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1.发明授权公开(公告)号：US09948188B2
公开(公告)日：2018-04-17
申请号：US14829398
申请日：2015-08-18
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Francesco Ferrazza , Davide Lena , Mirko Gravati , Domenico Tripodi , Massimiliano Leggenda
CPC classification number: H02M3/33507 , H02M3/33523 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A control device for a switching converter having a transformer, with a primary winding receiving an input quantity, a secondary winding providing an output quantity, an auxiliary winding providing a feedback quantity, and a switch element. The control device has a processing module for generating a control signal for switching the switch element on the basis of the feedback quantity in order to regulate the output quantity via alternation of phases of storage and transfer of energy. The processing module controls the end of the transfer phase by comparing the feedback quantity with a comparison threshold. A discrimination circuit generates a signal for discrimination between the presence of a short circuit on the output or the fact that the input quantity is lower than a threshold. The processing module controls the end of the energy-transfer phase also on the basis of the discrimination signal.
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公开(公告)号：US11750010B2
公开(公告)日：2023-09-05
申请号：US17103692
申请日：2020-11-24
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Massimiliano Gobbi , Ignazio Salvatore Bellomo , Domenico Tripodi , Antonio Borrello , Alberto Bianco
IPC: H02J7/34 , G01R19/04 , H02J7/00 , G01R19/165 , H02M1/32
CPC classification number: H02J7/0071 , G01R19/04 , G01R19/16557 , H02J7/345 , H02M1/322
Abstract: A method and apparatus for an active discharge of an X-capacitor are provided. A sensor signal, indicative of a voltage at the capacitor, is compared with a lower and upper threshold values. A first value of a smaller one of the lower and upper threshold values is increased to a first new value that is greater than a second value of a larger one of the lower and upper threshold values in response to a first control signal indicating the sensor signal is greater than the upper and lower threshold values. A third value of the greater one of the lower and upper threshold values is decreased to a second new value that is less than the value of the larger one of the lower and upper threshold values in response to a second control signal indicating the sensor signal is less than the upper and lower threshold values.
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公开(公告)号：US11095291B2
公开(公告)日：2021-08-17
申请号：US17078945
申请日：2020-10-23
Applicant: STMicroelectronics S.r.l.
Inventor： Domenico Tripodi
Abstract: A time measurement includes a multiphase clock generator and a phase sampling circuit. The multiphase clock generator generates a sequence of a given number n of phase shifted clock phases, wherein one of the phase shifted clock phases represents a reference clock signal. The phase sampling circuit is configured to generate a phase value indicative of a number of fractions 1/n of the clock period of the clock phases elapsed between an edge of the reference clock signal and an instant when an asynchronous event signal is set. The phase sampling circuit includes first through fourth sub-circuits, which respectively generate or determine first through fourth control signals.
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4.发明申请CONTROL DEVICE FOR A QUASI-RESONANT SWITCHING CONVERTER, AND CORRESPONDING CONTROL METHOD 有权适用于开关转换器的控制装置及相应的控制方法公开(公告)号：US20160126846A1
公开(公告)日：2016-05-05
申请号：US14829398
申请日：2015-08-18
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Francesco Ferrazza , Davide Lena , Mirko Gravati , Domenico Tripodi , Massimiliano Leggenda
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/33523 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A control device for a switching converter having a transformer, with a primary winding receiving an input quantity, a secondary winding providing an output quantity, an auxiliary winding providing a feedback quantity, and a switch element. The control device has a processing module for generating a control signal for switching the switch element on the basis of the feedback quantity in order to regulate the output quantity via alternation of phases of storage and transfer of energy. The processing module controls the end of the transfer phase by comparing the feedback quantity with a comparison threshold. A discrimination circuit generates a signal for discrimination between the presence of a short circuit on the output or the fact that the input quantity is lower than a threshold. The processing module controls the end of the energy-transfer phase also on the basis of the discrimination signal.
Abstract translation: 一种用于具有变压器的开关转换器的控制装置，其中初级绕组接收输入量，提供输出量的次级绕组，提供反馈量的辅助绕组和开关元件。 控制装置具有处理模块，用于根据反馈量产生用于切换开关元件的控制信号，以通过存储和能量转移的相位的交替来调节输出量。 处理模块通过将反馈量与比较阈值进行比较来控制转移阶段的结束。 识别电路产生用于区分输出上的短路存在或输入量低于阈值的事实的信号。 处理模块也基于鉴别信号控制能量转移阶段的结束。
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公开(公告)号：US12216488B2
公开(公告)日：2025-02-04
申请号：US17507545
申请日：2021-10-21
Applicant: STMicroelectronics S.r.l.
Inventor： Domenico Tripodi
Abstract: A system including an asynchronous finite state machine that transitions from a first state to a second state in response to receiving a virtual-clock event signal. The system further includes a trigger circuit that asserts a trigger signal when a first-state asynchronous event signal is asserted while the asynchronous finite state machine is in the first state. The system further including a virtual clock-pulse circuit configured to generate the virtual-clock event signal after receiving the trigger signal.
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Patent Agency Ranking
公开(公告)号：US10890606B2
公开(公告)日：2021-01-12
申请号：US16443439
申请日：2019-06-17
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Massimiliano Gobbi , Ignazio Salvatore Bellomo , Domenico Tripodi , Antonio Borrello , Alberto Bianco
IPC: G01R19/04 , G01R19/165 , H02J7/00 , H02J7/34 , H02M1/32
Abstract: An active discharge circuit discharges an X capacitor and includes a sensor circuit that generates a sensor signal indicative of an AC voltage at the X capacitor. A processing unit generates a reset signal as a function of a comparison signal. A comparator circuit generates the comparison signal by comparing the sensor signal with a threshold. A timer circuit sets a discharge enable signal to a first logic level when the timer circuit is reset via a reset signal. The timer circuit determines the time elapsed since the last reset and tests whether the time elapsed exceeds a given timeout value. If the time elapsed exceeds the given timeout value, the timer circuit sets the discharge enable signal to a second logic level. A dynamic threshold generator circuit varies the threshold of the comparator circuit as a function of the sensor signal.
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7.发明授权公开(公告)号：US09329209B1
公开(公告)日：2016-05-03
申请号：US14510925
申请日：2014-10-09
Applicant: STMicroelectronics S.r.l.
Inventor： Mirko Gravati , Domenico Tripodi
CPC classification number: G01R19/04
Abstract: A peak detector circuit receives an oscillating power supply signal. A capacitor is selectably coupled to the signal and charged to a value corresponding to a peak value of the signal. A switch is then opened to isolate the capacitor. When the signal rises to within a selected threshold, relative to the stored value, a comparator produces a command signal to close the switch, again coupling the capacitor to the signal. The peak detector can also include a tracking circuit that controls the capacitor to track the oscillating signal while the switch is closed, a timer circuit that closes the switch and activates the tracking circuit if more than a selected time passes without production of a command signal, a circuit that controls the polarity of a leakage current of the capacitor, a further auxiliary capacitor and a further auxiliary switch with a further control logic.
Abstract translation: 峰值检测器电路接收振荡电源信号。 电容器可选地耦合到信号并充电到与信号的峰值对应的值。 然后打开开关以隔离电容器。 当信号上升到所选择的阈值内时，相对于存储值，比较器产生一个命令信号来闭合开关，再次将电容器耦合到信号上。 峰值检测器还可以包括跟踪电路，该跟踪电路控制电容器在开关闭合时跟踪振荡信号;定时器电路关闭开关并激活跟踪电路，如果超过所选时间经过而不产生指令信号， 控制电容器的漏电流的极性的电路，另外的辅助电容器和具有另外的控制逻辑的另外的辅助开关。
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8.发明授权公开(公告)号：US12009743B2
公开(公告)日：2024-06-11
申请号：US17695603
申请日：2022-03-15
Applicant: STMicroelectronics S.r.l.
Inventor： Christian Leone Santoro , Domenico Tripodi
CPC classification number: H02M1/36 , H02M1/0006 , H02M1/0025 , H02M1/32 , H02M3/33523
Abstract: A method of operating an electronic converter is provided in which a switching activity of a switching stage of the electronic converter is active or inactive based on a control signal, and the method includes operating the electronic converter, alternatively, in a first or a second mode. In the first mode, the status signal is initially asserted and is de-asserted in response to an amplitude of the input sensing signal failing to reach a first reference threshold value. In the second mode, the status signal is initially de-asserted and an auxiliary power supply signal is periodically varied with a variation period. After a time interval equal to the variation period, a comparison signal is asserted in response to an amplitude of the sensed signal reaching a second reference threshold value. The status signal is asserted based on conditions of the comparison signal and the periodically varying auxiliary power supply signal.
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公开(公告)号：US11606083B2
公开(公告)日：2023-03-14
申请号：US17515069
申请日：2021-10-29
Applicant: STMicroelectronics S.r.l.
Inventor： Domenico Tripodi , Luca Giussani , Simone Ludwig Dalla Stella
Abstract: A PWM signal generator circuit includes a multiphase clock generator that generates a number n of phase-shifted clock phases having the same clock period and being phase shifted by a time corresponding to a fraction 1/n of the clock period. The PWM signal generator circuit determines for each switch-on duration first and second integer numbers, and for each switch-off duration third and fourth integer numbers. The first integer number is indicative of the integer number of clock periods of the switch-on duration and the second integer number is indicative of the integer number of the additional fractions 1/n of the clock period of the switch-on duration. The third integer number is indicative of the integer number of clock periods of the switch-off duration, and the fourth integer number is indicative of the integer number of the additional fractions 1/n of the clock period of the switch-off duration.
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公开(公告)号：US20210080491A1
公开(公告)日：2021-03-18
申请号：US17103692
申请日：2020-11-24
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Massimiliano Gobbi , Ignazio Salvatore Bellomo , Domenico Tripodi , Antonio Borrello , Alberto Bianco
IPC: G01R19/165 , G01R19/04
Abstract: An active discharge circuit discharges an X capacitor and includes a sensor circuit that generates a sensor signal indicative of an AC voltage at the X capacitor. A processing unit generates a reset signal as a function of a comparison signal. A comparator circuit generates the comparison signal by comparing the sensor signal with a threshold. A timer circuit sets a discharge enable signal to a first logic level when the timer circuit is reset via a reset signal. The timer circuit determines the time elapsed since the last reset and tests whether the time elapsed exceeds a given timeout value. If the time elapsed exceeds the given timeout value, the timer circuit sets the discharge enable signal to a second logic level. A dynamic threshold generator circuit varies the threshold of the comparator circuit as a function of the sensor signal.
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