公开(公告)号：US08773198B2

公开(公告)日：2014-07-08

申请号：US13571903

申请日：2012-08-10

申请人： Shiueshr Jiang ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Shiueshr Jiang ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  H03F3/45928 ,  H03F3/45986 ,  H03F2200/261

摘要： An auto-zero amplifier is disclosed, having an amplifying circuit, a switch, and a difference signal generating circuit. The amplifying circuit receives a first input signal for generating a first output signal, and receives a second input signal for generating a second output signal. The switch is coupled between the amplifying circuit and a capacitor. The switch is conducted for charging or discharging the capacitor to a voltage with the first output signal, and the switch is not conducted for keeping the capacitor at the voltage. The difference signal generating circuit is coupled with the amplifying circuit and the capacitor for generating a difference signal of the first output signal and the second output signal, a multiple of the difference signal, a part of the difference signal, and/or a digital output value for the difference signal.

摘要翻译： 公开了一种具有放大电路，开关和差信号发生电路的自动调零放大器。 放大电路接收用于产生第一输出信号的第一输入信号，并接收用于产生第二输出信号的第二输入信号。 开关耦合在放大电路和电容器之间。 开关用于将电容器充电或放电至具有第一输出信号的电压，并且开关不导通以将电容器保持在电压。 差分信号发生电路与放大电路和电容器耦合，用于产生第一输出信号和第二输出信号的差分信号，差信号的一倍，差分信号的一部分和/或数字输出 差信号的值。

公开(公告)号：US20130038388A1

公开(公告)日：2013-02-14

申请号：US13571903

申请日：2012-08-10

申请人： Shiueshr JIANG ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Shiueshr JIANG ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  H03F3/45928 ,  H03F3/45986 ,  H03F2200/261

摘要： An auto-zero amplifier is disclosed, having an amplifying circuit, a switch, and a difference signal generating circuit. The amplifying circuit receives a first input signal for generating a first output signal, and receives a second input signal for generating a second output signal. The switch is coupled between the amplifying circuit and a capacitor. The switch is conducted for charging or discharging the capacitor to a voltage with the first output signal, and the switch is not conducted for keeping the capacitor at the voltage. The difference signal generating circuit is coupled with the amplifying circuit and the capacitor for generating a difference signal of the first output signal and the second output signal, a multiple of the difference signal, a part of the difference signal, and/or a digital output value for the difference signal.

摘要翻译： 公开了一种具有放大电路，开关和差信号发生电路的自动调零放大器。 放大电路接收用于产生第一输出信号的第一输入信号，并接收用于产生第二输出信号的第二输入信号。 开关耦合在放大电路和电容器之间。 开关用于将电容器充电或放电至具有第一输出信号的电压，并且开关不导通以将电容器保持在电压。 差分信号发生电路与放大电路和电容器耦合，用于产生第一输出信号和第二输出信号的差分信号，差信号的一倍，差分信号的一部分和/或数字输出 差信号的值。

公开(公告)号：US08018217B2

公开(公告)日：2011-09-13

申请号：US12461213

申请日：2009-08-05

申请人： An-Tung Chen ,  Jo-Yu Wang

发明人： An-Tung Chen ,  Jo-Yu Wang

IPC分类号： G05F1/00

CPC分类号： H02M3/158

摘要： A ramp generator is provided to provide a multi-slope ramp signal for a PWM power converter. The ramp generator determines the slope turning points for the multi-slope ramp signal according to the error signal of the PWM power converter and thereby improve the transient response of the PWM power converter. Preferably, the slope turning point of the multi-slope ramp signal varies with the average of the error signal and is thus adaptive to the error signal and thereby the load condition.

摘要翻译： 提供斜坡发生器以为PWM功率转换器提供多斜坡斜坡信号。 斜坡发生器根据PWM功率转换器的误差信号确定多斜坡斜坡信号的斜率转折点，从而提高PWM功率转换器的瞬态响应。 优选地，多斜坡斜坡信号的斜率转折点随误差信号的平均值而变化，因此适应于误差信号，从而适应于负载状况。

公开(公告)号：US20120326647A1

公开(公告)日：2012-12-27

申请号：US13232086

申请日：2011-09-14

申请人： Wei-Hsu Chang ,  Pei-Cheng Huang ,  Hao-Yu Chang ,  Yen-Shin Lai ,  Kuo-Chung Lee ,  Jo-Yu Wang ,  Yu-Kuang Wu ,  Chih-Chang Chen ,  Shiue-Shr Jiang ,  Jen-Hung Chi

发明人： Wei-Hsu Chang ,  Pei-Cheng Huang ,  Hao-Yu Chang ,  Yen-Shin Lai ,  Kuo-Chung Lee ,  Jo-Yu Wang ,  Yu-Kuang Wu ,  Chih-Chang Chen ,  Shiue-Shr Jiang ,  Jen-Hung Chi

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： A zero-crossing detection circuit and a commutation device using the zero-crossing detection circuit are provided. The zero-crossing detection circuit is adapted into a three-phase brushless DC (direct current) motor with first to third coils. One terminal of each of the first to third coils is electrically coupled together with each other. The detection circuit comprises a first selection circuit, a second selection circuit and a comparator. The first selection circuit and the second selection circuit are both electrically coupled to another terminals of the first to third coils, to obtain first to third terminal voltages, and output one of the first to third terminal voltages according to a selection signal. The comparator is configured for comparing an output of the first selection circuit and an output of the second selection circuit, to output a comparing result.

摘要翻译： 提供过零检测电路和使用过零检测电路的换向装置。 过零检测电路适用于具有第一至第三线圈的三相无刷直流（直流）电动机。 第一至第三线圈中的每一个的一个端子彼此电耦合。 检测电路包括第一选择电路，第二选择电路和比较器。 第一选择电路和第二选择电路都电耦合到第一至第三线圈的另一个端子，以获得第一至第三端子电压，并根据选择信号输出第一至第三端子电压中的一个。 比较器被配置为比较第一选择电路的输出和第二选择电路的输出，以输出比较结果。

公开(公告)号：US20100033152A1

公开(公告)日：2010-02-11

申请号：US12461213

申请日：2009-08-05

申请人： An-Tung Chen ,  Jo-Yu Wang

发明人： An-Tung Chen ,  Jo-Yu Wang

IPC分类号： G05F1/10

CPC分类号： H02M3/158

摘要： A ramp generator is provided to provide a multi-slope ramp signal for a PWM power converter. The ramp generator determines the slope turning points for the multi-slope ramp signal according to the error signal of the PWM power converter and thereby improve the transient response of the PWM power converter. Preferably, the slope turning point of the multi-slope ramp signal varies with the average of the error signal and is thus adaptive to the error signal and thereby the load condition.

摘要翻译： 提供斜坡发生器以为PWM功率转换器提供多斜坡斜坡信号。 斜坡发生器根据PWM功率转换器的误差信号确定多斜坡斜坡信号的斜率转折点，从而提高PWM功率转换器的瞬态响应。 优选地，多斜坡斜坡信号的斜率转折点随误差信号的平均值而变化，因此适应于误差信号，从而适应于负载状况。

公开(公告)号：US08253407B2

公开(公告)日：2012-08-28

申请号：US12658549

申请日：2010-02-05

申请人： An-Tung Chen ,  Jo-Yu Wang

发明人： An-Tung Chen ,  Jo-Yu Wang

IPC分类号： G05F1/40

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： The present invention discloses a voltage mode switching regulator with improved light load efficiency and mode transition characteristic, and a control circuit and a control method therefor. The switching regulator can switch between a pulse width modulation (PWM) mode and a pulse skipping mode. The control method for the switching regulator comprises: comparing a feedback signal relating to an output voltage with a reference signal, to generate an error amplification signal; generating a duty signal according to the error amplification signal and a ramp signal, to control the switching regulator; setting a threshold level of the error amplification signal and a threshold level of the pulse skipping mode according to the error amplification signal in a stable status; and when the error amplification signal is close or equal to the threshold level of the pulse skipping mode, generating a pulse skip signal to enter the pulse skipping mode.

摘要翻译： 本发明公开了一种具有改善的轻负载效率和模式转换特性的电压模式切换调节器，以及一种控制电路及其控制方法。 开关调节器可以在脉冲宽度调制（PWM）模式和脉冲跳跃模式之间切换。 开关调节器的控制方法包括：将与输出电压相关的反馈信号与参考信号进行比较，以产生误差放大信号; 根据误差放大信号和斜坡信号产生占空比信号，以控制开关调节器; 根据误差放大信号在稳定状态下设置误差放大信号的阈值电平和脉冲跳跃模式的阈值电平; 并且当误差放大信号接近或等于脉冲跳跃模式的阈值电平时，产生脉冲跳跃信号以进入脉冲跳跃模式。

公开(公告)号：US20100301822A1

公开(公告)日：2010-12-02

申请号：US12658571

申请日：2010-02-05

申请人： An-Tung Chen ,  Jo-Yu Wang

发明人： An-Tung Chen ,  Jo-Yu Wang

IPC分类号： G05F1/10

CPC分类号： H02M3/156

摘要： The present invention discloses a switching regulator and control method thereof, and a method for determining On-time in switching regulator. The switching regulator comprises: a power switch circuit including at least one power transistor switch which operates to convert an input voltage to an output voltage; a PWM generation circuit for generating a duty signal in a normal operation mode according to a feedback signal relating to the output voltage; a pulse skipping circuit for determining On-time in a pulse skipping mode according to a node with non-constant voltage level, the node being connected with the power transistor switch; and a driver circuit for driving the at least one power transistor switch according to one of the outputs from the PWM generation circuit and the pulse skipping circuit.

摘要翻译： 本发明公开了一种开关调节器及其控制方法，以及用于确定开关稳压器中导通时间的方法。 开关调节器包括：功率开关电路，包括至少一个功率晶体管开关，其工作以将输入电压转换为输出电压; PWM生成电路，用于根据与输出电压有关的反馈信号，在正常工作模式下产生占空比信号; 脉冲跳跃电路，用于根据具有非恒定电压电平的节点在脉冲跳跃模式中确定导通时间，所述节点与功率晶体管开关连接; 以及用于根据来自PWM生成电路和脉冲跳跃电路的输出之一驱动至少一个功率晶体管开关的驱动器电路。

公开(公告)号：US20100201336A1

公开(公告)日：2010-08-12

申请号：US12658549

申请日：2010-02-05

申请人： An-Tung Chen ,  Jo-Yu Wang

发明人： An-Tung Chen ,  Jo-Yu Wang

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： The present invention discloses a voltage mode switching regulator with improved light load efficiency and mode transition characteristic, and a control circuit and a control method therefor. The switching regulator can switch between a pulse width modulation (PWM) mode and a pulse skipping mode. The control method for the switching regulator comprises: comparing a feedback signal relating to an output voltage with a reference signal, to generate an error amplification signal; generating a duty signal according to the error amplification signal and a ramp signal, to control the switching regulator; setting a threshold level of the error amplification signal and a threshold level of the pulse skipping mode according to the error amplification signal in a stable status; and when the error amplification signal is close or equal to the threshold level of the pulse skipping mode, generating a pulse skip signal to enter the pulse skipping mode.

摘要翻译： 本发明公开了一种具有改善的轻负载效率和模式转换特性的电压模式切换调节器，以及一种控制电路及其控制方法。 开关调节器可以在脉冲宽度调制（PWM）模式和脉冲跳跃模式之间切换。 开关调节器的控制方法包括：将与输出电压相关的反馈信号与参考信号进行比较，以产生误差放大信号; 根据误差放大信号和斜坡信号产生占空比信号，以控制开关调节器; 根据误差放大信号在稳定状态下设置误差放大信号的阈值电平和脉冲跳跃模式的阈值电平; 并且当误差放大信号接近或等于脉冲跳跃模式的阈值电平时，产生脉冲跳跃信号以进入脉冲跳跃模式。

公开(公告)号：US08994315B2

公开(公告)日：2015-03-31

申请号：US13786823

申请日：2013-03-06

申请人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H02P25/06 ,  H02P7/29

CPC分类号： H02P7/29

摘要： The present invention provides a motor controller for controlling a DC motor according to a reference signal. The motor controller includes a compensator, a pulse width modulation unit, and a motor driving unit. The compensator generates a control signal according to the reference signal and a sensing signal from the DC motor. The pulse width modulation unit generates a motor control signal by comparing the control signal and a ramp signal having a varying frequency. The motor driving unit receives the motor control signal and drives the DC motor according to the motor control signal.

摘要翻译： 本发明提供一种用于根据参考信号控制DC电动机的电动机控制器。 马达控制器包括补偿器，脉宽调制单元和马达驱动单元。 补偿器根据参考信号和来自直流电动机的感测信号产生控制信号。 脉冲宽度调制单元通过比较控制信号和具有变化频率的斜坡信号来产生电动机控制信号。 马达驱动单元接收马达控制信号，并根据马达控制信号驱动直流马达。

公开(公告)号：US20140252995A1

公开(公告)日：2014-09-11

申请号：US13786823

申请日：2013-03-06

申请人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H02P25/02

CPC分类号： H02P7/29

摘要： The present invention provides a motor controller for controlling a DC motor according to a reference signal. The motor controller includes a compensator, a pulse width modulation unit, and a motor driving unit. The compensator generates a control signal according to the reference signal and a sensing signal from the DC motor. The pulse width modulation unit generates a motor control signal by comparing the control signal and a ramp signal having a varying frequency. The motor driving unit receives the motor control signal and drives the DC motor according to the motor control signal.

摘要翻译： 本发明提供一种用于根据参考信号控制DC电动机的电动机控制器。 马达控制器包括补偿器，脉宽调制单元和马达驱动单元。 补偿器根据参考信号和来自直流电动机的感测信号产生控制信号。 脉冲宽度调制单元通过比较控制信号和具有变化频率的斜坡信号来产生电动机控制信号。 马达驱动单元接收马达控制信号，并根据马达控制信号驱动直流马达。