公开(公告)号：US09329649B2

公开(公告)日：2016-05-03

申请号：US13683937

申请日：2012-11-21

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Gasparini ,  Andrea Donadel ,  Stefano Ramorini

IPC: H02J1/10 ,  H02M3/158 ,  G06F1/26

CPC classification number: G06F1/26 ,  Y10T307/696

Abstract: A dual input single output (DISO) regulator, includes a comparator configured to receive a first and second power supply signal and to provide a first compared signal; a first switch configured to couple the first power supply source to an intermediate node, and a second switch configured to couple the second power supply source to the intermediate node; a control logic circuit, coupled to the first comparator, to the first switch, and to the second switch, and configured to receive the compared signal to control the first and the second switch in a first and second operating condition based on the compared signal. The intermediate node being biased by an intermediate power supply signal correlated to the first or second power supply signal. The DISO regulator includes a low-dropout regulator, configured to provide a regulated power supply signal based on the intermediate power supply signal.

Abstract translation: 双输入单输出（DISO）调节器包括比较器，被配置为接收第一和第二电源信号并提供第一比较信号; 配置为将第一电源耦合到中间节点的第一开关和被配置为将第二电源耦合到中间节点的第二开关; 耦合到第一比较器的控制逻辑电路连接到第一开关和第二开关，并且被配置为接收比较的信号，以基于所比较的信号在第一和第二操作条件下控制第一和第二开关。 中间节点被与第一或第二电源信号相关的中间电源信号偏置。 DISO调节器包括一个低压差稳压器，配置成基于中间电源信号提供稳压电源信号。

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

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/08

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.

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

IPC: H03L7/099 ,  H02M1/00 ,  H02M3/158 ,  H03L7/07 ,  H03L7/081 ,  H03L7/091 ,  H03L7/10

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.

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

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00

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.

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

IPC: H02M3/158 ,  H02M3/156

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.

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

IPC: H03K4/06 ,  H03F3/217 ,  H03F1/02

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.

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

IPC: H03F3/217 ,  H03K4/06 ,  H03F1/02

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.

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.

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

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。

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

IPC: H02M3/158 ,  H02M3/335 ,  H02J1/00 ,  H02M1/00

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。