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：US08687331B2

公开(公告)日：2014-04-01

申请号：US13092282

申请日：2011-04-22

申请人： Shao-Hung Lu ,  Jing-Meng Liu ,  Jo-Yu Wang ,  Isaac Y. Chen ,  An-Tung Chen

发明人： Shao-Hung Lu ,  Jing-Meng Liu ,  Jo-Yu Wang ,  Isaac Y. Chen ,  An-Tung Chen

IPC分类号： H02H3/00

CPC分类号： H02M1/32

摘要： For a system to avoid abnormal operation caused by a shorted parameter setting pin of an integrated circuit, a protection apparatus and method apply a buffered reference voltage to the parameter setting pin to define an internal parameter of the integrated circuit by the buffered reference voltage and an external element connected to the parameter setting pin, and detect the rapid variation of the internal parameter to trigger a shutdown signal or slow down the speed of the variation of the internal parameter reflected to an adjustable signal of the integrated circuit.

摘要翻译： 为了避免由集成电路的短路参数设置引脚引起的异常操作的系统，保护装置和方法将缓冲的参考电压施加到参数设置引脚，以通过缓冲的参考电压定义集成电路的内部参数，并且 外部元件连接到参数设置引脚，并检测内部参数的快速变化以触发关断信号或将内部参数变化的速度降低到集成电路的可调信号。

公开(公告)号：US08085022B2

公开(公告)日：2011-12-27

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： G05F1/00

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：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：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：US08451887B2

公开(公告)日：2013-05-28

申请号：US13087466

申请日：2011-04-15

申请人： An-Tung Chen ,  Shao-Hung Lu ,  Isaac Y. Chen

发明人： An-Tung Chen ,  Shao-Hung Lu ,  Isaac Y. Chen

IPC分类号： H03K7/08

CPC分类号： H03K7/08 ,  H02M2003/1586 ,  H03K19/00346

摘要： A multi-channel regulator system includes serially connected PWM integrated circuits, each of which determines a PWM signal for a respective channel to operate therewith, and individually controls its operation mode according to whether or not an external clock is detected. Therefore, each channel will not be limited to operate under a constant mode and could become a master channel or a slave channel. Additionally, each of the PWM integrated circuits generates a phase shifted synchronous clock for its next channel during it is enabled, and thus all the channels operate in a synchronous but phase interleaving manner.

摘要翻译： 多通道稳压器系统包括串联连接的PWM集成电路，每个PWM集成电路确定用于相应通道的PWM信号以进行操作，并且根据是否检测到外部时钟单独地控制其操作模式。 因此，每个通道不限于在恒定模式下工作，并且可以成为主通道或从通道。 此外，每个PWM集成电路在其使能期间产生用于其下一个通道的相移同步时钟，因此所有通道以同步但相位交错的方式工作。