开(公告)日：2025-03-04
申请号：US17851901
申请日：2022-06-28
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Cattani
Abstract: A first switch couples an input node receiving a main control signal for a main switching stage of a multi-phase converter to an output node delivering a secondary control signal for a secondary switching stage following actuation of the secondary switching stage. A second switch couples the output node to a capacitor during a time period of actuation/deactuation of the secondary switching stage. Current is sourced to the capacitor during the actuation time period or sunk from the capacitor during the deactuation time period. The sourced or sunk current may be generated proportional to the main control signal.
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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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18.发明授权公开(公告)号：US12191869B2
公开(公告)日：2025-01-07
申请号：US17982712
申请日：2022-11-08
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Bertolini , Alberto Cattani , Alessandro Gasparini
Abstract: In a control circuit for a switching stage of an electronic converter, a phase detector generates a drive signal in response to a phase difference between first and second clock signals. The first and second clock signals are generated by first and second current-controlled oscillators, respectively. An operational transconductance amplifier generates first and second control currents in response to a difference between a reference and a feedback of the electronic converter, with the first and second currents applied to control the first and second current-controlled oscillators. In response to a switching clock having a first state, a switching circuit applies first and second bias currents to the control inputs of the first and second current-controlled oscillators, respectively. Conversely, in response to the switching clock having a second state, the switching circuit applies the second and first bias currents to the control inputs of the first and second current-controlled oscillators, respectively.
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19.发明授权公开(公告)号：US11323031B2
公开(公告)日：2022-05-03
申请号：US16924410
申请日：2020-07-09
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Cattani , Alessandro Gasparini
Abstract: First and second FETs of a half-bridge are series connected between first and second terminals and are gate driven, respectively, by first and second drivers. An inductance is connected to the intermediate node of the half-bridge. Power supply for the second driver circuit is a supply voltage generated by a voltage regulator as a function of the voltage between the first and the second terminal. Power supply for the first driver circuit is a supply voltage generated by a bootstrap capacitor having a first terminal connected via a first switch to receive the supply voltage output from the voltage regulator and a second terminal connected to the intermediate node. The first terminal of the bootstrap capacitor is further connected by a second switch to receive a second supply voltage. A control circuit generates control signals for the first and second driver circuits and the first and second switches.
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公开(公告)号：US10897200B2
公开(公告)日：2021-01-19
申请号：US16406834
申请日：2019-05-08
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Cattani , Stefano Ramorini , Alessandro Gasparini
Abstract: A half-bridge converter is controlled by a circuit including a differential circuit receiving a reference signal and a feedback signal which is a function of an output signal from the converter. The half-bridge converter includes high-side and low-side electronic switches. A comparator generates a PWM-modulated signal for controlling the converter as a function of the duty cycle of the PWM-modulated signal in response to a signal at an intermediate node between the high-side and low-side electronic switches and an output of the differential circuit. A gain circuit block coupled between the intermediate node and the input of the comparator applies a ramp signal to the input of the comparator which is a function of the signal at the intermediate node. A variable gain is applied by the gain circuit block in order to keep a constant value for the duty cycle of said PWM-modulated signal irrespective of converter operation.
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