公开(公告)号：US11881779B2

公开(公告)日：2024-01-23

申请号：US17533042

申请日：2021-11-22

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Nicolosi ,  Valeria Bottarel

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0009

Abstract: In an embodiment a DC-DC switching power converter includes a switching circuitry including switches, the switching circuitry configured to receive a DC input voltage and generate a DC output voltage via switching the switches, a switching control circuitry configured to control switching of the switches with a switching signal having a corresponding switching frequency with a corresponding duty cycle, the DC output voltage generated by the switching circuitry depending on the duty cycle, wherein the switching control circuitry is configured to set the duty cycle based on a difference between the DC output voltage and a reference voltage in a closed loop configuration and a compensation network configured to provide stability to an operation of the DC-DC switching power converter, wherein the compensation network has a capacitance having a value depending on the switching frequency.

公开(公告)号：US20230006545A1

公开(公告)日：2023-01-05

申请号：US17364063

申请日：2021-06-30

Applicant: STMicroelectronics S.r.l.

Inventor： Juri Giovannone ,  Valeria Bottarel ,  Stefano Corona

IPC: H02M3/04 ,  H03K5/14 ,  H03K5/131

Abstract: A direct current (DC) to DC (DC-DC) converter includes a comparator configured to set a pulse width of a signal pulse, the pulse width corresponding to a voltage level of an output voltage of the DC-DC converter; a digital delay line (DDL) operatively coupled to the comparator, the DDL configured increase the pulse width of the signal pulse by linearly introducing delays to the signal pulse; a multiplexer operatively coupled to the DDL, the multiplexer configured to selectively output a delayed version of the signal pulse; and a logic control circuit operatively coupled to the multiplexer and the DDL, the logic control circuit configured to adaptively adjust a precision of the DC-DC converter in accordance with a duty cycle of the DC-DC converter and a setpoint of the DC-DC converter.

公开(公告)号：US20220190721A1

公开(公告)日：2022-06-16

申请号：US17533042

申请日：2021-11-22

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Nicolosi ,  Valeria Bottarel

IPC: H02M3/158

Abstract: In an embodiment a DC-DC switching power converter includes a switching circuitry including switches, the switching circuitry configured to receive a DC input voltage and generate a DC output voltage via switching the switches, a switching control circuitry configured to control switching of the switches with a switching signal having a corresponding switching frequency with a corresponding duty cycle, the DC output voltage generated by the switching circuitry depending on the duty cycle, wherein the switching control circuitry is configured to set the duty cycle based on a difference between the DC output voltage and a reference voltage in a closed loop configuration and a compensation network configured to provide stability to an operation of the DC-DC switching power converter, wherein the compensation network has a capacitance having a value depending on the switching frequency.

公开(公告)号：US10177759B2

公开(公告)日：2019-01-08

申请号：US15193600

申请日：2016-06-27

Applicant: STMicroelectronics S.R.L.

Inventor： Valeria Bottarel ,  Sandro Rossi

IPC: H03K17/687 ,  A61B8/00 ,  H03K5/08 ,  H03K17/74

Abstract: Switching circuitry includes first and second transistors in series between two terminals and including a common control node with a capacitance between the common control node and an intermediate point. A control circuit includes first and second circuits configured to charge and discharge the capacitance as a function of first and second control signals. The control circuit includes a third circuit having a plurality of diodes and a switch that operates when the voltage at the capacitance is greater than a threshold two diodes in cascade between the intermediate point and the common control node to enable current flow from the intermediate point to the common control node. When the voltage at the capacitance is smaller than the given threshold two diodes are connected in series between the common control node and the intermediate point to enable current flow from the common control node to the intermediate point.

公开(公告)号：US20170310320A1

公开(公告)日：2017-10-26

申请号：US15193600

申请日：2016-06-27

Applicant: STMicroelectronics S.R.L.

Inventor： Valeria Bottarel ,  Sandro Rossi

IPC: H03K17/687 ,  A61B8/00 ,  H03K5/08 ,  H03K17/74

CPC classification number: H03K17/687 ,  A61B8/4494 ,  H03K5/08 ,  H03K17/6874 ,  H03K17/74

Abstract: Switching circuitry includes first and second transistors in series between two terminals and including a common control node with a capacitance between the common control node and an intermediate point. A control circuit includes first and second circuits configured to charge and discharge the capacitance as a function of first and second control signals. The control circuit includes a third circuit having a plurality of diodes and a switch that operates when the voltage at the capacitance is greater than a threshold two diodes in cascade between the intermediate point and the common control node to enable current flow from the intermediate point to the common control node. When the voltage at the capacitance is smaller than the given threshold two diodes are connected in series between the common control node and the intermediate point to enable current flow from the common control node to the intermediate point.

公开(公告)号：US09209763B2

公开(公告)日：2015-12-08

申请号：US14052495

申请日：2013-10-11

Applicant: STMicroelectronics S.r.l.

Inventor： Valeria Bottarel ,  Giulio Ricotti ,  Sandro Rossi

IPC: H03F3/45 ,  H02N2/18 ,  H02M1/00

CPC classification number: H03F3/45076 ,  H02M2001/0006 ,  H02N2/181

Abstract: A differentiator generates a time derivative signal from a time-variable signal. A transconductance amplifier generates a biasing control signal as a function of the time derivative signal. A supply network functions to supply the differentiator and transconductance amplifier. The supply network is driven by the biasing control signal output from the transconductance amplifier. With this configuration, speed of operation of the differentiator and transconductance amplifier vary with the supply provided by the supply network, and the supply is modulated as a function of the received time-variable signal.

Abstract translation: 微分器从时间变量信号产生时间导数信号。 跨导放大器产生作为时间导数信号的函数的偏置控制信号。 供电网络用于提供微分器和跨导放大器。 供电网络由跨导放大器输出的偏置控制信号驱动。 利用这种配置，微分器和跨导放大器的操作速度随着供电网络的供给而变化，并且电源根据接收到的时间变量信号进行调制。

公开(公告)号：US11888397B2

公开(公告)日：2024-01-30

申请号：US17531024

申请日：2021-11-19

Applicant: STMicroelectronics S.r.l.

Inventor： Niccolo' Brambilla ,  Sandro Rossi ,  Valeria Bottarel

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0009

Abstract: A DC-DC switching converter includes power switches selectively coupling an output terminal with a first voltage or with a second voltage. A driver stage is coupled with the power switches for driving the power switches. A driver control stage is coupled with the driver stage for controlling the operation of the driver stage. An output current sensing circuit is coupled with the output terminal and with the driver control stage, and is configured to sense a sign of an output current delivered by the DC-DC switching converter at the output terminal and to generate control signals for the driver control stage. The driver control stage controls the operation of the driver stage according to states of the control signals received from the output current sensing circuit, for selectively delaying the activation of the power switches depending on the sensed sign of the output current.

公开(公告)号：US11626880B2

公开(公告)日：2023-04-11

申请号：US17450711

申请日：2021-10-13

Applicant: STMicroelectronics S.r.l.

Inventor： Liliana Arcidiacono ,  Alessandro Nicolosi ,  Valeria Bottarel

IPC: H03K19/17736 ,  H03K19/08

Abstract: A circuit receives an input signal having a first level and a second level. A logic circuit includes a finite state machine circuit, an edge detector circuit, and a timer circuit. The finite state machine circuit is configured to set a mode of operation of the circuit. The edge detector circuit is configured to detect a transition between the first and second level. The timer circuit is configured to determine whether the first or second level is maintained over an interval, which starts from a transition detected by the edge detector circuit. The finite state machine circuit is configured to change the mode of operation based on the timer circuit determining that the first or second level has been maintained over the interval.

公开(公告)号：US20220166321A1

公开(公告)日：2022-05-26

申请号：US17532867

申请日：2021-11-22

Applicant: STMicroelectronics S.r.l.

Inventor： Niccolo' Brambilla ,  Sandro Rossi ,  Valeria Bottarel ,  Alessandro Nicolosi

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00 ,  H03K17/687

Abstract: In an embodiment, a switching converter includes: a switching stage configured to receive a direct current input voltage, receive a driving signal for driving the switching stage, and provide a direct current output voltage according to the input voltage and the driving signal; a driving stage configured to provide the driving signal to the switching stage; a current sensing circuit configure to sense an output current provided by the switching stage; and a voltage generation circuit configured to generate at least one supply voltage for powering the driving stage, and adjust the at least one supply voltage according to the output current.

公开(公告)号：US20220166320A1

公开(公告)日：2022-05-26

申请号：US17532833

申请日：2021-11-22

Applicant: STMicroelectronics S.r.l.

Inventor： Niccolo' Brambilla ,  Sandro Rossi ,  Valeria Bottarel ,  Alessandro Nicolosi

IPC: H02M3/158 ,  H02M1/00

Abstract: In an embodiment, a switching converter includes: a switching stage including first and second switching devices for receiving an input voltage and for providing an output voltage; a driving stage including first and second driving devices for driving the first and second switching devices, respectively; a current sensing arrangement for sensing an output current provided by the switching stage; a voltage generation arrangement configured to generate a supply voltage for powering the driving stage, the voltage generation arrangement being configured to adjust the supply voltage according to the sensed output current; and a charge recovery stage configured to store a first electric charge being lost from the first driving device during driving of the first switching device and to release at least partially the stored first electric charge to the second driving device during driving of the second switching device.