公开(公告)号：US09112426B2

公开(公告)日：2015-08-18

申请号：US13050236

申请日：2011-03-17

申请人： Shihai Zhu ,  Zeqiang Chen ,  Xuegang Ren ,  Yajiang Zhu

发明人： Shihai Zhu ,  Zeqiang Chen ,  Xuegang Ren ,  Yajiang Zhu

IPC分类号： H05B41/282 ,  H02M1/42 ,  H05B33/08

CPC分类号： H02M3/33507 ,  H02M1/4258 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/347 ,  Y02B70/126

摘要： A switch mode power supply (SMPS) system includes a rectifying circuit for coupling to an AC input voltage and a transformer having a primary winding for coupling to the rectifying circuit and a secondary winding coupled to the primary winding. The system also has a power switch coupled to the primary winding and a control circuit coupled to the power switch. The control circuit is configured to control current flow in the primary winding such that an envelop waveform formed by peak points of current pulses are in phase with the magnitude of the AC input voltage. Moreover, the SMPS system is configured to provide a constant average output current.

摘要翻译： 开关模式电源（SMPS）系统包括用于耦合到AC输入电压的整流电路和具有用于耦合到整流电路的初级绕组和耦合到初级绕组的次级绕组的变压器。 该系统还具有耦合到初级绕组的功率开关和耦合到功率开关的控制电路。 控制电路被配置为控制初级绕组中的电流流动，使得由电流脉冲的峰值点形成的包络波形与AC输入电压的大小相同。 此外，SMPS系统被配置为提供恒定的平均输出电流。

公开(公告)号：US20120056551A1

公开(公告)日：2012-03-08

申请号：US13050236

申请日：2011-03-17

申请人： Shihai Zhu ,  Zeqiang Chen ,  Xuegang Ren ,  Yajiang Zhu

发明人： Shihai Zhu ,  Zeqiang Chen ,  Xuegang Ren ,  Yajiang Zhu

IPC分类号： H05B41/282

CPC分类号： H02M3/33507 ,  H02M1/4258 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/347 ,  Y02B70/126

摘要： A switch mode power supply (SMPS) system includes a rectifying circuit for coupling to an AC input voltage and a transformer having a primary winding for coupling to the rectifying circuit and a secondary winding coupled to the primary winding. The system also has a power switch coupled to the primary winding and a control circuit coupled to the power switch. The control circuit is configured to control current flow in the primary winding such that an envelop waveform formed by peak points of current pulses are in phase with the magnitude of the AC input voltage. Moreover, the SMPS system is configured to provide a constant average output current.

摘要翻译： 开关模式电源（SMPS）系统包括用于耦合到AC输入电压的整流电路和具有用于耦合到整流电路的初级绕组和耦合到初级绕组的次级绕组的变压器。 该系统还具有耦合到初级绕组的功率开关和耦合到功率开关的控制电路。 控制电路被配置为控制初级绕组中的电流流动，使得由电流脉冲的峰值点形成的包络波形与AC输入电压的大小相同。 此外，SMPS系统被配置为提供恒定的平均输出电流。

公开(公告)号：US20130148387A1

公开(公告)日：2013-06-13

申请号：US13338857

申请日：2011-12-28

申请人： Xuegang Ren ,  Jianhua Duan ,  Siyuan Xu ,  Na Liu ,  Zeqiang Chen

发明人： Xuegang Ren ,  Jianhua Duan ,  Siyuan Xu ,  Na Liu ,  Zeqiang Chen

IPC分类号： H02M3/335

CPC分类号： H02M1/36 ,  H02M3/33507 ,  H02M2001/0025

摘要： A switch-mode power supply (SMPS) includes a transformer having a primary winding coupled to a power switch, a secondary winding for providing an output of the power supply, and a controller. The controller includes a first input terminal for receiving a current sensing signal related to a current in the primary winding, a second input terminal for receiving a feedback signal related to a current in the secondary winding, and an output terminal for providing a control signal to turn on and off the power switch. When the feedback signal is higher than a first reference voltage, the controller is configured to cause the SMPS to maintain a constant output current at a first current magnitude. When the feedback signal is lower than the first reference voltage, the controller is configured to cause the SMPS to provide a second output current at a second current magnitude higher than the first current magnitude.

摘要翻译： 开关电源（SMPS）包括具有耦合到功率开关的初级绕组的变压器，用于提供电源的输出的次级绕组和控制器。 该控制器包括用于接收与初级绕组中的电流相关的电流感测信号的第一输入端子，用于接收与次级绕组中的电流有关的反馈信号的第二输入端，以及用于向第二输入端提供控制信号 打开和关闭电源开关。 当反馈信号高于第一参考电压时，控制器被配置为使得SMPS在第一电流幅度下保持恒定的输出电流。 当反馈信号低于第一参考电压时，控制器被配置为使得SMPS以比第一电流幅度高的第二电流幅度提供第二输出电流。

公开(公告)号：US08923021B2

公开(公告)日：2014-12-30

申请号：US13338857

申请日：2011-12-28

申请人： Xuegang Ren ,  Jianhua Duan ,  Siyuan Xu ,  Na Liu ,  Zeqiang Chen

发明人： Xuegang Ren ,  Jianhua Duan ,  Siyuan Xu ,  Na Liu ,  Zeqiang Chen

IPC分类号： H02M3/335

CPC分类号： H02M1/36 ,  H02M3/33507 ,  H02M2001/0025

摘要： A switch-mode power supply (SMPS) includes a transformer having a primary winding coupled to a power switch, a secondary winding for providing an output of the power supply, and a controller. The controller includes a first input terminal for receiving a current sensing signal related to a current in the primary winding, a second input terminal for receiving a feedback signal related to a current in the secondary winding, and an output terminal for providing a control signal to turn on and off the power switch. When the feedback signal is higher than a first reference voltage, the controller is configured to cause the SMPS to maintain a constant output current at a first current magnitude. When the feedback signal is lower than the first reference voltage, the controller is configured to cause the SMPS to provide a second output current at a second current magnitude higher than the first current magnitude.

摘要翻译： 开关电源（SMPS）包括具有耦合到功率开关的初级绕组的变压器，用于提供电源的输出的次级绕组和控制器。 该控制器包括用于接收与初级绕组中的电流相关的电流感测信号的第一输入端子，用于接收与次级绕组中的电流有关的反馈信号的第二输入端，以及用于向第二输入端提供控制信号 打开和关闭电源开关。 当反馈信号高于第一参考电压时，控制器被配置为使得SMPS在第一电流幅度下保持恒定的输出电流。 当反馈信号低于第一参考电压时，控制器被配置为使得SMPS以比第一电流幅度高的第二电流幅度提供第二输出电流。

公开(公告)号：US08971060B2

公开(公告)日：2015-03-03

申请号：US12648799

申请日：2009-12-29

申请人： Quanqing Wu ,  Xuegang Ren ,  Zhao Xiangyuan

发明人： Quanqing Wu ,  Xuegang Ren ,  Zhao Xiangyuan

IPC分类号： H02M3/335 ,  H03K7/08 ,  H02M1/00

CPC分类号： H02M3/33523 ,  H02M2001/0035 ,  H03K7/08 ,  Y02B70/16

摘要： A controller for a switched mode power supply (SMPS) is provided. The SMPS is equipped with a transformer having a primary side winding, a secondary winding, and an auxiliary winding. The controller includes a detection circuit for detecting a transition from a first output load condition to a second output load condition of the SMPS and a control circuit coupled to the detection circuit and being configured to output one or more control signals in response to the detected output load transition. Depending on the embodiment, the one or more control signals include a first control signal for turning on a power switch to cause a current flow in a primary winding of the SMPS and/or one or more second control signals for turning off one or more functional circuit blocks in the controller.

摘要翻译： 提供了一种用于开关电源（SMPS）的控制器。 SMPS配备有具有初级侧绕组，次级绕组和辅助绕组的变压器。 控制器包括检测电路，用于检测从SMPS的第一输出负载状态转换到第二输出负载状态;以及控制电路，耦合到检测电路，并被配置为响应于检测到的输出而输出一个或多个控制信号 负载转换。 根据实施例，一个或多个控制信号包括用于接通电源开关以在SMPS的初级绕组中引起电流流动的第一控制信号和/或一个或多个第二控制信号以关闭一个或多个功能 控制器中的电路块。

公开(公告)号：US20120056548A1

公开(公告)日：2012-03-08

申请号：US13224325

申请日：2011-09-01

申请人： Jianhua Duan ,  Xuegang Ren ,  Na Liu

发明人： Jianhua Duan ,  Xuegang Ren ,  Na Liu

IPC分类号： H05B37/02 ,  G05F5/00

CPC分类号： H05B33/0851 ,  H05B33/0815 ,  H05B33/0818

摘要： A system for driving an LED (light-emitting diode) lamp includes a dimmer circuit coupled to a line input voltage for varying a magnitude of an input voltage and a transformer having a primary winding, a secondary winding, and one or more auxiliary windings, the primary winding coupled to the dimmer circuit. The system also includes an output rectifying circuit coupled to the secondary winding for providing an output current to the LED lamp and a power switch coupled to the primary winding for controlling a current flow in the primary winding. The system further includes a controller having a comparator and a capacitor for providing a control signal to control the power switch for regulating the output current. The controller coupled to the dimmer circuit for receiving an average input voltage signal from the dimmer circuit, wherein the control signal is characterized by a duty cycle that is determined by a ratio of a charging current to a discharging current of the capacitor, and the ratio is related to the average input voltage signal from the dimmer circuit.

摘要翻译： 用于驱动LED（发光二极管）灯的系统包括耦合到用于改变输入电压的大小的线路输入电压的调光器电路和具有初级绕组，次级绕组和一个或多个辅助绕组的变压器， 耦合到调光器电路的初级绕组。 该系统还包括耦合到次级绕组的输出整流电路，用于向LED灯提供输出电流，以及耦合到初级绕组的功率开关，用于控制初级绕组中的电流。 该系统还包括具有比较器和电容器的控制器，用于提供控制信号以控制用于调节输出电流的功率开关。 所述控制器耦合到所述调光器电路，用于接收来自所述调光器电路的平均输入电压信号，其中所述控制信号的特征在于由充电电流与所述电容器的放电电流的比率确定的占空比， 与来自调光电路的平均输入电压信号有关。

公开(公告)号：US20110019446A1

公开(公告)日：2011-01-27

申请号：US12648799

申请日：2009-12-29

申请人： Quanqing Wu ,  Xuegang Ren ,  Xiangyuan Zhao

发明人： Quanqing Wu ,  Xuegang Ren ,  Xiangyuan Zhao

IPC分类号： H02M7/44

CPC分类号： H02M3/33523 ,  H02M2001/0035 ,  H03K7/08 ,  Y02B70/16

摘要： A controller for a switched mode power supply (SMPS) is provided. The SMPS is equipped with a transformer having a primary side winding, a secondary winding, and an auxiliary winding. The controller includes a detection circuit for detecting a transition from a first output load condition to a second output load condition of the SMPS and a control circuit coupled to the detection circuit and being configured to output one or more control signals in response to the detected output load transition. Depending on the embodiment, the one or more control signals include a first control signal for turning on a power switch to cause a current flow in a primary winding of the SMPS and/or one or more second control signals for turning off one or more functional circuit blocks in the controller.

摘要翻译： 提供了一种用于开关电源（SMPS）的控制器。 SMPS配备有具有初级侧绕组，次级绕组和辅助绕组的变压器。 控制器包括检测电路，用于检测从SMPS的第一输出负载状态转换到第二输出负载状态;以及控制电路，耦合到检测电路，并被配置为响应于检测到的输出而输出一个或多个控制信号 负载转换。 根据实施例，一个或多个控制信号包括用于接通电源开关以在SMPS的初级绕组中引起电流流动的第一控制信号和/或一个或多个第二控制信号以关闭一个或多个功能 控制器中的电路块。

公开(公告)号：US08878448B2

公开(公告)日：2014-11-04

申请号：US13224325

申请日：2011-09-01

申请人： Jianhua Duan ,  Xuegang Ren ,  Na Liu

发明人： Jianhua Duan ,  Xuegang Ren ,  Na Liu

IPC分类号： H05B37/00 ,  H05B33/08

CPC分类号： H05B33/0851 ,  H05B33/0815 ,  H05B33/0818

摘要： A system for driving an LED (light-emitting diode) lamp includes a dimmer circuit coupled to a line input voltage for varying a magnitude of an input voltage and a transformer having a primary winding, a secondary winding, and one or more auxiliary windings, the primary winding coupled to the dimmer circuit. The system also includes an output rectifying circuit coupled to the secondary winding for providing an output current to the LED lamp and a power switch coupled to the primary winding for controlling a current flow in the primary winding. The system further includes a controller having a comparator and a capacitor for providing a control signal to control the power switch for regulating the output current. The controller coupled to the dimmer circuit for receiving an average input voltage signal from the dimmer circuit, wherein the control signal is characterized by a duty cycle that is determined by a ratio of a charging current to a discharging current of the capacitor, and the ratio is related to the average input voltage signal from the dimmer circuit.

摘要翻译： 用于驱动LED（发光二极管）灯的系统包括耦合到用于改变输入电压的大小的线路输入电压的调光器电路和具有初级绕组，次级绕组和一个或多个辅助绕组的变压器， 耦合到调光器电路的初级绕组。 该系统还包括耦合到次级绕组的输出整流电路，用于向LED灯提供输出电流，以及耦合到初级绕组的功率开关，用于控制初级绕组中的电流。 该系统还包括具有比较器和电容器的控制器，用于提供控制信号以控制用于调节输出电流的功率开关。 所述控制器耦合到所述调光器电路，用于接收来自所述调光器电路的平均输入电压信号，其中所述控制信号的特征在于由充电电流与所述电容器的放电电流的比率确定的占空比， 与来自调光电路的平均输入电压信号有关。