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：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。