公开(公告)号：US20120112795A1

公开(公告)日：2012-05-10

申请号：US13288536

申请日：2011-11-03

申请人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

发明人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

IPC分类号： H03K5/22

CPC分类号： H02M3/33507 ,  H02M2001/0025

摘要： A switching mode power supply with improved peak current control is disclosed. A varying reference signal is adopted to limit the peak current in the energy storage component. The varying reference signal is an exponential function of a time period when a power switch is ON, wherein the power switch is coupled to the energy storage component. The varying reference signal may be generated by a circuit comprising a RC circuit and one or several voltage sources.

摘要翻译： 公开了具有改进的峰值电流控制的开关模式电源。 采用变化的参考信号来限制能量存储部件中的峰值电流。 变化的参考信号是电源开关导通的时间段的指数函数，其中功率开关耦合到能量存储部件。 变化的参考信号可以由包括RC电路和一个或多个电压源的电路产生。

公开(公告)号：US20120113684A1

公开(公告)日：2012-05-10

申请号：US13289274

申请日：2011-11-04

申请人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

发明人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

IPC分类号： H02M3/335

CPC分类号： H02M3/335

摘要： A compensation circuit and method for constant current regulation of switching mode power supply are disclosed. The ringing waveform of a feedback signal, indicative of the output current of the power supply, causes error. To eliminate the error, a current source charges a capacitor in response to a demagnetizing oscillation signal indicative of the error caused by the ringing waveform of the feedback signal. The voltage across the capacitor is compared to a reference signal to generate a more accurate signal indicative of the conductive time of a secondary diode in a secondary winding of the switching mode power supply. This more accurate signal is inputted to a logic circuit to generate a constant current control signal to control a power switch of the power supply.

摘要翻译： 公开了一种用于开关电源的恒流调节的补偿电路和方法。 指示电源的输出电流的反馈信号的振铃波形引起误差。 为了消除误差，电流源响应于指示由反馈信号的振铃波形引起的误差的去磁振荡信号对电容器充电。 将电容器两端的电压与参考信号进行比较，以产生指示开关模式电源的次级绕组中次级二极管的导通时间的更准确的信号。 该更准确的信号被输入到逻辑电路以产生恒定电流控制信号以控制电源的电源开关。

公开(公告)号：US08749997B2

公开(公告)日：2014-06-10

申请号：US13288536

申请日：2011-11-03

申请人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

发明人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0025

摘要： A switching mode power supply with improved peak current control is disclosed. A varying reference signal is adopted to limit the peak current in the energy storage component. The varying reference signal is an exponential function of a time period when a power switch is ON, wherein the power switch is coupled to the energy storage component. The varying reference signal may be generated by a circuit comprising a RC circuit and one or several voltage sources.

摘要翻译： 公开了具有改进的峰值电流控制的开关模式电源。 采用变化的参考信号来限制能量存储部件中的峰值电流。 变化的参考信号是电源开关导通的时间段的指数函数，其中功率开关耦合到能量存储部件。 变化的参考信号可以由包括RC电路和一个或多个电压源的电路产生。

公开(公告)号：US08593841B2

公开(公告)日：2013-11-26

申请号：US13289274

申请日：2011-11-04

申请人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

发明人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

IPC分类号： H02J3/12 ,  G05F1/00 ,  H02M3/335

CPC分类号： H02M3/335

摘要： A compensation circuit and method for constant current regulation of switching mode power supply are disclosed. The ringing waveform of a feedback signal, indicative of the output current of the power supply, causes error. To eliminate the error, a current source charges a capacitor in response to a demagnetizing oscillation signal indicative of the error caused by the ringing waveform of the feedback signal. The voltage across the capacitor is compared to a reference signal to generate a more accurate signal indicative of the conductive time of a secondary diode in a secondary winding of the switching mode power supply. This more accurate signal is inputted to a logic circuit to generate a constant current control signal to control a power switch of the power supply.

摘要翻译： 公开了一种用于开关电源的恒流调节的补偿电路和方法。 指示电源的输出电流的反馈信号的振铃波形引起误差。 为了消除误差，电流源响应于指示由反馈信号的振铃波形引起的误差的去磁振荡信号对电容器充电。 将电容器两端的电压与参考信号进行比较，以产生指示开关模式电源的次级绕组中次级二极管的导通时间的更准确的信号。 该更准确的信号被输入到逻辑电路以产生恒定电流控制信号以控制电源的电源开关。