公开(公告)号：US08432099B2

公开(公告)日：2013-04-30

申请号：US12861137

申请日：2010-08-23

申请人： Miao Li ,  Liqiang Zhu ,  Lieyi Fang

发明人： Miao Li ,  Liqiang Zhu ,  Lieyi Fang

IPC分类号： H05B37/02

CPC分类号： H05B41/39 ,  H05B41/282 ,  H05B41/3927 ,  Y02B20/183

摘要： 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.

摘要翻译： 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：US20130100715A1

公开(公告)日：2013-04-25

申请号：US13323458

申请日：2011-12-12

申请人： Yuan Lin ,  Lieyi Fang

发明人： Yuan Lin ,  Lieyi Fang

IPC分类号： H02M3/335

CPC分类号： H02M1/44 ,  H02M3/33507 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

摘要： System and method are provided for regulating a power converter. The system includes a signal processing component configured to receive a first input signal and a second input signal, process information associated with the first input signal and the second input signal, and output a drive signal to a switch based on at least information associated with the first input signal and the second input signal. The first input signal is associated with at least a feedback signal related to an output voltage of the power converter. The second input signal is associated with at least a primary current flowing through a primary winding of the power converter. The signal processing component is further configured to change a peak value of the primary current within a first predetermined range, and change the switching frequency of the power converter within a second predetermined range.

摘要翻译： 提供了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输入信号和第二输入信号的信号处理部件，与第一输入信号和第二输入信号相关联的处理信息，并且基于至少基于与第二输入信号相关联的信息将驱动信号输出到开关 第一输入信号和第二输入信号。 第一输入信号至少与功率转换器的输出电压有关的反馈信号相关联。 第二输入信号与流过功率转换器的初级绕组的至少一个初级电流相关联。 信号处理部件还被配置为将初级电流的峰值改变在第一预定范围内，并且将功率转换器的开关频率改变在第二预定范围内。

公开(公告)号：US20130093474A1

公开(公告)日：2013-04-18

申请号：US13297085

申请日：2011-11-15

申请人： Jiqing Yang ,  Meng Li ,  Qiang Luo ,  Lieyi Fang

发明人： Jiqing Yang ,  Meng Li ,  Qiang Luo ,  Lieyi Fang

IPC分类号： H03K3/00

CPC分类号： H03K17/302 ,  H03K17/063 ,  H03K2217/0081

摘要： System and method are provided for driving a transistor. The system includes a floating-voltage generator, a first driving circuit, and a second driving circuit. The floating-voltage generator is configured to receive a first bias voltage and generate a floating voltage, the floating-voltage generator being further configured to change the floating voltage if the first bias voltage changes and to maintain the floating voltage to be lower than the first bias voltage by a first predetermined value in magnitude. The first driving circuit is configured to receive an input signal, the first bias voltage and the floating voltage. The second driving circuit is configured to receive the input signal, a second bias voltage and a third bias voltage, the first driving circuit and the second driving circuit being configured to generate an output signal to drive a transistor.

摘要翻译： 提供了用于驱动晶体管的系统和方法。 该系统包括浮置电压发生器，第一驱动电路和第二驱动电路。 浮置电压发生器被配置为接收第一偏置电压并产生浮置电压，该浮动电压发生器进一步被配置为如果第一偏置电压改变则改变浮动电压，并且将浮置电压保持为低于第一偏置电压 偏置电压大小为第一预定值。 第一驱动电路被配置为接收输入信号，第一偏置电压和浮置电压。 第二驱动电路被配置为接收输入信号，第二偏置电压和第三偏置电压，第一驱动电路和第二驱动电路被配置为产生驱动晶体管的输出信号。

公开(公告)号：US08391332B2

公开(公告)日：2013-03-05

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： 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： 用于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：US08379415B2

公开(公告)日：2013-02-19

申请号：US13350059

申请日：2012-01-13

申请人： Zhiliang Chen ,  Xiuhong Zhang ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang

发明人： Zhiliang Chen ,  Xiuhong Zhang ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang

IPC分类号： H02M3/335 ,  H02M3/156

CPC分类号： H02M3/33523 ,  H02M1/44

摘要： Switch mode power converter system and method thereof. The system includes one or more isolation boxes including at least a first isolation box, an input primary winding for receiving an input signal for the switch mode power converter system, and an output secondary winding for generating an output signal for the switch mode power converter system. The switch mode power converter system is configured to convert the input signal to the output signal. One of the input primary winding and the output secondary winding is substantially enclosed in the first isolation box, and the other of the input primary winding and the output secondary winding is not enclosed in the first isolation box. The first isolation box is conductively connected to a constant-voltage source.

摘要翻译： 开关电源转换器系统及其方法。 该系统包括一个或多个隔离箱，其包括至少第一隔离箱，用于接收开关模式功率转换器系统的输入信号的输入初级绕组和用于产生开关模式功率转换器系统的输出信号的输出次级绕组 。 开关模式功率转换器系统被配置为将输入信号转换成输出信号。 输入初级绕组和输出次级绕组中的一个基本上封装在第一隔离箱中，另一个输入初级绕组和输出次级绕组未封装在第一隔离箱中。 第一隔离箱与恒压源导电连接。

公开(公告)号：US08331112B2

公开(公告)日：2012-12-11

申请号：US12861147

申请日：2010-08-23

申请人： Xiaomin Huang ,  Lieyi Fang

发明人： Xiaomin Huang ,  Lieyi Fang

IPC分类号： H02M3/335 ,  H02H7/122

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0019

摘要： System and method for regulating an output voltage of a power conversion system. The system includes an error amplifier coupled to a capacitor. The error amplifier is configured to receive a reference voltage, a first voltage, and an adjustment current and to generate a compensation voltage with the capacitor. The first voltage is associated with a feedback voltage. Additionally, the system includes a current generator configured to receive the compensation voltage and generate the adjustment current and a first current, and a signal generator configured to receive the first current and a second current. The signal generator is further configured to receive a sensing voltage and to generate a modulation signal. Moreover, the system includes the gate driver directly or indirectly coupled to the signal generator and configured to generate a drive signal based on at least information associated with the modulation signal.

摘要翻译： 用于调节电力转换系统的输出电压的系统和方法。 该系统包括耦合到电容器的误差放大器。 误差放大器被配置为接收参考电压，第一电压和调整电流，并且产生与电容器的补偿电压。 第一电压与反馈电压相关联。 另外，该系统包括被配置为接收补偿电压并产生调整电流和第一电流的电流发生器，以及被配置为接收第一电流和第二电流的信号发生器。 信号发生器还被配置为接收感测电压并产生调制信号。 此外，该系统包括直接或间接地耦合到信号发生器并且被配置为基于至少基于与调制信号相关联的信息产生驱动信号的栅极驱动器。

公开(公告)号：US20120299571A1

公开(公告)日：2012-11-29

申请号：US13335119

申请日：2011-12-22

申请人： Yuan Lin ,  Jun Ye ,  Lieyi Fang

发明人： Yuan Lin ,  Jun Ye ,  Lieyi Fang

IPC分类号： G05F1/10

CPC分类号： H02M1/32 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10S323/901

摘要： System and method for providing stable control for power systems. According to an embodiment, the present invention provides an apparatus for providing one or more control signals for a power system. The apparatus includes an input terminal for receiving an electrical energy, which can be characterized by a first input voltage. The apparatus includes a control component that is configured to generate a first control signal based on at least information associated with the first input voltage. The apparatus additionally includes an output terminal for sending the first control signal. Moreover, the apparatus includes a timing component that is coupled to the control component. The control component is configured to process at least information associated with a first value of the first input voltage at a first time and a first reference voltage and to generate a second control signal.

摘要翻译： 为电力系统提供稳定控制的系统和方法。 根据实施例，本发明提供了一种用于为电力系统提供一个或多个控制信号的装置。 该装置包括用于接收电能的输入端子，其可以由第一输入电压表征。 该装置包括控制部件，其被配置为基于至少基于与第一输入电压相关联的信息生成第一控制信号。 该装置还包括用于发送第一控制信号的输出端子。 此外，该装置包括耦合到控制部件的定时部件。 控制部件被配置为至少处理与第一输入电压的第一值相关联的信息和第一参考电压并产生第二控制信号。

公开(公告)号：US08305776B2

公开(公告)日：2012-11-06

申请号：US12502866

申请日：2009-07-14

申请人： Lieyi Fang

发明人： Lieyi Fang

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0022 ,  H02M2001/0025

摘要： Switching-mode power conversion system and method thereof. The system includes a primary winding configured to receive an input voltage, an a secondary winding coupled to the primary winding and configured to, with one or more first components, generate, at an output terminal, an output voltage and an output current. Additionally, the system includes an auxiliary winding coupled to the secondary winding and configured to, with one or more second components, generate, at a first terminal, a detected voltage. Moreover, the system includes an error amplifier configured to receive the detected voltage and a first reference voltage and generate an amplified voltage based on at least information associated with a difference between the detected voltage and the first reference voltage. Also, the system includes a compensation component configured to receive the amplified voltage and generate a second reference voltage based on at least information associated with the amplified voltage.

摘要翻译： 开关电源转换系统及其方法。 该系统包括被配置为接收输入电压的初级绕组，耦合到初级绕组的次级绕组并且被配置成与一个或多个第一组件在输出端产生输出电压和输出电流。 另外，该系统包括耦合到次级绕组的辅助绕组，并且被配置成与一个或多个第二组件在第一端产生检测到的电压。 此外，该系统包括误差放大器，其被配置为接收检测到的电压和第一参考电压，并且至少基于与检测到的电压和第一参考电压之间的差异相关联的信息产生放大电压。 此外，该系统包括补偿组件，其被配置为接收放大的电压并基于至少与放大的电压相关联的信息产生第二参考电压。

公开(公告)号：US08125802B2

公开(公告)日：2012-02-28

申请号：US12055577

申请日：2008-03-26

申请人： Zhiliang Chen ,  Xiuhong Zhang ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang

发明人： Zhiliang Chen ,  Xiuhong Zhang ,  Jun Ye ,  Shifeng Zhao ,  Lieyi Fang

IPC分类号： H02M3/335 ,  H02M3/156

CPC分类号： H02M3/33523 ,  H02M1/44

摘要： Switch mode power converter system and method thereof. The system includes one or more isolation boxes including at least a first isolation box, an input primary winding for receiving an input signal for the switch mode power converter system, and an output secondary winding for generating an output signal for the switch mode power converter system. The switch mode power converter system is configured to convert the input signal to the output signal. One of the input primary winding and the output secondary winding is substantially enclosed in the first isolation box, and the other of the input primary winding and the output secondary winding is not enclosed in the first isolation box. The first isolation box is conductively connected to a constant-voltage source.

摘要翻译： 开关电源转换器系统及其方法。 该系统包括一个或多个隔离箱，其包括至少第一隔离箱，用于接收开关模式功率转换器系统的输入信号的输入初级绕组和用于产生开关模式功率转换器系统的输出信号的输出次级绕组 。 开关模式功率转换器系统被配置为将输入信号转换成输出信号。 输入初级绕组和输出次级绕组中的一个基本上封装在第一隔离箱中，另一个输入初级绕组和输出次级绕组未封装在第一隔离箱中。 第一隔离箱与恒压源导电连接。

公开(公告)号：US20120013321A1

公开(公告)日：2012-01-19

申请号：US12861147

申请日：2010-08-23

申请人： Xiaomin Huang ,  Lieyi Fang

发明人： Xiaomin Huang ,  Lieyi Fang

IPC分类号： G05F1/10

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0019

摘要： System and method for regulating an output voltage of a power conversion system. The system includes an error amplifier coupled to a capacitor. The error amplifier is configured to receive a reference voltage, a first voltage, and an adjustment current and to generate a compensation voltage with the capacitor. The first voltage is associated with a feedback voltage. Additionally, the system includes a current generator configured to receive the compensation voltage and generate the adjustment current and a first current, and a signal generator configured to receive the first current and a second current. The signal generator is further configured to receive a sensing voltage and to generate a modulation signal. Moreover, the system includes the gate driver directly or indirectly coupled to the signal generator and configured to generate a drive signal based on at least information associated with the modulation signal.

摘要翻译： 用于调节电力转换系统的输出电压的系统和方法。 该系统包括耦合到电容器的误差放大器。 误差放大器被配置为接收参考电压，第一电压和调整电流，并且产生与电容器的补偿电压。 第一电压与反馈电压相关联。 另外，该系统包括被配置为接收补偿电压并产生调整电流和第一电流的电流发生器，以及被配置为接收第一电流和第二电流的信号发生器。 信号发生器还被配置为接收感测电压并产生调制信号。 此外，该系统包括直接或间接地耦合到信号发生器并且被配置为基于至少基于与调制信号相关联的信息产生驱动信号的栅极驱动器。