公开(公告)号：US20100165675A1

公开(公告)日：2010-07-01

申请号：US12691624

申请日：2010-01-21

申请人： Jun Ye ,  Zhen Zhu ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

发明人： Jun Ye ,  Zhen Zhu ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

IPC分类号： H02M1/44

CPC分类号： H03K7/08 ,  H02M1/44 ,  H02M3/156

摘要： System and method for providing frequency control to a power converter. The system includes a pseudorandom signal generator configured to generate a digital signal. The digital signal is associated with at least an N-bit datum, and N is a positive integer. Additionally, the system includes a digital-to-analog converter configured to receive the digital signal and generate a first control signal, an output signal generator configured to receive the first control signal and generate at least a first output signal associated with a frequency, and a pulse-width-modulation generator configured to receive at least the first output signal. The N-bit datum represents a pseudorandom number.

摘要翻译： 向功率转换器提供频率控制的系统和方法。 该系统包括被配置为产生数字信号的伪随机信号发生器。 数字信号与至少一个N位数据相关联，N是正整数。 另外，该系统包括被配置为接收数字信号并产生第一控制信号的数模转换器，被配置为接收第一控制信号并产生与频率相关联的至少第一输出信号的输出信号发生器，以及 脉冲宽度调制发生器，被配置为至少接收第一输出信号。 N位数据表示伪随机数。

公开(公告)号：US07684462B2

公开(公告)日：2010-03-23

申请号：US11102611

申请日：2005-04-07

申请人： Jun Ye ,  Zhen Zhu ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

发明人： Jun Ye ,  Zhen Zhu ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

IPC分类号： H04B1/00

CPC分类号： H03K7/08 ,  H02M1/44 ,  H02M3/156

摘要： System and method for providing frequency control to a power converter. The system includes a pseudorandom signal generator configured to generate a digital signal. The digital signal is associated with at least an N-bit datum, and N is a positive integer. Additionally, the system includes a digital-to-analog converter configured to receive the digital signal and generate a first control signal, an output signal generator configured to receive the first control signal and generate at least a first output signal associated with a frequency, and a pulse-width-modulation generator configured to receive at least the first output signal. The N-bit datum represents a pseudorandom number.

摘要翻译： 向功率转换器提供频率控制的系统和方法。 该系统包括被配置为产生数字信号的伪随机信号发生器。 数字信号与至少一个N位数据相关联，N是正整数。 另外，该系统包括被配置为接收数字信号并产生第一控制信号的数模转换器，被配置为接收第一控制信号并产生与频率相关联的至少第一输出信号的输出信号发生器，以及 脉冲宽度调制发生器，被配置为至少接收第一输出信号。 N位数据表示伪随机数。

公开(公告)号：US20090096387A1

公开(公告)日：2009-04-16

申请号：US11872604

申请日：2007-10-15

申请人： Lieyi Fang ,  Changshan Zhang ,  Zhiliang Chen ,  Shifeng Zhao

发明人： Lieyi Fang ,  Changshan Zhang ,  Zhiliang Chen ,  Shifeng Zhao

IPC分类号： H05B41/36

CPC分类号： H05B41/2822

摘要： Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps. According to an embodiment, the present invention provides a system for driving a plurality of cold-cathode fluorescent lamps. The system includes a subsystem configured to receive at least a DC voltage and generate a first AC voltage in response to at least the DC voltage. The system also includes a power converter configured to receive the first AC voltage and convert the first AC voltage to at least a second AC voltage. The system further includes a plurality of current balancing devices. Each of the plurality of current balancing devices is configured to receive two currents and balance the two currents. The plurality of current balancing devices includes at least a first current balancing device, a second current balancing device, and a third current balancing device. In addition, the system includes a plurality of lamp pairs.

摘要翻译： 用于多个冷阴极荧光灯和/或外部电极荧光灯的驱动器系统和方法。 根据实施例，本发明提供一种用于驱动多个冷阴极荧光灯的系统。 该系统包括被配置为接收至少DC电压并响应于至少DC电压产生第一AC电压的子系统。 该系统还包括功率转换器，其被配置为接收第一AC电压并将第一AC电压转换为至少第二AC电压。 该系统还包括多个电流平衡装置。 多个电流平衡装置中的每一个配置成接收两个电流并平衡两个电流。 多个电流平衡装置至少包括第一电流平衡装置，第二电流平衡装置和第三电流平衡装置。 另外，该系统包括多个灯对。

公开(公告)号：US07511978B2

公开(公告)日：2009-03-31

申请号：US11453567

申请日：2006-06-14

申请人： Zhiliang Chen ,  Shifeng Zhao ,  Lieyi Fang ,  Zhenhua Li

发明人： Zhiliang Chen ,  Shifeng Zhao ,  Lieyi Fang ,  Zhenhua Li

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M2001/0006

摘要： System and method for providing switching to power regulators. According to an embodiment, the present invention provides system for providing switching. The system includes a first voltage supply that is configured to provide a first voltage. The system also includes a second voltage supply that is configured to provide a second voltage. The second voltage being independent from the first voltage. The system additionally includes a controller component that is electrically coupled to the first voltage supply. For example, the controller component being configured to receive at least a first input signal and to provide at least a first output signal. Additionally, the system includes a gate driver component that is electrically coupled to the second voltage supply. The gate driver component is configured to receive at least the first output signal and generated a second output signal in response to at least the second voltage and the first output signal.

摘要翻译： 提供切换到功率调节器的系统和方法。 根据实施例，本发明提供用于提供切换的系统。 该系统包括被配置为提供第一电压的第一电压源。 该系统还包括被配置为提供第二电压的第二电压源。 第二电压独立于第一电压。 该系统还包括电耦合到第一电压源的控制器部件。 例如，控制器组件被配置为接收至少第一输入信号并且提供至少第一输出信号。 另外，该系统包括电耦合到第二电压源的栅极驱动器部件。 栅极驱动器部件被配置为至少接收第一输出信号并响应于至少第二电压和第一输出信号产生第二输出信号。

公开(公告)号：US07345895B2

公开(公告)日：2008-03-18

申请号：US11449142

申请日：2006-06-07

申请人： Zhen Zhu ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

发明人： Zhen Zhu ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

IPC分类号： H02M3/335

CPC分类号： H02M1/32 ,  H02M3/33507

摘要： System and method for protecting a power converter. The system includes a compensation system configured to receive an input signal and generate a control signal, a cycle threshold generator configured to receive the control signal and generate a cycle threshold, and a comparator configured to receive the cycle threshold and a feedback signal and generate a comparison signal. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control an input current for a power converter. The input current is associated with an output power for the power converter. The cycle threshold corresponds to a threshold power level for the output power. The threshold power level is constant, decreases, or increases with respect to the input signal.

公开(公告)号：US20070273345A1

公开(公告)日：2007-11-29

申请号：US11453567

申请日：2006-06-14

申请人： Zhiliang Chen ,  Shifeng Zhao ,  Lieyi Fang ,  Zhenhua Li

发明人： Zhiliang Chen ,  Shifeng Zhao ,  Lieyi Fang ,  Zhenhua Li

IPC分类号： G05F1/00

CPC分类号： H02M3/33523 ,  H02M2001/0006

摘要： System and method for providing switching to power regulators. According to an embodiment, the present invention provides system for providing switching. The system includes a first voltage supply that is configured to provide a first voltage. The system also includes a second voltage supply that is configured to provide a second voltage. The second voltage being independent from the first voltage. The system additionally includes a controller component that is electrically coupled to the first voltage supply. For example, the controller component being configured to receive at least a first input signal and to provide at least a first output signal. Additionally, the system includes a gate driver component that is electrically coupled to the second voltage supply. The gate driver component is configured to receive at least the first output signal and generated a second output signal in response to at least the second voltage and the first output signal.

摘要翻译： 提供切换到功率调节器的系统和方法。 根据实施例，本发明提供用于提供切换的系统。 该系统包括被配置为提供第一电压的第一电压源。 该系统还包括被配置为提供第二电压的第二电压源。 第二电压独立于第一电压。 该系统还包括电耦合到第一电压源的控制器部件。 例如，控制器组件被配置为接收至少第一输入信号并且提供至少第一输出信号。 另外，该系统包括电耦合到第二电压源的栅极驱动器部件。 栅极驱动器部件被配置为至少接收第一输出信号并响应于至少第二电压和第一输出信号产生第二输出信号。

公开(公告)号：US20070210840A1

公开(公告)日：2007-09-13

申请号：US11407682

申请日：2006-04-19

申请人： Zhen Zhu ,  Jun Ye ,  Zhiliang Chen ,  Lieyi Fang

发明人： Zhen Zhu ,  Jun Ye ,  Zhiliang Chen ,  Lieyi Fang

IPC分类号： H03L7/00

CPC分类号： H03K17/223 ,  H03K2217/0036

摘要： A system and method for power-on reset and under-voltage lockout schemes. The system includes a first transistor, which includes a first gate, a first terminal, and a second terminal, the second terminal being biased to a predetermined voltage. The system includes a second transistor, which include a second gate, a third terminal, and a fourth terminal, the third terminal being configured to receive an input voltage. The system includes a first resistor that is associated with a first resistance. The first resistor includes a fifth terminal and a sixth terminal, the fifth terminal being configured to receive the input voltage. The system includes a second resistor that is associated with a second resistance. The second resistor includes a seventh terminal and an eighth terminal, the seventh terminal being coupled to the sixth terminal. The system includes a first Zener diode that is associated with a first Zener voltage.

摘要翻译： 一种上电复位和欠压锁定方案的系统和方法。 该系统包括第一晶体管，其包括第一栅极，第一端子和第二端子，第二端子被偏置到预定电压。 该系统包括第二晶体管，其包括第二栅极，第三端子和第四端子，第三端子被配置为接收输入电压。 该系统包括与第一电阻相关联的第一电阻器。 第一电阻器包括第五端子和第六端子，第五端子被配置为接收输入电压。 该系统包括与第二电阻相关联的第二电阻器。 第二电阻器包括第七端子和第八端子，第七端子耦合到第六端子。 该系统包括与第一齐纳电压相关联的第一齐纳二极管。

公开(公告)号：US20060291258A1

公开(公告)日：2006-12-28

申请号：US11449142

申请日：2006-06-07

申请人： Zhen Zhu ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

发明人： Zhen Zhu ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

IPC分类号： H02M3/335

CPC分类号： H02M1/32 ,  H02M3/33507

摘要： System and method for protecting a power converter. The system includes a compensation system configured to receive an input signal and generate a control signal, a cycle threshold generator configured to receive the control signal and generate a cycle threshold, and a comparator configured to receive the cycle threshold and a feedback signal and generate a comparison signal. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control an input current for a power converter. The input current is associated with an output power for the power converter. The cycle threshold corresponds to a threshold power level for the output power. The threshold power level is constant, decreases, or increases with respect to the input signal.

公开(公告)号：US20060221646A1

公开(公告)日：2006-10-05

申请号：US11102611

申请日：2005-04-07

申请人： Jun Ye ,  Zhen Zhu ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

发明人： Jun Ye ,  Zhen Zhu ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

IPC分类号： H02M7/00

CPC分类号： H03K7/08 ,  H02M1/44 ,  H02M3/156

摘要： System and method for providing frequency control to a power converter. The system includes a pseudorandom signal generator configured to generate a digital signal. The digital signal is associated with at least an N-bit datum, and N is a positive integer. Additionally, the system includes a digital-to-analog converter configured to receive the digital signal and generate a first control signal, an output signal generator configured to receive the first control signal and generate at least a first output signal associated with a frequency, and a pulse-width-modulation generator configured to receive at least the first output signal. The N-bit datum represents a pseudorandom number.

公开(公告)号：US07099164B2

公开(公告)日：2006-08-29

申请号：US11051242

申请日：2005-02-04

申请人： Zhen Zhu ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

发明人： Zhen Zhu ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang ,  Zhiliang Chen

IPC分类号： H02M3/335 ,  H02M1/12

CPC分类号： H02M1/32 ,  H02M3/33507

摘要： System and method for protecting a power converter. The system includes a compensation system configured to receive an input signal and generate a control signal, a cycle threshold generator configured to receive the control signal and generate a cycle threshold, and a comparator configured to receive the cycle threshold and a feedback signal and generate a comparison signal. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control an input current for a power converter. The input current is associated with an output power for the power converter. The cycle threshold corresponds to a threshold power level for the output power. The threshold power level is constant, decreases, or increases with respect to the input 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输入信号并产生控制信号的补偿系统，配置成接收控制信号并产生周期阈值的周期阈值发生器，以及配置成接收周期阈值和反馈信号并产生 比较信号。 此外，该系统包括：脉冲宽度调制发生器，被配置为接收比较信号并响应于比较信号产生调制信号;以及开关，被配置为接收调制信号并控制功率转换器的输入电流。 输入电流与功率转换器的输出功率有关。 周期阈值对应于输出功率的阈值功率电平。 阈值功率电平相对于输入信号是恒定的，减小的或增加的。