公开(公告)号：US08879283B2

公开(公告)日：2014-11-04

申请号：US12912050

申请日：2010-10-26

申请人： Dongze Yang ,  Yaming Cao ,  Yunchao Zhang ,  Lieyi Fang

发明人： Dongze Yang ,  Yaming Cao ,  Yunchao Zhang ,  Lieyi Fang

IPC分类号： H02M3/335 ,  H02M1/32 ,  H02M1/00

CPC分类号： H02M3/33515 ,  H02H7/1213 ,  H02M1/08 ,  H02M1/32 ,  H02M3/33507 ,  H02M2001/0009

摘要： System and method for protecting a power converter. The system includes a first comparator configured to receive a first threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a second comparator configured to receive a second threshold signal and the first signal and to generate a second comparison signal. The second threshold signal is different from the first threshold signal in magnitude. Moreover, the system includes a first detection component configured to receive at least the second comparison signal, detect the second comparison signal only if one or more predetermined conditions are satisfied, and generate a first detection signal based on at least information associated with the detected second comparison signal.

摘要翻译： 保护电源转换器的系统和方法。 该系统包括被配置为接收第一阈值信号和第一信号并产生第一比较信号的第一比较器。 第一个信号与功率转换器的输入电流相关联。 另外，该系统包括第二比较器，其被配置为接收第二阈值信号和第一信号并产生第二比较信号。 第二阈值信号的大小与第一阈值信号不同。 此外，该系统包括被配置为至少接收第二比较信号的第一检测组件，仅在满足一个或多个预定条件时检测第二比较信号，并且至少基于与检测到的第二比较信号相关联的信息产生第一检测信号 比较信号。

公开(公告)号：US20110267853A1

公开(公告)日：2011-11-03

申请号：US12912050

申请日：2010-10-26

申请人： Dongze Yang ,  Yaming Cao ,  Yunchao Zhang ,  Lieyi Fang

发明人： Dongze Yang ,  Yaming Cao ,  Yunchao Zhang ,  Lieyi Fang

IPC分类号： H02H7/122

CPC分类号： H02M3/33515 ,  H02H7/1213 ,  H02M1/08 ,  H02M1/32 ,  H02M3/33507 ,  H02M2001/0009

摘要： System and method for protecting a power converter. The system includes a first comparator configured to receive a first threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a second comparator configured to receive a second threshold signal and the first signal and to generate a second comparison signal. The second threshold signal is different from the first threshold signal in magnitude. Moreover, the system includes a first detection component configured to receive at least the second comparison signal, detect the second comparison signal only if one or more predetermined conditions are satisfied, and generate a first detection signal based on at least information associated with the detected second comparison signal.

摘要翻译： 保护电源转换器的系统和方法。 该系统包括被配置为接收第一阈值信号和第一信号并产生第一比较信号的第一比较器。 第一个信号与功率转换器的输入电流相关联。 另外，该系统包括第二比较器，其被配置为接收第二阈值信号和第一信号并产生第二比较信号。 第二阈值信号的大小与第一阈值信号不同。 此外，该系统包括被配置为至少接收第二比较信号的第一检测组件，仅在满足一个或多个预定条件时检测第二比较信号，并且至少基于与检测到的第二比较信号相关联的信息产生第一检测信号 比较信号。

公开(公告)号：US09244472B2

公开(公告)日：2016-01-26

申请号：US13554977

申请日：2012-07-20

申请人： Yaming Cao ,  Dongze Yang ,  Qiang Luo ,  Lieyi Fang

发明人： Yaming Cao ,  Dongze Yang ,  Qiang Luo ,  Lieyi Fang

IPC分类号： H02M3/156 ,  G05F1/10 ,  H02M1/00

CPC分类号： H02M3/156 ,  G05F1/10 ,  H02M2001/0003

摘要： System and method for regulating a power conversion system. For example, a system controller for regulating a power conversion system includes an amplifier, a variable-resistance component, a capacitor, and a modulation and drive component. The amplifier is configured to receive a reference signal and a feedback signal associated with an output signal of the power conversion system, the amplifier including an amplifier terminal. The variable-resistance component is associated with a first variable resistance value, the variable-resistance component including a first component terminal and a second component terminal, the first component terminal being coupled with the amplifier terminal. The capacitor includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being coupled with the second component terminal. The modulation and drive component includes a first terminal and a second terminal, the first terminal being coupled with the amplifier terminal.

摘要翻译： 用于调节电力转换系统的系统和方法。 例如，用于调节功率转换系统的系统控制器包括放大器，可变电阻部件，电容器以及调制和驱动部件。 放大器被配置为接收与功率转换系统的输出信号相关联的参考信号和反馈信号，该放大器包括放大器端子。 所述可变电阻分量与第一可变电阻值相关联，所述可变电阻分量包括第一分量端子和第二分量端子，所述第一分量端子与所述放大器端子耦合。 电容器包括第一电容器端子和第二电容器端子，第一电容器端子与第二组件端子耦合。 调制和驱动部件包括第一端子和第二端子，第一端子与放大器端子耦合。

公开(公告)号：US20140009132A1

公开(公告)日：2014-01-09

申请号：US13554977

申请日：2012-07-20

申请人： Yaming Cao ,  Dongze YANG ,  Qiang LUO ,  Lieyi FANG

发明人： Yaming Cao ,  Dongze YANG ,  Qiang LUO ,  Lieyi FANG

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  G05F1/10 ,  H02M2001/0003

摘要： System and method for regulating a power conversion system. For example, a system controller for regulating a power conversion system includes an amplifier, a variable-resistance component, a capacitor, and a modulation and drive component. The amplifier is configured to receive a reference signal and a feedback signal associated with an output signal of the power conversion system, the amplifier including an amplifier terminal. The variable-resistance component is associated with a first variable resistance value, the variable-resistance component including a first component terminal and a second component terminal, the first component terminal being coupled with the amplifier terminal. The capacitor includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being coupled with the second component terminal. The modulation and drive component includes a first terminal and a second terminal, the first terminal being coupled with the amplifier terminal.

摘要翻译： 用于调节电力转换系统的系统和方法。 例如，用于调节功率转换系统的系统控制器包括放大器，可变电阻部件，电容器以及调制和驱动部件。 放大器被配置为接收与功率转换系统的输出信号相关联的参考信号和反馈信号，该放大器包括放大器端子。 所述可变电阻分量与第一可变电阻值相关联，所述可变电阻分量包括第一分量端子和第二分量端子，所述第一分量端子与所述放大器端子耦合。 电容器包括第一电容器端子和第二电容器端子，第一电容器端子与第二组件端子耦合。 调制和驱动部件包括第一端子和第二端子，第一端子与放大器端子耦合。

公开(公告)号：US20120147630A1

公开(公告)日：2012-06-14

申请号：US13005427

申请日：2011-01-12

申请人： Yaming Cao ,  Jinya Dong ,  Yunchao Zhang ,  Lieyi Fang

发明人： Yaming Cao ,  Jinya Dong ,  Yunchao Zhang ,  Lieyi Fang

IPC分类号： H02M3/335

CPC分类号： H02M1/32 ,  H02H3/006 ,  H02M3/33507

摘要： System and method for protecting a power converter. The system includes a duty-cycle detection component configured to receive a modulation signal, determine a first duty cycle corresponding to a first period of the modulation signal, compare the first duty cycle with a threshold duty cycle, and generate a duty-cycle comparison signal. Additionally, the system includes a threshold generator configured to receive the duty-cycle comparison signal and generate a threshold signal corresponding to a second period of the modulation signal, the second period being after the first period, and a comparator configured to receive the threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Moreover, the system includes a pulse-width-modulation component configured to receive the first comparison signal and generate the modulation signal for adjusting the input current for the power converter.

摘要翻译： 保护电源转换器的系统和方法。 该系统包括：占空比检测部件，被配置为接收调制信号，确定与调制信号的第一周期对应的第一占空比，将第一占空比与阈值占空比进行比较，并产生占空比比较信号 。 另外，该系统包括阈值发生器，其被配置为接收占空比比较信号并产生对应于调制信号的第二周期的阈值信号，第二周期在第一周期之后，以及比较器，被配置为接收阈值信号 和第一信号并产生第一比较信号。 第一个信号与功率转换器的输入电流相关联。 此外，该系统包括脉冲宽度调制分量，其被配置为接收第一比较信号并产生用于调整功率转换器的输入电流的调制信号。

公开(公告)号：US20120075891A1

公开(公告)日：2012-03-29

申请号：US13071384

申请日：2011-03-24

申请人： Yunchao Zhang ,  Yaming Cao ,  Xiaomin Huang ,  Xiuhong Zhang ,  Lieyi Fang

发明人： Yunchao Zhang ,  Yaming Cao ,  Xiaomin Huang ,  Xiuhong Zhang ,  Lieyi Fang

IPC分类号： H02M3/335

CPC分类号： H02M3/33515 ,  H02M1/08 ,  H02M3/335 ,  H02M3/33523 ,  H02M2001/0009 ,  H05B33/0815

摘要： System and method for regulating a power converter. The system includes a first signal generator configured to receive a first sensed signal and generate an output signal associated with demagnetization. The first sensed signal is related to a first winding coupled to a secondary winding for a power converter, and the secondary winding is associated with at least an output current for the power converter. Additionally, the system includes a ramping signal generator configured to receive the output signal and generate a ramping signal, and a first comparator configured to receive the ramping signal and a first threshold signal and generate a first comparison signal based on at least information associated with the ramping signal and the first threshold signal. Moreover, the system includes a second comparator configured to receive a second sensed signal and a second threshold signal and generate a second comparison signal.

摘要翻译： 用于调节功率转换器的系统和方法。 该系统包括被配置为接收第一感测信号并产生与去磁相关联的输出信号的第一信号发生器。 第一感测信号与耦合到功率转换器的次级绕组的第一绕组有关，次级绕组至少与功率转换器的输出电流相关联。 另外，该系统包括斜坡信号发生器，其被配置为接收输出信号并产生斜坡信号，以及第一比较器，被配置为接收斜坡信号和第一阈值信号，并且至少基于至少与 斜坡信号和第一阈值信号。 此外，该系统包括被配置为接收第二感测信号和第二阈值信号并产生第二比较信号的第二比较器。

公开(公告)号：US08559152B2

公开(公告)日：2013-10-15

申请号：US13005427

申请日：2011-01-12

申请人： Yaming Cao ,  Jinya Dong ,  Yunchao Zhang ,  Lieyi Fang

发明人： Yaming Cao ,  Jinya Dong ,  Yunchao Zhang ,  Lieyi Fang

IPC分类号： H02H5/04

CPC分类号： H02M1/32 ,  H02H3/006 ,  H02M3/33507

摘要： System and method for protecting a power converter. The system includes a duty-cycle detection component configured to receive a modulation signal, determine a first duty cycle corresponding to a first period of the modulation signal, compare the first duty cycle with a threshold duty cycle, and generate a duty-cycle comparison signal. Additionally, the system includes a threshold generator configured to receive the duty-cycle comparison signal and generate a threshold signal corresponding to a second period of the modulation signal, the second period being after the first period, and a comparator configured to receive the threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Moreover, the system includes a pulse-width-modulation component configured to receive the first comparison signal and generate the modulation signal for adjusting the input current for the power converter.

摘要翻译： 保护电源转换器的系统和方法。 该系统包括：占空比检测部件，被配置为接收调制信号，确定与调制信号的第一周期对应的第一占空比，将第一占空比与阈值占空比进行比较，并产生占空比比较信号 。 另外，该系统包括阈值发生器，其被配置为接收占空比比较信号并产生对应于调制信号的第二周期的阈值信号，第二周期在第一周期之后，以及比较器，被配置为接收阈值信号 和第一信号并产生第一比较信号。 第一个信号与功率转换器的输入电流相关联。 此外，该系统包括脉冲宽度调制分量，其被配置为接收第一比较信号并产生用于调整功率转换器的输入电流的调制信号。

公开(公告)号：US08488342B2

公开(公告)日：2013-07-16

申请号：US13071384

申请日：2011-03-24

申请人： Yunchao Zhang ,  Yaming Cao ,  Xiaomin Huang ,  Xiuhong Zhang ,  Lieyi Fang

发明人： Yunchao Zhang ,  Yaming Cao ,  Xiaomin Huang ,  Xiuhong Zhang ,  Lieyi Fang

IPC分类号： H02M3/335 ,  G05F1/00

CPC分类号： H02M3/33515 ,  H02M1/08 ,  H02M3/335 ,  H02M3/33523 ,  H02M2001/0009 ,  H05B33/0815

摘要： System and method for regulating a power converter. The system includes a first signal generator configured to receive a first sensed signal and generate an output signal associated with demagnetization. The first sensed signal is related to a first winding coupled to a secondary winding for a power converter, and the secondary winding is associated with at least an output current for the power converter. Additionally, the system includes a ramping signal generator configured to receive the output signal and generate a ramping signal, and a first comparator configured to receive the ramping signal and a first threshold signal and generate a first comparison signal based on at least information associated with the ramping signal and the first threshold signal. Moreover, the system includes a second comparator configured to receive a second sensed signal and a second threshold signal and generate a second comparison signal.

摘要翻译： 用于调节功率转换器的系统和方法。 该系统包括被配置为接收第一感测信号并产生与去磁相关联的输出信号的第一信号发生器。 第一感测信号与耦合到功率转换器的次级绕组的第一绕组有关，次级绕组至少与功率转换器的输出电流相关联。 另外，该系统包括斜坡信号发生器，其被配置为接收输出信号并产生斜坡信号，以及第一比较器，被配置为接收斜坡信号和第一阈值信号，并且基于至少基于与第 斜坡信号和第一阈值信号。 此外，该系统包括被配置为接收第二感测信号和第二阈值信号并产生第二比较信号的第二比较器。

公开(公告)号：US20100128501A1

公开(公告)日：2010-05-27

申请号：US12581775

申请日：2009-10-19

申请人： Xiaomin Huang ,  Yaming Cao ,  Xiuhong Zhang ,  Lieyi Fang

发明人： Xiaomin Huang ,  Yaming Cao ,  Xiuhong Zhang ,  Lieyi Fang

IPC分类号： H02M3/335

CPC分类号： H02M3/33523

摘要： System and method for regulating a power converter. The system includes a first signal generator configured to receive at least an input signal and generate at least a first output signal associated with demagnetization and a second output signal associated with sampling. Additionally, the system includes a sampling component configured to receive at least the input signal and the second output signal, sample the input signal based on at least information associated with the second output signal, and generate at least a third output signal associated with one or more sampled magnitudes. Moreover, the system includes an error amplifier configured to receive at least the third output signal and a first threshold voltage and generate at least a fourth output signal with a capacitor, the capacitor being coupled to the error amplifier.

摘要翻译： 用于调节功率转换器的系统和方法。 该系统包括第一信号发生器，其被配置为接收至少一个输入信号并且产生与去磁有关的至少第一输出信号和与取样相关联的第二输出信号。 另外，该系统包括被配置为至少接收输入信号和第二输出信号的采样分量，至少基于与第二输出信号相关联的信息对输入信号进行采样，并且产生与一个或多个输出信号相关联的至少第三输出信号 更多采样幅度。 此外，该系统包括误差放大器，该误差放大器被配置为接收至少第三输出信号和第一阈值电压并且用电容器产生至少第四输出信号，该电容器耦合到误差放大器。

公开(公告)号：US08941324B2

公开(公告)日：2015-01-27

申请号：US13105780

申请日：2011-05-11

申请人： Jun Zhou ,  Zhongliang Xiong ,  Miao Li ,  Yaming Cao ,  Qiang Luo ,  Lieyi Fang

发明人： Jun Zhou ,  Zhongliang Xiong ,  Miao Li ,  Yaming Cao ,  Qiang Luo ,  Lieyi Fang

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B33/0845 ,  H05B33/0815 ,  H05B33/0851 ,  H05B37/02

摘要： System and method for dimming control. The system includes a system controller including a first controller terminal and a second controller terminal, a transistor including a first transistor terminal, a second transistor terminal and a third transistor terminal, and a resistor including a first resistor terminal and a second resistor terminal. The system controller is configured to generate a first signal at the first controller terminal based on an input signal and to generate a second signal at the second controller terminal based on the first signal. The first transistor terminal is coupled to the second controller terminal. The first resistor terminal is coupled to the second transistor terminal. The second resistor terminal is coupled to the third transistor terminal. The transistor is configured to receive the second signal at the first transistor terminal and to change between two conditions in response to the second signal.

摘要翻译： 调光控制系统及方法。 该系统包括具有第一控制器端子和第二控制器端子的系统控制器，包括第一晶体管端子，第二晶体管端子和第三晶体管端子的晶体管，以及包括第一电阻端子和第二电阻端子的电阻器。 系统控制器被配置为基于输入信号在第一控制器终端产生第一信号，并且基于第一信号在第二控制器终端产生第二信号。 第一晶体管端子耦合到第二控制器端子。 第一电阻端子耦合到第二晶体管端子。 第二电阻端子耦合到第三晶体管端子。 晶体管被配置为在第一晶体管端子处接收第二信号并响应于第二信号在两个条件之间变化。