公开(公告)号：US20130033905A1

公开(公告)日：2013-02-07

申请号：US13215028

申请日：2011-08-22

申请人： Yuan Lin ,  Zhenglan Xia ,  Xiuhong Zhang ,  Lieyi Fang

发明人： Yuan Lin ,  Zhenglan Xia ,  Xiuhong Zhang ,  Lieyi Fang

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

摘要： System and method for regulating a power converter. The system includes a first comparator configured to receive a first input signal and a second input signal and generate a first comparison signal based on at least information associated with the first input signal and the second input signal, a pulse-width-modulation generator configured to receive at least the first comparison signal and generate a modulation signal based on at least information associated with the first comparison signal, a driver component configured to receive the modulation signal and output a drive signal to a switch to adjust a primary current flowing through a primary winding of the power converter, and a voltage-change-rate detection component configured to sample the feedback signal to generate a first sampled signal for a first modulation period and to sample the feedback signal to generate a second sampled signal for a second modulation period.

公开(公告)号：US20130033236A1

公开(公告)日：2013-02-07

申请号：US13367097

申请日：2012-02-06

申请人： Miao Li ,  Lieyi Fang

发明人： Miao Li ,  Lieyi Fang

IPC分类号： H03L5/00 ,  H02J7/00

CPC分类号： H02J7/0036 ,  H02J7/0047 ,  H02J7/0063 ,  H02J7/345 ,  H02M7/219

摘要： System and method for discharging a capacitor. An example system includes a signal detector and a discharge control component. The signal detector is configured to receive an input signal and generate a detection signal based on at least information associated with the input signal, the input signal being associated with an alternate current signal received by a capacitor including a first capacitor terminal and a second capacitor terminal. The discharge control component configured to receive at least the detection signal and generate an output signal to discharge the capacitor if the detection signal satisfies one or more conditions.

摘要翻译： 用于放电电容器的系统和方法。 示例系统包括信号检测器和放电控制部件。 信号检测器被配置为接收输入信号并基于至少与输入信号相关联的信息产生检测信号，该输入信号与由包括第一电容器端子和第二电容器端子的电容器接收的交流电流信号相关联 。 所述放电控制部件被配置为如果所述检测信号满足一个或多个条件，则至少接收所述检测信号并产生输出信号以放电所述电容器。

公开(公告)号：US08344715B2

公开(公告)日：2013-01-01

申请号：US12850537

申请日：2010-08-04

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： G05F1/575

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  H03K3/0231 ,  H04Q2213/1308 ,  H04Q2213/13098 ,  H04Q2213/1332 ,  Y02B70/16

摘要： System and method for providing frequency control to a power converter. The system includes a controller configured to receive a load signal and generate a first control signal. The load signal indicates an output load for a power converter. Additionally, the system includes a signal generator configured to receive the first control signal and generates at least a first output signal. The first output signal is associated with a first signal strength and a first frequency. The first frequency is inversely proportional to a sum of a first time period, a second time period, and a third time period. The first signal strength increases with the time during the first time period, the first signal strength decreases with the time during the second time period, and the first signal strength is constant with respect to the time during the third time period.

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接收负载信号并产生第一控制信号的控制器。 负载信号表示电源转换器的输出负载。 另外，该系统包括被配置为接收第一控制信号并产生至少第一输出信号的信号发生器。 第一输出信号与第一信号强度和第一频率相关联。 第一频率与第一时间段，第二时间段和第三时间段的和成反比。 第一信号强度随着第一时间段期间的时间增加，第一信号强度随着第二时间段期间的时间而减小，并且第一信号强度相对于第三时间段内的时间是恒定的。

公开(公告)号：US08148909B2

公开(公告)日：2012-04-03

申请号：US12874096

申请日：2010-09-01

申请人： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

发明人： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

IPC分类号： H05B41/16

CPC分类号： H05B41/282 ,  H05B41/2853

摘要： 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.

摘要翻译： 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：US20110204865A1

公开(公告)日：2011-08-25

申请号：US12850537

申请日：2010-08-04

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： G05F1/10

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  H03K3/0231 ,  H04Q2213/1308 ,  H04Q2213/13098 ,  H04Q2213/1332 ,  Y02B70/16

摘要： System and method for providing frequency control to a power converter. The system includes a controller configured to receive a load signal and generate a first control signal. The load signal indicates an output load for a power converter. Additionally, the system includes a signal generator configured to receive the first control signal and generates at least a first output signal. The first output signal is associated with a first signal strength and a first frequency. The first frequency is inversely proportional to a sum of a first time period, a second time period, and a third time period. The first signal strength increases with the time during the first time period, the first signal strength decreases with the time during the second time period, and the first signal strength is constant with respect to the time during the third time period.

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接收负载信号并产生第一控制信号的控制器。 负载信号表示电源转换器的输出负载。 另外，该系统包括被配置为接收第一控制信号并产生至少第一输出信号的信号发生器。 第一输出信号与第一信号强度和第一频率相关联。 第一频率与第一时间段，第二时间段和第三时间段的和成反比。 第一信号强度随着第一时间段期间的时间增加，第一信号强度随着第二时间段期间的时间而减小，并且第一信号强度相对于第三时间段内的时间是恒定的。

公开(公告)号：US20100315148A1

公开(公告)日：2010-12-16

申请号：US12537964

申请日：2009-08-07

申请人： Liqiang Zhu ,  Lieyi Fang

发明人： Liqiang Zhu ,  Lieyi Fang

IPC分类号： H03K3/00

CPC分类号： H03K3/01 ,  H03K5/1565 ,  H03K7/08 ,  H03M1/56 ,  H05B33/0815

摘要： Oscillator system and method thereof. The oscillator system includes a first voltage-to-current converter configured to receive a first voltage and generate a first current based on at least information associated with the first voltage, and a second voltage-to-current converter configured to receive a second voltage and generate a second current based on at least information associated with the second voltage. Additionally, the oscillator system further includes a current-mode N-bit digital-to-analog converter configured to receive at least the second current and a first clock signal and to generate a third current based on at least information associated with the second current and the first clock signal. N is a first integer. The first clock signal is associated with a first clock frequency corresponding to a first clock period. Moreover, the oscillator system further includes a current comparator coupled to the first voltage-to-current converter and the current-mode N-bit digital-to-analog converter.

摘要翻译： 振荡器系统及其方法。 振荡器系统包括第一电压 - 电流转换器，其被配置为接收第一电压并基于至少与第一电压相关联的信息产生第一电流，以及第二电压 - 电流转换器，被配置为接收第二电压和 至少基于与第二电压相关联的信息生成第二电流。 此外，振荡器系统还包括电流模式N位数模转换器，其被配置为至少接收第二电流和第一时钟信号，并且至少基于与第二电流相关联的信息产生第三电流，以及 第一个时钟信号。 N是第一个整数。 第一时钟信号与对应于第一时钟周期的第一时钟频率相关联。 此外，振荡器系统还包括耦合到第一电压 - 电流转换器和电流模式N位数模转换器的电流比较器。

公开(公告)号：US07738227B2

公开(公告)日：2010-06-15

申请号：US12125033

申请日：2008-05-21

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

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

IPC分类号： H02H7/00

CPC分类号： H02M3/33507 ,  H02M1/32

摘要： System and method for protecting a power converter. The system includes a first comparator configured to receive a threshold signal and a first signal and to generate a comparison signal. The first signal is a sum of a second signal and a third signal, and the third signal is associated with an input current for a power converter. 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 the input current for the power converter. An amplitude for the first signal becomes larger if an amplitude for the input voltage becomes larger. The second signal is generated by receiving an input voltage for the power converter, converting the received input voltage to a fourth signal, and converting the fourth signal to the second 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阈值信号和第一信号并产生比较信号的第一比较器。 第一信号是第二信号和第三信号的和，并且第三信号与功率转换器的输入电流相关联。 另外，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。 如果输入电压的幅度变大，则第一信号的振幅变大。 通过接收功率转换器的输入电压，将接收到的输入电压转换为第四信号，并将第四信号转换为第二信号，产生第二信号。

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：US07706162B2

公开(公告)日：2010-04-27

申请号：US12363468

申请日：2009-01-30

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：US07679938B2

公开(公告)日：2010-03-16

申请号：US12273362

申请日：2008-11-18

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

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

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

摘要： System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first voltage and a second voltage, to process information associated with the first voltage and the second voltage, to determine a signal based on at least information associated with the first voltage and the second voltage, and to send the signal to a switch for a power converter. The switch is regulated based on at least information associated with the signal. The signal processing component is further configured to determine the signal to be associated a first mode, if the first voltage is higher than a first threshold.

摘要翻译： 提供开关电源控制的系统和方法。 根据实施例，本发明提供了一种用于调节功率转换器的系统。 该系统包括信号处理部件，其被配置为接收第一电压和第二电压，以处理与第一电压和第二电压相关联的信息，以至少基于与第一电压和第二电压相关联的信息来确定信号 电压，并将信号发送到电源转换器的开关。 至少基于与信号相关联的信息来调节开关。 信号处理部件还被配置为如果第一电压高于第一阈值，则确定与第一模式相关联的信号。