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公开(公告)号：US10425012B2
公开(公告)日：2019-09-24
申请号：US15605322
申请日：2017-05-25
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Bianco , Francesco Ciappa , Giuseppe Scappatura
Abstract: A method and apparatus for controlling a power converter are provided. In the method and apparatus, switching from a first phase to a second phase is delayed until it is determined that both a tank current signal of the converter goes below a tank current threshold and the converter has been in the first phase for more than a first minimum time period. Then the converter determines if a resonant capacitor voltage has fallen below a first resonant capacitance voltage threshold and if a tank current signal goes above a tank current threshold. The converter switches from the first phase to the second phase in response to determining at least one of: the resonant capacitor voltage has fallen below the first resonant capacitance voltage threshold and the tank current signal goes above the tank current threshold. The converter is additionally operated in third and fourth states.
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公开(公告)号：US10389223B1
公开(公告)日：2019-08-20
申请号：US16230013
申请日：2018-12-21
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Bianco , Claudio Adragna
Abstract: A method and controller for controlling a converter are provided. The converter is operated in a first phase in which controller logic asserts a first gate drive signal to cause a first transistor of the converter to be conductive and deasserts a second gate drive signal to cause a second transistor of the converter to be non-conductive. In a first deadtime phase and a second phase, the controller logic deasserts both the first and second gate drive signals to cause leakage energy from a leakage inductance of a primary winding of the converter to be transferred to a clamp capacitance of the converter. After the leakage energy is transferred, the converter is operated in a third phase in which the logic asserts the second gate drive signal and deasserts the first gate drive signal.
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Patent Agency Ranking
公开(公告)号：US10345348B2
公开(公告)日：2019-07-09
申请号：US14838125
申请日：2015-08-27
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Massimiliano Gobbi , Ignazio Salvatore Bellomo , Domenico Tripodi , Antonio Borrello , Alberto Bianco
IPC: H02J7/00 , G01R19/165 , G01R19/04 , H02M1/32 , H02J7/34
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：US09954434B2
公开(公告)日：2018-04-24
申请号：US15633373
申请日：2017-06-26
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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公开(公告)号：US09871438B2
公开(公告)日：2018-01-16
申请号：US15476698
申请日：2017-03-31
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura
IPC: H02M3/156 , H02M1/42 , H02M1/36 , H02M1/08 , H05B33/08 , H02J7/00 , H02M1/44 , H02M7/04 , H02M3/04 , G05F1/70 , H02M1/00
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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公开(公告)号：US09647532B2
公开(公告)日：2017-05-09
申请号：US14868104
申请日：2015-09-28
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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公开(公告)号：US20160322898A1
公开(公告)日：2016-11-03
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.
Abstract translation: 一种用于多相转换器的控制器包括：第一级控制器，用于产生第一栅极驱动信号以接通第一升压转换器的第一功率晶体管; 延迟元件，被配置为通过将第一栅极驱动信号延迟半个周期长度来产生延迟信号; 时间差检测元件，被配置为：基于表示所述多相转换器的第二升压转换器的一个或多个零电流条件和所述延迟信号的过零检测（ZCD）信号输出导通命令; 以及第二级控制器，被配置为基于所述打开命令来断言第二栅极驱动信号以接通所述第二升压转换器的第二功率晶体管。
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