公开(公告)号：US20110316428A1

公开(公告)日：2011-12-29

申请号：US12861137

申请日：2010-08-23

Applicant: Miao Li ,  Liqiang Zhu ,  Lieyi Fang

Inventor： Miao Li ,  Liqiang Zhu ,  Lieyi Fang

IPC: H05B37/02

CPC classification number: H05B41/39 ,  H05B41/282 ,  H05B41/3927 ,  Y02B20/183

Abstract: System and method for adjusting brightness of one or more cold-cathode fluorescent lamps. The system includes a voltage selector configured to receive a dimming voltage and a first threshold voltage and generate an output voltage. The output voltage is selected from a group consisting of the dimming voltage and the first threshold voltage. Additionally, the system includes an oscillator coupled to a first capacitor and configured to generate a ramp signal with the first capacitor, and a signal generator configured to receive the ramp signal and the output voltage and generate a first signal. The first signal corresponds to a lamp brightness level. Moreover, the system includes a brightness detector configured to receive the first signal and output a second signal. The second signal indicates whether the lamp brightness level is higher than a threshold brightness level.

Abstract translation: 用于调节一个或多个冷阴极荧光灯的亮度的系统和方法。 该系统包括被配置为接收调光电压和第一阈值电压并产生输出电压的电压选择器。 输出电压从由调光电压和第一阈值电压组成的组中选择。 另外，该系统包括耦合到第一电容器并被配置为产生与第一电容器的斜坡信号的振荡器，以及被配置为接收斜坡信号和输出电压并产生第一信号的信号发生器。 第一个信号对应于灯的亮度级别。 此外，该系统包括配置成接收第一信号并输出​​第二信号的亮度检测器。 第二信号指示灯亮度是否高于阈值亮度级。

公开(公告)号：US20110068705A1

公开(公告)日：2011-03-24

申请号：US12874096

申请日：2010-09-01

Applicant: Changshan Zhang ,  Jun Ye ,  Lieyi Fang

Inventor： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

IPC: H05B41/36

CPC classification number: H05B41/282 ,  H05B41/2853

Abstract: System and method for driving a cold-cathode fluorescent lamp. The system includes a control subsystem configured to generate one or more control signals, and a power supply subsystem configured to receive the one or more control signals and a DC input voltage, convert the DC input voltage to an AC output voltage, and send the AC output voltage to a cold-cathode fluorescent lamp. If the DC input voltage is lower than a predetermined threshold, the system for driving the cold-cathode fluorescent lamp is turned off in response to the one or more control signals.

Abstract translation: 用于驱动冷阴极荧光灯的系统和方法。 该系统包括配置成产生一个或多个控制信号的控制子系统和被配置为接收一个或多个控制信号和DC输入电压的电源子系统，将DC输入电压转换成AC输出电压，并且发送AC 输出电压到冷阴极荧光灯。 如果直流输入电压低于预定阈值，则根据一个或多个控制信号关闭用于驱动冷阴极荧光灯的系统。

公开(公告)号：US07826237B2

公开(公告)日：2010-11-02

申请号：US12123289

申请日：2008-05-19

Applicant: Xiuhong Zhang ,  Zhen Zhu ,  Yaming Cao ,  Lieyi Fang

Inventor： Xiuhong Zhang ,  Zhen Zhu ,  Yaming Cao ,  Lieyi Fang

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

Abstract: Method and system for efficient power control with multiple modes. According to an embodiment, the present invention provides a power system with selectable power modes. The power system includes a first terminal for outputting energy, and the first terminal is electrically coupled to a load. The system also includes a pulse-frequency modulation (PFM) component that is configured to adjust a pulse frequency based on the load. The system additionally includes a pulse-width modulation (PWM) component that is configured to adjust a pulse width based on the load. The system further includes a switch that is electrically coupled to the first terminal. Also, the system includes a control component, the control component being configured to provide a control signal that is capable of causing the switch to be turned on or off. The control signal is associated with an output of the PWM component and the pulse width if an output is greater than a predetermined value. The control signal is associated with an output of the PFM component and the pulse frequency if an output is lower than a predetermined value.

Abstract translation: 多种模式的高效功率控制方法和系统。 根据实施例，本发明提供了一种具有可选功率模式的电力系统。 电力系统包括用于输出能量的第一端子，并且第一端子电耦合到负载。 该系统还包括脉冲频率调制（PFM）组件，其被配置为基于负载来调节脉冲频率。 该系统还包括脉冲宽度调制（PWM）组件，其被配置为基于负载调整脉冲宽度。 该系统还包括电耦合到第一端子的开关。 此外，该系统包括控制部件，该控制部件被配置为提供能够使开关导通或断开的控制信号。 如果输出大于预定值，则控制信号与PWM分量的输出和脉冲宽度相关联。 如果输出低于预定值，则控制信号与PFM分量的输出和脉冲频率相关联。

公开(公告)号：US07812548B2

公开(公告)日：2010-10-12

申请号：US11871125

申请日：2007-10-11

Applicant: Changshan Zhang ,  Jun Ye ,  Lieyi Fang

Inventor： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

IPC: G05F1/00

CPC classification number: H05B41/282 ,  H05B41/2853

Abstract: System and method for driving a cold-cathode fluorescent lamp. The system includes a control subsystem configured to generate one or more control signals, and a power supply subsystem configured to receive the one or more control signals and a DC input voltage, convert the DC input voltage to an AC output voltage, and send the AC output voltage to a cold-cathode fluorescent lamp. If the DC input voltage is lower than a predetermined threshold, the system for driving the cold-cathode fluorescent lamp is turned off in response to the one or more control signals.

Abstract translation: 用于驱动冷阴极荧光灯的系统和方法。 该系统包括配置成产生一个或多个控制信号的控制子系统和被配置为接收一个或多个控制信号和DC输入电压的电源子系统，将DC输入电压转换成AC输出电压，并且发送AC 输出电压到冷阴极荧光灯。 如果直流输入电压低于预定阈值，则根据一个或多个控制信号关闭用于驱动冷阴极荧光灯的系统。

公开(公告)号：US20100219802A1

公开(公告)日：2010-09-02

申请号：US12409287

申请日：2009-03-23

Applicant: Yuan Lin ,  Jun Ye ,  Lieyi Fang

Inventor： Yuan Lin ,  Jun Ye ,  Lieyi Fang

IPC: G05F1/10

CPC classification number: H02M3/33507 ,  H02M2001/0022 ,  Y02B70/1433

Abstract: Switch-mode power conversion system and method thereof. The switch-mode power conversion system includes a primary winding configured to receive an input voltage, and a secondary winding coupled to the primary winding and configured to, with one or more other components, generate an output signal. Additionally, the switch-mode power conversion system includes a feedback component configured to receive the output signal and generate a feedback signal based on at least information associated with the output signal, and a voltage detector configured to receive the input voltage and output a detection signal. Moreover, the switch-mode power conversion system includes a mode controller configured to receive the detection signal and the feedback signal and generate a switch signal based on at least information associated with the detection signal and the feedback signal, and a switch configured to receive the switch signal and affect a first current flowing through the primary winding.

Abstract translation: 开关电源转换系统及其方法。 开关模式功率转换系统包括被配置为接收输入电压的初级绕组和耦合到初级绕组的次级绕组，并且被配置成与一个或多个其他部件一起产生输出信号。 另外，开关模式功率转换系统包括被配置为接收输出信号并基于至少与输出信号相关联的信息产生反馈信号的反馈分量，以及被配置为接收输入电压并输出检测信号的电压检测器 。 此外，开关模式电力转换系统包括模式控制器，其被配置为接收检测信号和反馈信号，并且至少基于与检测信号和反馈信号相关联的信息产生开关信号，以及开关，被配置为接收 开关信号并影响流经初级绕组的第一电流。

公开(公告)号：US20100165675A1

公开(公告)日：2010-07-01

申请号：US12691624

申请日：2010-01-21

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

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

IPC: H02M1/44

CPC classification number: H03K7/08 ,  H02M1/44 ,  H02M3/156

Abstract: 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.

Abstract translation: 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

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

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

IPC: H04B1/00

CPC classification number: H03K7/08 ,  H02M1/44 ,  H02M3/156

Abstract: 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.

Abstract translation: 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：US20090206814A1

公开(公告)日：2009-08-20

申请号：US12123289

申请日：2008-05-19

Applicant: Xiuhong Zhang ,  Zhen Zhu ,  Yaming Cao ,  Lieyi Fang

Inventor： Xiuhong Zhang ,  Zhen Zhu ,  Yaming Cao ,  Lieyi Fang

IPC: G05F1/00

CPC classification number: H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

Abstract: Method and system for efficient power control with multiple modes. According to an embodiment, the present invention provides a power system with selectable power modes. The power system includes a first terminal for outputting energy, and the first terminal is electrically coupled to a load. The system also includes a pulse-frequency modulation (PFM) component that is configured to adjust a pulse frequency based on the load. The system additionally includes a pulse-width modulation (PWM) component that is configured to adjust a pulse width based on the load. The system further includes a switch that is electrically coupled to the first terminal. Also, the system includes a control component, the control component being configured to provide a control signal that is capable of causing the switch to be turned on or off. The control signal is associated with an output of the PWM component and the pulse width if an output is greater than a predetermined value. The control signal is associated with an output of the PFM component and the pulse frequency if an output is lower than a predetermined value.

Abstract translation: 多种模式的高效功率控制方法和系统。 根据实施例，本发明提供了一种具有可选功率模式的电力系统。 电力系统包括用于输出能量的第一端子，并且第一端子电耦合到负载。 该系统还包括脉冲频率调制（PFM）组件，其被配置为基于负载来调节脉冲频率。 该系统还包括脉冲宽度调制（PWM）组件，其被配置为基于负载调整脉冲宽度。 该系统还包括电耦合到第一端子的开关。 此外，该系统包括控制部件，该控制部件被配置为提供能够使开关导通或断开的控制信号。 如果输出大于预定值，则控制信号与PWM分量的输出和脉冲宽度相关联。 如果输出低于预定值，则控制信号与PFM分量的输出和脉冲频率相关联。

公开(公告)号：US20090096387A1

公开(公告)日：2009-04-16

申请号：US11872604

申请日：2007-10-15

Applicant: Lieyi Fang ,  Changshan Zhang ,  Zhiliang Chen ,  Shifeng Zhao

Inventor： Lieyi Fang ,  Changshan Zhang ,  Zhiliang Chen ,  Shifeng Zhao

IPC: H05B41/36

CPC classification number: H05B41/2822

Abstract: 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.

Abstract translation: 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

Applicant: Zhiliang Chen ,  Shifeng Zhao ,  Lieyi Fang ,  Zhenhua Li

Inventor： Zhiliang Chen ,  Shifeng Zhao ,  Lieyi Fang ,  Zhenhua Li

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M2001/0006

Abstract: 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.

Abstract translation: 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。