公开(公告)号：US07852640B2

公开(公告)日：2010-12-14

申请号：US12684721

申请日：2010-01-08

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.

公开(公告)号：US07781984B2

公开(公告)日：2010-08-24

申请号：US12123345

申请日：2008-05-19

申请人： Jianfeng Huang ,  Liqiang Zhu ,  Zhen Zhu ,  Lieyi Fang

发明人： Jianfeng Huang ,  Liqiang Zhu ,  Zhen Zhu ,  Lieyi Fang

IPC分类号： H05B37/02

CPC分类号： H05B41/39 ,  H05B41/282

摘要： System and method for processing analog voltage for cold-cathode fluorescent lamp. The system includes a voltage-to-current converter configured to receive an input analog voltage signal and generate a first current signal, and a current processing component configured to receive the first current signal and a predetermined current and generate a second current signal. Additionally, the system includes a current-to-voltage converter configured to receive the second current signal and generate an output analog voltage signal, and a dimming controller configured to receive the output analog voltage signal and generate a control signal for driving at least a cold-cathode fluorescent lamp. The voltage-to-current converter, the current processing component, and the current-to-voltage converter are configured to be biased between a first power supply voltage level and a second power supply voltage level.

摘要翻译： 冷阴极荧光灯模拟电压处理系统及方法。 该系统包括被配置为接收输入模拟电压信号并产生第一电流信号的电压 - 电流转换器，以及被配置为接收第一电流信号和预定电流并产生第二电流信号的电流处理部件。 另外，该系统包括被配置为接收第二电流信号并产生输出模拟电压信号的电流 - 电压转换器，以及调光控制器，被配置为接收输出模拟电压信号并产生用于至少驱动冷的控制信号 阴极荧光灯。 电压 - 电流转换器，当前处理组件和电流 - 电压转换器被配置为在第一电源电压电平和第二电源电压电平之间被偏置。

公开(公告)号：US20100172160A1

公开(公告)日：2010-07-08

申请号：US12684721

申请日：2010-01-08

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。

公开(公告)号：US20100165676A1

公开(公告)日：2010-07-01

申请号：US12690808

申请日：2010-01-20

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： H02H7/10

CPC分类号： H02H7/1203 ,  H02H7/12

摘要： System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first 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 adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.

摘要翻译： 保护电源转换器的系统和方法。 一种系统包括被配置为产生阈值信号的阈值发生器，以及配置成接收阈值信号和第一信号并产生比较信号的第一比较器。 第一个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调整功率转换器的输入电流。 阈值信号与作为时间的函数的阈值幅度相关联。 阈值幅度在第一周期期间以第一斜率随时间增加，并且阈值幅度在第二周期期间以第二斜率随时间增加。 第一斜坡和第二斜坡不同。

公开(公告)号：US07684220B2

公开(公告)日：2010-03-23

申请号：US11752926

申请日：2007-05-24

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： H02H7/122

CPC分类号： H02H7/1203 ,  H02H7/12

摘要： System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first 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 adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.

摘要翻译： 保护电源转换器的系统和方法。 一种系统包括被配置为产生阈值信号的阈值发生器，以及配置成接收阈值信号和第一信号并产生比较信号的第一比较器。 第一个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调整功率转换器的输入电流。 阈值信号与作为时间的函数的阈值幅度相关联。 阈值幅度在第一周期期间以第一斜率随时间增加，并且阈值幅度在第二周期期间以第二斜率随时间增加。 第一斜坡和第二斜坡不同。

公开(公告)号：US07589574B2

公开(公告)日：2009-09-15

申请号：US11870378

申请日：2007-10-10

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：US07573207B2

公开(公告)日：2009-08-11

申请号：US11871123

申请日：2007-10-11

申请人： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

发明人： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

IPC分类号： G05F1/00

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：US20090067204A1

公开(公告)日：2009-03-12

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： H02M3/24

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。

公开(公告)号：US20080297965A1

公开(公告)日：2008-12-04

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：US20080246444A1

公开(公告)日：2008-10-09

申请号：US11750309

申请日：2007-05-17

申请人： Yunqi Shao ,  Yuan Lin ,  Jun Ye ,  Lieyi Fang

发明人： Yunqi Shao ,  Yuan Lin ,  Jun Ye ,  Lieyi Fang

IPC分类号： G05F5/02

CPC分类号： H02M1/4225 ,  Y02B70/126

摘要： System and method for power controller. According to an embodiment, the present invention provides a power factor correction apparatus. The apparatus includes a multiplier component that is configured to process a first input signal and a second input signal. For example, the first input signal is associated with a rectified alternating current signal, and the second input signal is associated with an error signal. The multiplier component further is configured to generate a first output signal based on the first input signal and the second input signal. The apparatus also includes a comparator component that is configured to process a third input signal and fourth input signal. The third input signal is associated with the first output signal. The comparator component is further configured to generate a second output signal based on the third input signal and the fourth input signal.

摘要翻译： 电源控制器的系统和方法。 根据实施例，本发明提供一种功率因数校正装置。 该装置包括被配置为处理第一输入信号和第二输入信号的乘法器部件。 例如，第一输入信号与整流交流信号相关联，第二输入信号与误差信号相关联。 乘法器组件还被配置为基于第一输入信号和第二输入信号产生第一输出信号。 该装置还包括比较器部件，其被配置为处理第三输入信号和第四输入信号。 第三输入信号与第一输出信号相关联。 比较器部件还被配置为基于第三输入信号和第四输入信号产生第二输出信号。