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公开(公告)号：US09240728B2
公开(公告)日：2016-01-19
申请号：US14459159
申请日：2014-08-13
Applicant: DORA S.p.A.
Inventor： Alberto Iorio , Maurizio Foresta , Alberto Bianco
CPC classification number: H02M3/33576 , H02M3/1588 , H02M3/33592 , H02M2001/0058 , Y02B70/1425 , Y02B70/1433 , Y02B70/1466 , Y02B70/1475 , Y02B70/1491
Abstract: A control device detects zero crossings of a current through a rectifier transistor during plural cycles; generates a turn-on signal of the transistor and inserts a turn-on delay equal to a fixed first quantity from the start time of for each cycle. The control device starts counting consecutive cycles after inserting the turn-on delay; detects whether a zero crossing of the current through the transistor after turning on said transistor has occurred; if no zero crossing is detected before counting a number N of consecutive cycles, decreases the turn-on delay by a fixed second quantity for the next cycle; if a zero crossing is detected, maintains turned on the transistor; if the turn-on delay is smaller than first quantity, increases the turn-on delay o for the next switching cycle; and if the turn-on delay is equal to the first quantity, maintains the turn-on delay for the next switching cycle.
Abstract translation: 控制装置在多个周期期间检测通过整流器晶体管的电流的过零点; 产生晶体管的导通信号，并从每个周期的开始时间插入等于固定的第一量的导通延迟。 控制装置在插入接通延迟后开始连续循环计数; 检测在导通所述晶体管之后是否发生通过所述晶体管的电流的过零点; 如果在对连续循环数N进行计数之前没有检测到零交叉，则在下一个周期将导通延迟减少固定的第二数量; 如果检测到零交叉，维持导通晶体管; 如果导通延迟小于第一量，则增加下一个开关周期的导通延迟o; 并且如果导通延迟等于第一数量，则维持下一个开关周期的导通延迟。
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12.发明申请CONTROL CIRCUIT WITH HYSTERESIS FOR A SWITCHING VOLTAGE REGULATOR AND RELATED CONTROL METHOD 有权用于切换电压调节器的HYSTERESIS的控制电路和相关控制方法公开(公告)号：US20130285634A1
公开(公告)日：2013-10-31
申请号：US13871809
申请日：2013-04-26
Applicant: DORA S.P.A.
Inventor： Alberto Bianco
IPC: H02M3/157
CPC classification number: H02M3/158 , H02M1/08 , H02M3/1563 , H02M3/157 , H02M2001/0025
Abstract: A control circuit for a switching voltage regulator is configured to receive an error signal representative of a regulator output voltage in relation to a nominal output voltage, and includes a set/reset flip-flop, a hysteresis comparator and a logic circuit. The flip-flop is configured to produce a switching control signal according to logic values at its set and reset terminals. The comparator is configured to produce a set signal at the set terminal when an error signal drops below a first value, and a reset signal when the error signal rises above a second value. The logic circuit is configured to prevent transmission of the reset signal to the reset terminal during a selected minimum time period and to thereafter enable transmission of the reset signal, and further, to produce an alternate reset signal at the reset terminal at the end of the selected maximum time period.
Abstract translation: 用于开关稳压器的控制电路被配置为接收代表与额定输出电压相关的调节器输出电压的误差信号，并且包括设置/复位触发器，迟滞比较器和逻辑电路。 触发器被配置为根据其设置和复位端子处的逻辑值产生开关控制信号。 比较器被配置为当误差信号低于第一值时在设定端产生设置信号，当误差信号上升到第二值以上时，产生复位信号。 逻辑电路被配置为在所选择的最小时间段期间防止复位信号传输到复位端，并且此后能够传输复位信号，并且进一步在复位端产生替代复位信号 选定的最大时间段。
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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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Patent Agency Ranking
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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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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