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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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公开(公告)号：US10277178B2
公开(公告)日：2019-04-30
申请号：US15692425
申请日：2017-08-31
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Ramorini , Germano Nicollini , Alberto Cattani , Alessandro Gasparini
Abstract: A triangular-voltage generator has an input terminal that receives a power supply voltage and an output terminal that supplies a triangular-wave voltage having a repetition period. An operational amplifier in an integrator configuration has a first input, a second input and an output coupled to the output terminal. The second input receives a reference voltage as a function of the power supply voltage. The first input is selectively and alternately connected to the input terminal during a first half-period of the repetition period and to a reference terminal during a second half-period of the repetition period.
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公开(公告)号：US20180234062A1
公开(公告)日：2018-08-16
申请号：US15692425
申请日：2017-08-31
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Ramorini , Germano Nicollini , Alberto Cattani , Alessandro Gasparini
CPC classification number: H03F3/217 , H03F1/0211 , H03F3/2173 , H03F2200/141 , H03F2200/351 , H03K4/06 , H03K4/066
Abstract: A triangular-voltage generator has an input terminal that receives a power supply voltage and an output terminal that supplies a triangular-wave voltage having a repetition period. An operational amplifier in an integrator configuration has a first input, a second input and an output coupled to the output terminal. The second input receives a reference voltage as a function of the power supply voltage. The first input is selectively and alternately connected to the input terminal during a first half-period of the repetition period and to a reference terminal during a second half-period of the repetition period.
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公开(公告)号：US20180034376A1
公开(公告)日：2018-02-01
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
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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35.发明授权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收集界面，用于操作能量收集界面的方法以及使用能量收集界面的能量收集系统公开(公告)号：US09541941B2
公开(公告)日：2017-01-10
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
36.发明授权Enhanced DC-DC converter, method for operating the DC-DC converter, environmental energy-harvesting system comprising the DC-DC converter, and apparatus comprising the energy-harvesting system 有权增强型DC-DC转换器，用于操作DC-DC转换器的方法，包括DC-DC转换器的环境能量收集系统以及包括能量收集系统公开(公告)号：US09450489B2
公开(公告)日：2016-09-20
申请号：US14181063
申请日：2014-02-14
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Gasparini , Eugenio Miluzzi , Alberto Cattani , Stefano Ramorini
CPC classification number: H02M3/158 , H02M3/1584 , H02M3/33561 , H02M2001/0087 , H02M2001/009 , Y10T307/406
Abstract: A DC-DC converter independently supplies electrical loads. For each load, an output load signal is compared to a reference to generate a result indicating a need to supply the respective electrical load. A first detection is made as to whether a first electrical load needs to be supplied and a second detection is made as to whether any remaining electrical loads need to be supplied. The first electrical load is supplied if the first detection is positive and the second detection is negative.
Abstract translation: DC-DC转换器独立提供电气负载。 对于每个负载，将输出负载信号与参考值进行比较以产生指示需要提供相应的电负载的结果。 首先检查是否需要提供第一电负载，并且进行第二次检测以确定是否需要提供任何剩余的电负载。 如果第一次检测为正，第二个检测为负，则提供第一个电气负载。
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37.发明申请ENHANCED DC-DC CONVERTER, METHOD FOR OPERATING THE DC-DC CONVERTER, ENVIRONMENTAL ENERGY-HARVESTING SYSTEM COMPRISING THE DC-DC CONVERTER, AND APPARATUS COMPRISING THE ENERGY-HARVESTING SYSTEM 有权增强的DC-DC转换器，DC-DC转换器的操作方法，包含DC-DC转换器的环境能量收集系统以及包含能量收集系统的装置公开(公告)号：US20140232189A1
公开(公告)日：2014-08-21
申请号：US14181063
申请日：2014-02-14
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Gasparini , Eugenio Miluzzi , Alberto Cattani , Stefano Ramorini
CPC classification number: H02M3/158 , H02M3/1584 , H02M3/33561 , H02M2001/0087 , H02M2001/009 , Y10T307/406
Abstract: A DC-DC converter independently supplies electrical loads. For each load, an output load signal is compared to a reference to generate a result indicating a need to supply the respective electrical load. A first detection is made as to whether a first electrical load needs to be supplied and a second detection is made as to whether any remaining electrical loads need to be supplied. The first electrical load is supplied if the first detection is positive and the second detection is negative.
Abstract translation: DC-DC转换器独立提供电气负载。 对于每个负载，将输出负载信号与参考值进行比较以产生指示需要提供相应的电负载的结果。 首先检查是否需要提供第一电负载，并且进行第二次检测以确定是否需要提供任何剩余的电负载。 如果第一次检测为正，第二个检测为负，则提供第一个电气负载。
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公开(公告)号：US12267084B2
公开(公告)日：2025-04-01
申请号：US17980188
申请日：2022-11-03
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Attanasio , Stefano Ramorini
Abstract: A converter system includes a reference buffer buffering a reference input to produce a DAC reference, operating from a reference feedback voltage generated by a reference divider. A tail buffer generates a tail voltage from an input voltage generated from the DAC reference by a tail divider. An R-2R type DAC utilizes an R-2R ladder to generate a DAC output from a code. This ladder has a tail resistor coupled to the tail voltage. A feedback buffer buffers the DAC output to produce a converter reference. A DC-DC converter generates a DC output from a DC input, based upon a converter feedback voltage. A feedback divider coupled between the DC output and the converter reference generates the converter feedback voltage. Control circuitry selectively taps the reference divider to produce the reference feedback voltage (performing gain trimming) and selectively taps the tail divider to produce the input voltage (performing offset trimming).
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公开(公告)号：US12267011B2
公开(公告)日：2025-04-01
申请号：US17122132
申请日：2020-12-15
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 includes hand and low side switches. A comparator generates a PWM signal for controlling the converter as a function of the duty cycle of the PWM signal in response to a signal at an intermediate node between the hand and low side 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 signal irrespective of converter operation.
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公开(公告)号：US20220173657A1
公开(公告)日：2022-06-02
申请号：US17533519
申请日：2021-11-23
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Ramorini , Roberto Pio Baorda
Abstract: A sensor circuit for a power FET monitors current flowing through the FET and includes a regulator circuit regulating a first current flowing through a sense resistance, so voltage drop at the sense resistance corresponds to voltage drop between terminals of the FET. A measurement circuit provides a second current corresponding (or being proportional) to the first current. A first switch selectively applies the second current to a resistor based on a first control signal, and a low pass filter generates a low-pass filtered signal by filtering voltage at the resistor. A voltage follower generates a replica of the low-pass filtered signal, and a second switch selectively applies the replica to the resistor. When the FET is closed, a control circuit closes the first switch and opens the second electronic switch. When the FET is opened, the control circuit opens the first electronic switch and closes the second electronic switch.
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