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    CONVERTER AND METHOD FOR EXTRACTING MAXIMUM POWER FROM PIEZO VIBRATION HARVESTER
    2.
    发明申请
    CONVERTER AND METHOD FOR EXTRACTING MAXIMUM POWER FROM PIEZO VIBRATION HARVESTER 审中-公开
    从PIEZO振动捕获器提取最大功率的转换器和方法

    公开(公告)号：US20160049805A1

    公开(公告)日：2016-02-18

    申请号：US14828332

    申请日：2015-08-17

    申请人： Texas Instruments Incorporated

    发明人： Vadim V. Ivanov

    IPC分类号： H02J7/00 ,  H02N2/18

    CPC分类号： H02J7/007 ,  H02J7/04 ,  H02M7/219 ,  H02M2001/007 ,  H02M2007/2195 ,  H02N2/181 ,  Y02B70/1408

    摘要： A system (1-2) for efficiently transferring harvested vibration energy to a battery (6) includes a piezo harvester (2) generating an AC output voltage (VP(t)) and current (IPZ(t)) and an active rectifier (3) to produce a harvested DC voltage (Vhrv) and current (Ihrv) which charge a capacitance (C0). An enable circuit (17) causes a DC-DC converter (4) to be enabled, thereby discharging the capacitance into the converter, when a comparator (A0,A1) of the rectifier which controls switches (S1-S4) thereof detects a direction reversal of the AC output current (IPZ(t)). Another comparator (13) causes the enable circuit (17) to disable the converter (4) when the DC voltage exceeds a threshold (VREF), thereby causing the capacitance be recharged.

    摘要翻译： 用于将收获的振动能量有效地传送到电池（6）的系统（1-2）包括产生AC输出电压（VP（t））和电流（IPZ（t））的压电式收集器（2）和有源整流器 3）以产生对电容（C0）充电的收获的DC电压（Vhrv）和电流（Ihrv）。 当控制开关（S1-S4）的整流器的比较器（A0，A1）检测到方向（S1-S4）时，使能电路（17）使DC-DC转换器（4）使能，从而将电容放电到转换器中 交流输出电流（IPZ（t））的反转。 当DC电压超过阈值（VREF）时，另一比较器（13）使得使能电路（17）禁用转换器（4），从而使电容被再充电。

    Buck-boost converter with buck-boost transition switching control
    3.
    发明授权
    Buck-boost converter with buck-boost transition switching control 有权
    降压 - 升压转换器具有降压 - 升压转换开关控制

    公开(公告)号：US09088211B2

    公开(公告)日：2015-07-21

    申请号：US14177558

    申请日：2014-02-11

    申请人： Texas Instruments Incorporated

    发明人： Vadim V. Ivanov ,  Rahul Prakash

    IPC分类号： G05F1/00 ,  H02M3/158

    CPC分类号： H02M3/1582

    摘要： A buck-boost regulation methodology operable, in one embodiment, with a single inductor, four-switch (S1-S4) buck-boost regulator configured for DCM. Buck-boost transition switching control is operable when inductor charge time exceeds a max charge time, and inductor discharge time exceeds a max discharge time, and includes: (a) during charge transition cycles, at the end of the max charge time, if IL is less than a predetermined peak current IL—MAX, switching S2 on (grounding the output side of the inductor) and S4 off, causing IL to increase (a rapid S1S2 charging current ramp), until IL reaches IL—MAX, and (b) during discharge transition cycles, at the end of the max charge time, if IL is greater than zero, switching S1 off and S3 on (grounding the input side of the inductor), causing IL to increase (a rapid S3S4 IL discharging current ramp), until IL reaches zero.

    摘要翻译： 在一个实施例中，降压 - 升压调节方法可用于配置用于DCM的单电感器，四开关（S1-S4）降压 - 升压调节器。 当电感充电时间超过最大充电时间，电感放电时间超过最大放电时间时，降压 - 升压转换开关控制可操作，包括：（a）在充电转换周期期间，在最大充电时间结束时，如果IL 小于预定的峰值电流IL-MAX，开关S2（电感器的输出侧接地）和S4关闭，导致IL增加（快速S1S2充电电流斜坡），直到IL达到IL-MAX，并且（b ）在放电过渡周期中，在最大充电时间结束时，如果IL大于零，则关断S1和S3（接地电感的输入端），导致IL增加（快速S3S4 IL放电电流斜坡 ），直到IL达到零。

    BUCK-BOOST CONVERTER WITH BUCK-BOOST TRANSITION SWITCHING CONTROL
    4.
    发明申请
    BUCK-BOOST CONVERTER WITH BUCK-BOOST TRANSITION SWITCHING CONTROL 有权
    BUCK-BOOST转换器与BUCK-BOOST过渡切换控制

    公开(公告)号：US20140225577A1

    公开(公告)日：2014-08-14

    申请号：US14177558

    申请日：2014-02-11

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Vadim V. Ivanov ,  Rahul Prakash

    IPC分类号： H02M3/158

    CPC分类号： H02M3/1582

    摘要： A buck-boost regulation methodology operable, in one embodiment, with a single inductor, four-switch (S1-S4) buck-boost regulator configured for DCM. Buck-boost transition switching control is operable when inductor charge time exceeds a max charge time, and inductor discharge time exceeds a max discharge time, and includes: (a) during charge transition cycles, at the end of the max charge time, if IL is less than a predetermined peak current IL—MAX, switching S2 on (grounding the output side of the inductor) and S4 off, causing IL to increase (a rapid S1S2 charging current ramp), until IL reaches IL—MAX, and (b) during discharge transition cycles, at the end of the max charge time, if IL is greater than zero, switching S1 off and S3 on (grounding the input side of the inductor), causing IL to increase (a rapid S3S4 IL discharging current ramp), until IL reaches zero.

    摘要翻译： 在一个实施例中，降压 - 升压调节方法可用于配置用于DCM的单电感器，四开关（S1-S4）降压 - 升压调节器。 当电感充电时间超过最大充电时间，电感放电时间超过最大放电时间时，降压 - 升压转换开关控制可操作，包括：（a）在充电转换周期期间，在最大充电时间结束时，如果IL 小于预定的峰值电流IL-MAX，开关S2（电感器的输出侧接地）和S4关闭，导致IL增加（快速S1S2充电电流斜坡），直到IL达到IL-MAX，并且（b ）在放电过渡周期中，在最大充电时间结束时，如果IL大于零，则关断S1和S3（接地电感器的输入端），导致IL增加（快速S3S4 IL放电电流斜坡 ），直到IL达到零。

    Resonant line driver including energy transfer inductor for driving capacitive-load lines
    5.
    发明授权
    Resonant line driver including energy transfer inductor for driving capacitive-load lines 有权

    公开(公告)号：US10521041B2

    公开(公告)日：2019-12-31

    申请号：US14825942

    申请日：2015-08-13

    申请人： Texas Instruments Incorporated

    发明人： Vadim V. Ivanov ,  William R. Krenik ,  Rajarshi Mukhopadhyay ,  Baher S. Haroun

    IPC分类号： G06F3/041 ,  G06F3/044

    摘要： A resonant line driver for driving capacitive-loads includes a driver series-coupled to an energy transfer inductor L1, driving signal energy at a signal frequency through L1. A switch array is controlled to switch L1 between multiple electrodes according to a switching sequence, each electrode characterized by a load capacitance CL. L1 and CL form a resonator circuit in which signal energy cycles between L1 and CL at the signal frequency. The switch array switches L1 between a current electrode and a next electrode at a zero_crossing when signal energy in the energy transfer inductor is at a maximum and signal energy in the load capacitance of the current electrode is at a minimum. An amplitude control loop controls signal energy delivered to the L1CL resonator circuit, and a frequency control loop controls signal frequency/phase. In an example application, the resonant driver provides line drive for a mutual capacitance touch screen.

    Nonlinear class AB input stage
    7.
    发明授权
    Nonlinear class AB input stage 有权
    非线性AB类输入级

    公开(公告)号：US09577589B2

    公开(公告)日：2017-02-21

    申请号：US14619860

    申请日：2015-02-11

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Vadim V. Ivanov ,  Ravinthiran Balasingam

    IPC分类号： H03F3/45 ,  H03F1/34 ,  H03F3/21 ,  H03F1/08 ,  H03G1/00

    CPC分类号： H03G3/30 ,  H03F1/086 ,  H03F1/34 ,  H03F3/21 ,  H03F3/45183 ,  H03F3/45273 ,  H03F3/45475 ,  H03F2200/123 ,  H03F2200/129 ,  H03F2200/153 ,  H03F2203/45116 ,  H03F2203/45264 ,  H03G1/0035

    摘要： A circuit includes a differential input stage amplifier that receives a differential input voltage and generates an output voltage based on a difference in the differential input voltage. A feedback loop provides feedback from an output of the differential input stage amplifier to input tail current of the differential input stage amplifier. The feedback loop enables class AB operation of the differential input stage amplifier. At least one gain reducer is operatively coupled to the feedback loop to reduce the gain of the feedback loop. The gain reducer has a resistance value that varies inversely proportional to loop current in the feedback loop to reduce the gain of the feedback loop as loop current increases.

    摘要翻译： 电路包括差分输入级放大器，其接收差分输入电压并且基于差分输入电压的差产生输出电压。 反馈环路提供来自差分输入级放大器的输出的反馈以输入差分输入级放大器的尾部电流。 反馈环路使得差分输入级放大器的AB类工作成为可能。 至少一个增益减小器可操作地耦合到反馈回路以减小反馈回路的增益。 增益减小器具有与反馈环路中的回路电流成反比的电阻值，以在环路电流增加时降低反馈回路的增益。

    Chopped operational-amplifier (OP-AMP) system
    8.
    发明授权
    Chopped operational-amplifier (OP-AMP) system 有权
    斩波运算放大器（OP-AMP）系统

    公开(公告)号：US09564859B2

    公开(公告)日：2017-02-07

    申请号：US14621110

    申请日：2015-02-12

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Vadim V. Ivanov ,  Vaibhav Kumar ,  Munaf H. Shaik

    IPC分类号： H03F1/26 ,  H03F3/387 ,  H03F3/45 ,  H03F3/00

    CPC分类号： H03F1/26 ,  H03F3/005 ,  H03F3/387 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/249 ,  H03F2200/372 ,  H03F2200/375 ,  H03F2203/45118 ,  H03F2203/45138 ,  H03F2203/45512

    摘要： One example includes an OP-AMP circuit system. The system includes a signal amplification path comprising a signal amplification path comprising a signal amplifier and an output stage. The signal amplification path can be configured to amplify an input voltage received at an input to provide an output voltage via the output stage. The system also includes an offset-reduction path coupled to the input of the signal amplification path and to an output of the signal amplifier. The offset-reduction path includes a transconductance amplifier and at least one chopper that are configured to mitigate noise in the signal amplification path and a noise-filtering feedback path configured to provide chopper feedback with respect to an offset voltage associated with the offset-reduction path, the noise-filtering feedback path comprising a feedback path input coupled to the input of the transconductance amplifier via a resistor.

    摘要翻译： 一个例子包括OP-AMP电路系统。 该系统包括信号放大路径，其包括信号放大路径，该信号放大路径包括信号放大器和输出级。 信号放大路径可以被配置为放大在输入处接收的输入电压以经由输出级提供输出电压。 该系统还包括耦合到信号放大路径的输入和信号放大器的输出的偏移减小路径。 偏移减小路径包括跨导放大器和被配置为减轻信号放大路径中的噪声的至少一个斩波器以及被配置为提供关于与偏移减小路径相关联的偏移电压的斩波反馈的噪声滤波反馈路径 噪声滤波反馈路径包括经由电阻器耦合到跨导放大器的输入的反馈路径输入。

    RESONANT LINE DRIVER INCLUDING ENERGY TRANSFER INDUCTOR FOR DRIVING CAPACITIVE-LOAD LINES
    9.
    发明申请
    RESONANT LINE DRIVER INCLUDING ENERGY TRANSFER INDUCTOR FOR DRIVING CAPACITIVE-LOAD LINES 审中-公开
    谐振线路驱动器，包括用于驱动电容负载线的能量转移电感器

    公开(公告)号：US20160048260A1

    公开(公告)日：2016-02-18

    申请号：US14825942

    申请日：2015-08-13

    申请人： Texas Instruments Incorporated

    发明人： Vadim V. Ivanov ,  William R. Krenik ,  Rajarshi Mukhopadhyay ,  Baher S. Haroun

    IPC分类号： G06F3/041 ,  G06F3/044 ,  H03K3/012

    CPC分类号： G06F3/0416 ,  G06F3/044

    摘要： A resonant line driver for driving capacitive-loads includes a driver series-coupled to an energy transfer inductor L1, driving signal energy at a signal frequency through L1. A switch array is controlled to switch L1 between multiple electrodes according to a switching sequence, each electrode characterized by a load capacitance CL. L1 and CL form a resonator circuit in which signal energy cycles between L1 and CL at the signal frequency. The switch array switches L1 between a current electrode and a next electrode at a zero_crossing when signal energy in the energy transfer inductor is at a maximum and signal energy in the load capacitance of the current electrode is at a minimum. An amplitude control loop controls signal energy delivered to the L1CL resonator circuit, and a frequency control loop controls signal frequency/phase. In an example application, the resonant driver provides line drive for a mutual capacitance touch screen.

    摘要翻译： 用于驱动电容性负载的谐振线路驱动器包括串联耦合到能量传递电感器L1的驱动器，通过L1驱动信号频率的信号能量。 控制开关阵列以根据切换顺序在多个电极之间切换L1，每个电极的特征在于负载电容CL。 L1和CL形成谐振器电路，其中信号能量在信号频率下在L1和CL之间循环。 当能量传递电感器中的信号能量处于最大值并且当前电极的负载电容中的信号能量处于最小时，开关阵列在零交叉时在当前电极和下一个电极之间切换L1。 幅度控制环路控制传送到L1CL谐振电路的信号能量，并且频率控制环路控制信号频率/相位。 在示例应用中，谐振驱动器为互电容触摸屏提供线驱动。

    CONVERTER AND METHOD FOR EXTRACTING MAXIMUM POWER FROM PIEZO VIBRATION HARVESTER
    10.
    发明申请
    CONVERTER AND METHOD FOR EXTRACTING MAXIMUM POWER FROM PIEZO VIBRATION HARVESTER 审中-公开
    从PIEZO振动捕获器提取最大功率的转换器和方法

    公开(公告)号：US20140191730A1

    公开(公告)日：2014-07-10

    申请号：US14163861

    申请日：2014-01-24

    申请人： Texas Instruments Incorporated

    发明人： Vadim V. Ivanov

    IPC分类号： H02J7/04

    CPC分类号： H02J7/007 ,  H02J7/04 ,  H02M7/219 ,  H02M2001/007 ,  H02M2007/2195 ,  H02N2/181 ,  Y02B70/1408

    摘要： A system (1-2) for efficiently transferring harvested vibration energy to a battery (6) includes a piezo harvester (2) generating an AC output voltage (VP(t)) and current (IPZ(t)) and an active rectifier (3) to produce a harvested DC voltage (Vhrv) and current (Ihrv) which charge a capacitance (C0). An enable circuit (17) causes a DC-DC converter (4) to be enabled, thereby discharging the capacitance into the converter, when a comparator (A0,A1) of the rectifier which controls switches (S1-S4) thereof detects a direction reversal of the AC output current (IPZ(t)). Another comparator (13) causes the enable circuit (17) to disable the converter (4) when the DC voltage exceeds a threshold (VREF), thereby causing the capacitance be recharged.

    摘要翻译： 用于将收获的振动能量有效地传送到电池（6）的系统（1-2）包括产生AC输出电压（VP（t））和电流（IPZ（t））的压电式收集器（2）和有源整流器 3）以产生对电容（C0）充电的收获的DC电压（Vhrv）和电流（Ihrv）。 当控制开关（S1-S4）的整流器的比较器（A0，A1）检测到方向（S1-S4）时，使能电路（17）使DC-DC转换器（4）使能，从而将电容放电到转换器中 交流输出电流（IPZ（t））的反转。 当DC电压超过阈值（VREF）时，另一比较器（13）使得使能电路（17）禁用转换器（4），从而使电容被再充电。