公开(公告)号：US20110148324A1

公开(公告)日：2011-06-23

申请号：US12698829

申请日：2010-02-02

申请人： Hongyue Du ,  Xinfeng Liu ,  Wei Zhang ,  Jiusheng Zhang ,  Hongbo Zhang

发明人： Hongyue Du ,  Xinfeng Liu ,  Wei Zhang ,  Jiusheng Zhang ,  Hongbo Zhang

IPC分类号： H05B41/36

CPC分类号： H05B33/0812 ,  Y02B20/345

摘要： A control circuit for a switched mode power supply includes a transconductance amplifier circuit for receiving a voltage signal related to a current from an input of the power supply and producing a first signal, an analog signal processor coupled to the amplifier circuit for receiving the first signal and a second signal from the input of the power supply and a third signal from an output of the power supply. The analog signal processor is configured to produce a fourth signal as a function of the first, the second, and the third signals. An adder circuit is coupled to the fourth signal and a dimmer control signal, and the adder circuit is configured to output a fifth signal. A comparator circuit is coupled to the adder circuit for providing a control signal to a power transistor that controls current flow in the power supply based on comparison of the fifth signal and a reference signal.

摘要翻译： 用于开关模式电源的控制电路包括跨导放大器电路，用于从电源的输入端接收与电流相关的电压信号并产生第一信号;耦合到放大器电路的模拟信号处理器，用于接收第一信号 以及来自电源的输入的第二信号和来自电源的输出的第三信号。 模拟信号处理器被配置为产生作为第一信号，第二信号和第三信号的函数的第四信号。 加法器电路耦合到第四信号和调光控制信号，并且加法器电路被配置为输出第五信号。 比较器电路耦合到加法器电路，用于根据第五信号和参考信号的比较，向控制电源中的电流的功率晶体管提供控制信号。

公开(公告)号：US08344656B2

公开(公告)日：2013-01-01

申请号：US12698829

申请日：2010-02-02

申请人： Hongyue Du ,  Xinfeng Liu ,  Wei Zhang ,  Jiusheng Zhang ,  Hongbo Zhang

发明人： Hongyue Du ,  Xinfeng Liu ,  Wei Zhang ,  Jiusheng Zhang ,  Hongbo Zhang

IPC分类号： H05B37/02

CPC分类号： H05B33/0812 ,  Y02B20/345

摘要： A control circuit for a switched mode power supply includes a transconductance amplifier circuit for receiving a voltage signal related to a current from an input of the power supply and producing a first signal, an analog signal processor coupled to the amplifier circuit for receiving the first signal and a second signal from the input of the power supply and a third signal from an output of the power supply. The analog signal processor is configured to produce a fourth signal as a function of the first, the second, and the third signals. An adder circuit is coupled to the fourth signal and a dimmer control signal, and the adder circuit is configured to output a fifth signal. A comparator circuit is coupled to the adder circuit for providing a control signal to a power transistor that controls current flow in the power supply based on comparison of the fifth signal and a reference signal.

摘要翻译： 用于开关模式电源的控制电路包括跨导放大器电路，用于从电源的输入端接收与电流相关的电压信号并产生第一信号;耦合到放大器电路的模拟信号处理器，用于接收第一信号 以及来自电源的输入的第二信号和来自电源的输出的第三信号。 模拟信号处理器被配置为产生作为第一信号，第二信号和第三信号的函数的第四信号。 加法器电路耦合到第四信号和调光控制信号，并且加法器电路被配置为输出第五信号。 比较器电路耦合到加法器电路，用于根据第五信号和参考信号的比较，向控制电源中的电流的功率晶体管提供控制信号。