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1. 发明申请

US20100201335A1 OFF TIME CONTROL METHOD FOR SWITCHING REGULATOR 有权
标题翻译：用于切换调节器的关闭时间控制方法
公开(公告)号：US20100201335A1
公开(公告)日：2010-08-12
申请号：US12687035
申请日：2010-01-13
申请人： En Li , Yang Shi , Huanyu Lu , Junming Zhang , Yuancheng Ren
发明人： En Li , Yang Shi , Huanyu Lu , Junming Zhang , Yuancheng Ren
IPC分类号： G05F1/10
CPC分类号： H02M3/33507
摘要： The present invention provides an off time control method and switching regulator using it. The current flowing through a switch is compared with a current threshold, and the switch is turned off if the current flowing through the switch is larger than the current threshold. The off time of the switch is determined by the load. The current threshold is variable at light load to prevent generating the audible noise and improve the whole efficiency.
摘要翻译：本发明提供一种关闭时间控制方法和使用它的开关调节器。将流过开关的电流与电流阈值进行比较，并且如果流过开关的电流大于电流阈值，则开关断开。开关的关闭时间由负载决定。电流阈值在轻负载时可变，防止产生可听噪声，提高整体效率。

2. 发明授权

US08971061B2 Off time control method for switching regulator 有权
标题翻译：关断时间控制方法
公开(公告)号：US08971061B2
公开(公告)日：2015-03-03
申请号：US12687035
申请日：2010-01-13
申请人： En Li , Yang Shi , Huanyu Lu , Junming Zhang , Yuancheng Ren
发明人： En Li , Yang Shi , Huanyu Lu , Junming Zhang , Yuancheng Ren
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： The present invention provides an off time control method and switching regulator using it. The current flowing through a switch is compared with a current threshold, and the switch is turned off if the current flowing through the switch is larger than the current threshold. The off time of the switch is determined by the load. The current threshold is variable at light load to prevent generating the audible noise and improve the whole efficiency.
摘要翻译：本发明提供一种关闭时间控制方法和使用它的开关调节器。将流过开关的电流与电流阈值进行比较，并且如果流过开关的电流大于电流阈值，则开关断开。开关的关闭时间由负载决定。电流阈值在轻负载时可变，防止产生可听噪声，提高整体效率。

3. 发明申请

US20110228570A1 SWITCHING MODE POWER SUPPLIES WITH PRIMARY SIDE CONTROL AND ASSOCIATED METHODS OF CONTROL 审中-公开
标题翻译：切换模式电源与主控制和相关的控制方法
公开(公告)号：US20110228570A1
公开(公告)日：2011-09-22
申请号：US13048660
申请日：2011-03-15
申请人： En Li , Junming Zhang , Yuancheng Ren
发明人： En Li , Junming Zhang , Yuancheng Ren
IPC分类号： H02M3/335
CPC分类号： H02M3/156
摘要： Switching mode power supplies with primary side control and associated methods of control are disclosed. In one embodiment, a signal with input voltage information and a signal with both input voltage information and output voltage information are provided to a subtracter to generate a feedback signal that is indicative of the output voltage. The feedback signal is then used to control the switching mode power supply.
摘要翻译：公开了具有初级侧控制和相关控制方法的开关电源。在一个实施例中，具有输入电压信息的信号和具有输入电压信息和输出电压信息两者的信号被提供给减法器以产生指示输出电压的反馈信号。然后将反馈信号用于控制开关模式电源。

4. 发明申请

US20110110123A1 SWITCHING MODE POWER SUPPLY SPECTRUM SHAPING AND THE METHOD THEREOF 有权
标题翻译：切换模式电源光谱形成及其方法
公开(公告)号：US20110110123A1
公开(公告)日：2011-05-12
申请号：US12944568
申请日：2010-11-11
申请人： En Li , Junming Zhang , Yuancheng Ren
发明人： En Li , Junming Zhang , Yuancheng Ren
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/44 , H02M3/33523
摘要： Embodiments of circuits and methods for a switching mode power supply are described in detail herein. In one embodiment, a switching mode power supply includes a transformer having a primary winding and a secondary winding to supply power to a load, a feedback circuit that generates a feedback signal that varies in relation to the load on the secondary winding, a switching circuit coupled to the primary winding to control current flow through the primary winding, and a control circuit coupled to the switching circuit to control the on/off status of switching circuit in response to the feedback signal and the current flow through the primary winding. The control circuit comprises a spectrum shaping circuit configured to generate a spectrum shaping signal in response to the feedback signal. The spectrum shaping signal can then be used to regulate the switching frequency and the spectrum shaping range.
摘要翻译：本文详细描述了开关模式电源的电路和方法的实施例。在一个实施例中，开关模式电源包括具有初级绕组和次级绕组以向负载供电的变压器，产生相对于次级绕组上的负载变化的反馈信号的反馈电路，开关电路耦合到初级绕组以控制通过初级绕组的电流;以及控制电路，其耦合到开关电路，以响应于反馈信号和通过初级绕组的电流来控制开关电路的接通/断开状态。该控制电路包括频谱整形电路，该频谱整形电路被配置为响应于反馈信号产生频谱整形信号。频谱整形信号可用于调节开关频率和频谱整形范围。

5. 发明申请

US20120112795A1 Peak Current Control Circuit for Switching Mode Power Supply and Method Thereof 有权
标题翻译：用于开关电源的峰值电流控制电路及其方法
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。

6. 发明申请

US20100302815A1 SWITCHING MODE POWER SUPPLY WITH A MULTI-MODE CONTROLLER 有权
标题翻译：用多模式控制器切换模式电源
公开(公告)号：US20100302815A1
公开(公告)日：2010-12-02
申请号：US12720396
申请日：2010-03-09
申请人： En Li , Junming Zhang , Yuancheng Ren
发明人： En Li , Junming Zhang , Yuancheng Ren
IPC分类号： H02M3/335
CPC分类号： H02M3/33523
摘要： A switching mode power supply with a multi-mode controller is provided. The switching mode power supply may include a transformer having a primary winding and a secondary winding to supply power to a load. A feedback circuit may be included to generate a feedback signal that varies in relation to the load on the secondary winding. The multi-mode controller may include a switching circuit, a frequency control circuit and a current limiting circuit. The switching circuit may be coupled to the primary winding to control current flow through the primary winding. The frequency control circuit may control a switching frequency of the switching circuit based on the feedback signal. The current limiting circuit may limit current flow through the primary winding by causing the switching circuit to suspend current flow through the primary winding when the current reaches a peak current limit that is set based on the feedback signal.
摘要翻译：提供了具有多模式控制器的开关模式电源。开关模式电源可以包括具有初级绕组和次级绕组以向负载供电的变压器。可以包括反馈电路以产生相对于次级绕组上的负载而变化的反馈信号。多模式控制器可以包括开关电路，频率控制电路和限流电路。开关电路可以耦合到初级绕组以控制通过初级绕组的电流。频率控制电路可以基于反馈信号来控制开关电路的开关频率。当电流达到基于反馈信号设定的峰值电流限制时，限流电路可以通过使开关电路暂停通过初级绕组的电流来限制通过初级绕组的电流。

7. 发明授权

US08749997B2 Peak current control circuit for switching mode power supply and method thereof 有权
标题翻译：用于开关电源的峰值电流控制电路及其方法
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。

8. 发明授权

US08593841B2 Compensation circuit for constant current regulation of power supply and method thereof 有权
标题翻译：电源恒流调节补偿电路及其方法
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。

9. 发明授权

US08498135B2 Switching mode power supply with spectrum shaping and the method thereof 有权
标题翻译：具有频谱整形的开关电源及其方法
公开(公告)号：US08498135B2
公开(公告)日：2013-07-30
申请号：US12944568
申请日：2010-11-11
申请人： En Li , Junming Zhang , Yuancheng Ren
发明人： En Li , Junming Zhang , Yuancheng Ren
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/44 , H02M3/33523
摘要： Embodiments of circuits and methods for a switching mode power supply are described in detail herein. In one embodiment, a switching mode power supply includes a transformer having a primary winding and a secondary winding to supply power to a load, a feedback circuit that generates a feedback signal that varies in relation to the load on the secondary winding, a switching circuit coupled to the primary winding to control current flow through the primary winding, and a control circuit coupled to the switching circuit to control the on/off status of switching circuit in response to the feedback signal and the current flow through the primary winding. The control circuit comprises a spectrum shaping circuit configured to generate a spectrum shaping signal in response to the feedback signal. The spectrum shaping signal can then be used to regulate the switching frequency and the spectrum shaping range.
摘要翻译：本文详细描述了开关模式电源的电路和方法的实施例。在一个实施例中，开关模式电源包括具有初级绕组和次级绕组以向负载供电的变压器，产生相对于次级绕组上的负载变化的反馈信号的反馈电路，开关电路耦合到初级绕组以控制通过初级绕组的电流;以及控制电路，其耦合到开关电路，以响应于反馈信号和通过初级绕组的电流来控制开关电路的接通/断开状态。该控制电路包括频谱整形电路，该频谱整形电路被配置为响应于反馈信号产生频谱整形信号。频谱整形信号可用于调节开关频率和频谱整形范围。

10. 发明授权

US08472217B2 Switching mode power supply with a multi-mode controller 有权
标题翻译：具有多模式控制器的开关电源
公开(公告)号：US08472217B2
公开(公告)日：2013-06-25
申请号：US12720396
申请日：2010-03-09
申请人： En Li , Junming Zhang , Yuancheng Ren
发明人： En Li , Junming Zhang , Yuancheng Ren
IPC分类号： H02H7/122
CPC分类号： H02M3/33523
摘要： A switching mode power supply with a multi-mode controller is provided. The switching mode power supply may include a transformer having a primary winding and a secondary winding to supply power to a load. A feedback circuit may be included to generate a feedback signal that varies in relation to the load on the secondary winding. The multi-mode controller may include a switching circuit, a frequency control circuit and a current limiting circuit. The switching circuit may be coupled to the primary winding to control current flow through the primary winding. The frequency control circuit may control a switching frequency of the switching circuit based on the feedback signal. The current limiting circuit may limit current flow through the primary winding by causing the switching circuit to suspend current flow through the primary winding when the current reaches a peak current limit that is set based on the feedback signal.
摘要翻译：提供了具有多模式控制器的开关模式电源。开关模式电源可以包括具有初级绕组和次级绕组以向负载供电的变压器。可以包括反馈电路以产生相对于次级绕组上的负载而变化的反馈信号。多模式控制器可以包括开关电路，频率控制电路和限流电路。开关电路可以耦合到初级绕组以控制通过初级绕组的电流。频率控制电路可以基于反馈信号来控制开关电路的开关频率。当电流达到基于反馈信号设定的峰值电流限制时，限流电路可以通过使开关电路暂停通过初级绕组的电流来限制通过初级绕组的电流。

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