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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：US10715046B2
公开(公告)日：2020-07-14
申请号：US16239386
申请日：2019-01-03
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Bianco , Giuseppe Scappatura
Abstract: A method and apparatus for secondary side current mode control of a converter are provided. In the method and apparatus, an output voltage of the converter is detected, where the converter has primary and secondary windings that are galvanically isolated in respective primary and secondary sides. A secondary control signal is generated in the secondary side based at least in part on the output voltage and a reference voltage. The secondary control signal is converted to a primary control signal provided in the primary side. The converter is driven in the primary side based at least in part on the primary control signal and a current sense signal indicative of a current flowing through the primary winding.
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公开(公告)号：US10468990B2
公开(公告)日：2019-11-05
申请号：US16129377
申请日：2018-09-12
Applicant: STMicroelectronics S.r.l.
Inventor： Gabriele Gherdovich , Alberto Bianco , Giuseppe Scappatura
Abstract: A controller circuit for an AC-DC converter includes a first controller circuit block configured to drive one or more switches at the primary side of a transformer in the AC-DC converter. A second controller circuit block is configured to sense, at a secondary side of the transformer in said AC-DC converter, a secondary side signal indicative of the output signal from said AC-DC converter. The second controller circuit block generates switching control signals for the first controller circuit block as a function of the secondary side signal. An isolator circuit block between the first controller circuit block and the second controller circuit block includes an isolated transmission channel of the switching control signals from the second controller circuit block to the first controller circuit block.
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公开(公告)号：US20190140544A1
公开(公告)日：2019-05-09
申请号：US16239386
申请日：2019-01-03
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Bianco , Giuseppe Scappatura
CPC classification number: H02M3/3353 , H02M3/3155 , H02M3/33507 , H02M3/33538 , H02M3/33576 , H02M2001/0003 , H02M2001/0009 , H02M2001/0025
Abstract: A method and apparatus for secondary side current mode control of a converter are provided. In the method and apparatus, an output voltage of the converter is detected, where the converter has primary and secondary windings that are galvanically isolated in respective primary and secondary sides. A secondary control signal is generated in the secondary side based at least in part on the output voltage and a reference voltage. The secondary control signal is converted to a primary control signal provided in the primary side. The converter is driven in the primary side based at least in part on the primary control signal and a current sense signal indicative of a current flowing through the primary winding.
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公开(公告)号：US09722494B2
公开(公告)日：2017-08-01
申请号：US14700659
申请日：2015-04-30
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura
CPC classification number: H02M1/4225 , H02M1/083 , H02M1/088 , H02M3/1584 , H02M3/285 , H02M2001/0058 , Y02B70/126
Abstract: A controller for a multiphase converter comprises a first stage controller for producing a first gate drive signal to turn on a first power transistor of a first boost converter; a delay element configured to produce a delayed signal by delaying the first gate drive signal by half a cycle length; a time difference detection element configured to: output a turn on command based on a zero crossing detection (ZCD) signal indicating that one or more zero current conditions of a second boost converter of the multiphase converter are met and the delayed signal; and a second stage controller configured to assert a second gate drive signal to turn on a second power transistor of the second boost converter based on the turn on command.
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Patent Agency Ranking
公开(公告)号：US09461558B2
公开(公告)日：2016-10-04
申请号：US13749533
申请日：2013-01-24
Applicant: DORA S.p.A. , STMicroelectronics S.r.l.
Inventor： Alberto Bianco , Claudio Adragna
CPC classification number: H02M7/217 , H02M1/4225 , Y02B70/126
Abstract: A control device of a switching converter controls the closing and opening of a switch of the converter that regulates the operation of an inductor. The control device includes a ramp voltage generator, a switch control circuit configured to close the switch based on a comparison of the ramp voltage with a first signal and a generator control circuit configured to control the ramp voltage generator based on a value of a second signal representative of a current flowing through the inductor of the converter, in comparison with the value of a third signal.
Abstract translation: 开关转换器的控制装置控制调节电感器操作的转换器的开关的闭合和断开。 控制装置包括斜坡电压发生器，开关控制电路，其被配置为基于斜坡电压与第一信号的比较来闭合开关，以及发电机控制电路，其被配置为基于第二信号的值来控制斜坡电压发生器 代表流过转换器的电感器的电流，与第三信号的值相比较。
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公开(公告)号：US11018578B1
公开(公告)日：2021-05-25
申请号：US16671002
申请日：2019-10-31
Applicant: STMicroelectronics S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura , Francesco Ciappa
Abstract: An electronic device includes a circuit board that manages supply of electricity to the electronic device. The circuit board includes an integrated circuit and an external capacitor coupled to a supply terminal of the circuit board. During a startup operation of the integrated circuit, the integrated circuit supplies a first charging current to charge the capacitor to a supply voltage value. The circuit board includes a boost circuit that receives a portion of the first charging current and outputs a second charging current that augments charging of the capacitor. The second charging current is an amplification of the first charging current. The integrated circuit enables operation of the electronic device after the capacitor is charged to the supply voltage value.
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公开(公告)号：US20210135568A1
公开(公告)日：2021-05-06
申请号：US16671002
申请日：2019-10-31
Applicant: STMicroelectronics S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura , Francesco Ciappa
Abstract: An electronic device includes a circuit board that manages supply of electricity to the electronic device. The circuit board includes an integrated circuit and an external capacitor coupled to a supply terminal of the circuit board. During a startup operation of the integrated circuit, the integrated circuit supplies a first charging current to charge the capacitor to a supply voltage value. The circuit board includes a boost circuit that receives a portion of the first charging current and outputs a second charging current that augments charging of the capacitor. The second charging current is an amplification of the first charging current. The integrated circuit enables operation of the electronic device after the capacitor is charged to the supply voltage value.
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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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公开(公告)号：US20170207695A1
公开(公告)日：2017-07-20
申请号：US15476698
申请日：2017-03-31
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura
CPC classification number: H02M1/42 , H02J7/0052 , H02J2007/0059 , H02M1/083 , H02M1/36 , H02M1/4208 , H02M1/4225 , H02M1/44 , H02M3/04 , H02M7/04 , H02M2001/0009 , H02M2001/0058 , H05B33/0809 , H05B33/0815 , Y02B70/126 , Y02B70/1491
Abstract: A control device for a converter of the switched-mode type provided with an inductor element and a switch element generates a driving signal for controlling switching of the switch element and determining alternately a phase of storage of energy in the inductor element as a function of an input quantity and a phase of transfer of the energy stored in the inductor element to an output element on which an output quantity is present; the control device generates the driving signal by means of a control based on the value of the output quantity in order to regulate the same output quantity. In particular, an estimation block determines an estimated value of the output quantity, and a driving block generates the driving signal as a function of said estimated value.
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