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1. 发明授权

US08792258B2 Method and apparatus for reducing standby power of switching mode power supplies 有权
标题翻译：降低开关电源待机功率的方法和装置
公开(公告)号：US08792258B2
公开(公告)日：2014-07-29
申请号：US12248665
申请日：2008-10-09
申请人： Yajiang Zhu , Ruixia Fei , Wenhui Dong , Shaohua Fang
发明人： Yajiang Zhu , Ruixia Fei , Wenhui Dong , Shaohua Fang
IPC分类号： H02M3/335 , H02M3/338
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： An apparatus for coupling a switching mode power supply (SMPS) controller to a rectified line voltage. The apparatus includes a high-voltage startup transistor configured to provide a charging current during a startup phase of the SMPS controller and to provide substantially no current during a normal operation phase of the SMPS controller. A switch coupled to the high-voltage startup transistor. The switch receives a control signal from the SMPS controller, for turning off the switch during the startup phase and turning on the switch during the normal operation phase. A biasing device is connected in series with the switch and maintains the startup transistor in an off state when the SMPS controller is in the normal operation phase. A standby current in the apparatus is substantially lower when the SMPS controller is in the normal operation phase than the charging current in the apparatus when the SMPS is in the startup phase.
摘要翻译：一种用于将开关模式电源（SMPS）控制器耦合到整流线路电压的装置。该装置包括高压启动晶体管，其被配置为在SMPS控制器的启动阶段期间提供充电电流，并且在SMPS控制器的正常操作阶段期间基本上不提供电流。一个开关，耦合到高电压启动晶体管。开关从SMPS控制器接收控制信号，在启动阶段关闭开关，并在正常运行阶段打开开关。当SMPS控制器处于正常工作阶段时，偏置装置与开关串联连接，并将启动晶体管保持在断开状态。当SMPS处于启动阶段时，当SMPS控制器处于正常操作阶段时，装置中的备用电流大大低于装置中的充电电流。

2. 发明申请

US20090279333A1 METHOD AND APPARATUS FOR REDUCING STANDBY POWER OF SWITCHING MODE POWER SUPPLIES 有权
标题翻译：用于降低开关电源的待机功率的方法和装置
公开(公告)号：US20090279333A1
公开(公告)日：2009-11-12
申请号：US12248665
申请日：2008-10-09
申请人： Yajiang Zhu , Ruixia Fei , Wenhui Dong , Shaohua Fang
发明人： Yajiang Zhu , Ruixia Fei , Wenhui Dong , Shaohua Fang
IPC分类号： H02M7/155
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： An apparatus for coupling a switching mode power supply (SMPS) controller to a rectified line voltage. The apparatus includes a high-voltage startup transistor configured to provide a charging current during a startup phase of the SMPS controller and to provide substantially no current during a normal operation phase of the SMPS controller. A switch coupled to the high-voltage startup transistor. The switch receives a control signal from the SMPS controller, for turning off the switch during the startup phase and turning on the switch during the normal operation phase. A biasing device is connected in series with the switch and maintains the startup transistor in an off state when the SMPS controller is in the normal operation phase. A standby current in the apparatus is substantially lower when the SMPS controller is in the normal operation phase than the charging current in the apparatus when the SMPS is in the startup phase.
摘要翻译：一种用于将开关模式电源（SMPS）控制器耦合到整流线路电压的装置。该装置包括高压启动晶体管，其被配置为在SMPS控制器的启动阶段期间提供充电电流，并且在SMPS控制器的正常操作阶段期间基本上不提供电流。一个开关，耦合到高电压启动晶体管。开关从SMPS控制器接收控制信号，在启动阶段关闭开关，并在正常运行阶段打开开关。当SMPS控制器处于正常工作阶段时，偏置装置与开关串联连接，并将启动晶体管保持在断开状态。当SMPS处于启动阶段时，当SMPS控制器处于正常操作阶段时，装置中的备用电流大大低于装置中的充电电流。

3. 发明授权

US08897039B2 Method and system for pulse frequency modulated switching mode power supplies 有权
标题翻译：脉冲调制开关电源的方法和系统
公开(公告)号：US08897039B2
公开(公告)日：2014-11-25
申请号：US12136760
申请日：2008-06-10
申请人： Yajiang Zhu , Tao Peng , Ruixia Fei , Shaohua Fang
发明人： Yajiang Zhu , Tao Peng , Ruixia Fei , Shaohua Fang
IPC分类号： H02M3/335 , H02M1/44 , H03K7/06 , H03K5/1532 , H03K17/16
CPC分类号： H02M3/33523 , H02M1/44 , H03K5/1532 , H03K7/06 , H03K17/16
摘要： A pulse frequency modulation (PFM) controller for controlling a switching mode power supply. The controller includes an output terminal for providing a control signal to turn on and off a current in the power supply to regulate an output of the power supply. A first input terminal receives a feedback signal related to the output of the power supply, the feedback signal exhibiting a ringing waveform when the current in the power supply is turned off. The controller also includes a control circuit configured to provide the control signal in response to the feedback signal. The control signal is adapted to turn on the current in the power supply when the feedback signal is substantially at a valley of the ringing waveform of the feedback signal. In an embodiment, such a PFM controller can reduce turn-on transition loss in a power supply and provides frequency dithering to reduce electromagnetic interference.
摘要翻译：用于控制开关模式电源的脉冲频率调制（PFM）控制器。该控制器包括输出端子，用于提供控制信号以接通和关断电源中的电流以调节电源的输出。第一输入端子接收与电源的输出相关的反馈信号，当电源中的电流关闭时，反馈信号呈现振铃波形。该控制器还包括控制电路，该控制电路被配置为响应于反馈信号提供控制信号。当反馈信号基本上处于反馈信号的振铃波形的谷谷时，控制信号适于接通电源中的电流。在一个实施例中，这样的PFM控制器可以减少电源中的导通过渡损耗并提供频率抖动以减少电磁干扰。

4. 发明申请

US20140239930A1 CONSTANT-VOLTAGE AND CONSTANT-CURRENT BUCK CONVERTER AND CONTROL CIRCUIT 有权
标题翻译：恒定电流和恒定电流转换器和控制电路
公开(公告)号：US20140239930A1
公开(公告)日：2014-08-28
申请号：US14033341
申请日：2013-09-20
申请人： Hu Wang , Yajiang Zhu , Ruixia Fei , Shuzhuang Lv
发明人： Hu Wang , Yajiang Zhu , Ruixia Fei , Shuzhuang Lv
IPC分类号： H02M3/10
CPC分类号： H02M3/156 , H02M1/08 , H02M3/10 , H02M7/2176 , H02M2001/0009 , H02M2001/0022
摘要： A control circuit is provided for a buck converter that includes at least an inductor coupled to an output of the buck converter. The control circuit includes a power switch configured for coupling to a line voltage and configured for charging the inductor, an input line voltage sampling circuit, and a constant-voltage (CV) and constant-current (CC) control module coupled to the power switch. During a charging period of the inductor, the CV and CC control module is configured to control the power switch to provide a constant output current by maintaining a constant peak inductor current, even when the input line voltage changes. During a discharging period of the inductor, the CV and CC control module is configured to monitor the sensed output voltage to control the power switch to provide a constant output voltage.
摘要翻译：提供了一种用于降压转换器的控制电路，其包括耦合到降压转换器的输出的至少一个电感器。控制电路包括被配置为耦合到线路电压并被配置为对电感器充电的电源开关，输入线电压采样电路和耦合到电源开关的恒压（CV）和恒流（CC）控制模块。在电感器的充电期间，CV和CC控制模块配置为通过保持恒定的峰值电感电流来控制电源开关以提供恒定的输出电流，即使输入线路电压发生变化。在电感器的放电期间，CV和CC控制模块被配置为监视感测的输出电压，以控制电源开关以提供恒定的输出电压。

5. 发明授权

US09356508B2 Constant-voltage and constant-current buck converter and control circuit 有权
标题翻译：恒压恒流降压转换器和控制电路
公开(公告)号：US09356508B2
公开(公告)日：2016-05-31
申请号：US14033341
申请日：2013-09-20
申请人： Hu Wang , Yajiang Zhu , Ruixia Fei , Shuzhuang Lv
发明人： Hu Wang , Yajiang Zhu , Ruixia Fei , Shuzhuang Lv
IPC分类号： G05F1/56 , G05F3/06 , H02M7/66 , H02M3/10 , H02M3/156 , H02M7/217 , H02M1/00
CPC分类号： H02M3/156 , H02M1/08 , H02M3/10 , H02M7/2176 , H02M2001/0009 , H02M2001/0022
摘要： A control circuit is provided for a buck converter that includes at least an inductor coupled to an output of the buck converter. The control circuit includes a power switch configured for coupling to a line voltage and configured for charging the inductor, an input line voltage sampling circuit, and a constant-voltage (CV) and constant-current (CC) control module coupled to the power switch. During a charging period of the inductor, the CV and CC control module is configured to control the power switch to provide a constant output current by maintaining a constant peak inductor current, even when the input line voltage changes. During a discharging period of the inductor, the CV and CC control module is configured to monitor the sensed output voltage to control the power switch to provide a constant output voltage.
摘要翻译：提供了一种用于降压转换器的控制电路，其包括耦合到降压转换器的输出的至少一个电感器。控制电路包括被配置为耦合到线路电压并被配置为对电感器充电的电源开关，输入线电压采样电路和耦合到电源开关的恒压（CV）和恒流（CC）控制模块。在电感器的充电期间，CV和CC控制模块配置为通过保持恒定的峰值电感电流来控制电源开关以提供恒定的输出电流，即使输入线路电压发生变化。在电感器的放电期间，CV和CC控制模块被配置为监视感测的输出电压，以控制电源开关以提供恒定的输出电压。

6. 发明授权

US08213203B2 Method and apparatus for controlling a constant current output in a switching mode power supply 有权
标题翻译：用于在开关模式电源中控制恒定电流输出的方法和装置
公开(公告)号：US08213203B2
公开(公告)日：2012-07-03
申请号：US12620420
申请日：2009-11-17
申请人： Ruixia Fei , Tao Sun , QingHua Su , Huizhen Zhu
发明人： Ruixia Fei , Tao Sun , QingHua Su , Huizhen Zhu
IPC分类号： H02M7/537
CPC分类号： H02M3/33523
摘要： A controller for providing a constant output current control signal in a switched mode power supply (SMPS) includes a conduction time compensation circuit that is configured to produce a compensated conduction time interval signal that includes compensation for a ringing waveform of a feedback signal. The compensated signal reflects more accurately the actual conductive time of a rectifying diode in a secondary winding of the switched mode power supply. In one embodiment, the compensated conduction time interval signal is used to generate a fixed ratio between the conduction time and the non-conduction time of the rectifying diode. In another embodiment, the controller also provides a constant voltage control signal.
摘要翻译：用于在开关模式电源（SMPS）中提供恒定输出电流控制信号的控制器包括导通时间补偿电路，其被配置为产生补偿的导通时间间隔信号，该信号包括对反馈信号的振铃波形的补偿。补偿信号更准确地反映了开关模式电源的次级绕组中整流二极管的实际导通时间。在一个实施例中，补偿导通时间间隔信号用于产生整流二极管的导通时间和非导通时间之间的固定比率。在另一实施例中，控制器还提供恒定电压控制信号。

7. 发明申请

US20100238689A1 METHOD AND APPARATUS FOR CONTROLLING A CONSTANT CURRENT OUTPUT IN A SWITCHING MODE POWER SUPPLY 有权
标题翻译：用于控制切换模式电源中恒定电流输出的方法和装置
公开(公告)号：US20100238689A1
公开(公告)日：2010-09-23
申请号：US12620420
申请日：2009-11-17
申请人： Ruixia Fei , Tao Sun , QingHua Su , Huizhen Zhu
发明人： Ruixia Fei , Tao Sun , QingHua Su , Huizhen Zhu
IPC分类号： H02M3/335
CPC分类号： H02M3/33523
摘要： A controller for providing a constant output current control signal in a switched mode power supply (SMPS) includes a conduction time compensation circuit that is configured to produce a compensated conduction time interval signal that includes compensation for a ringing waveform of a feedback signal. The compensated signal reflects more accurately the actual conductive time of a rectifying diode in a secondary winding of the switched mode power supply. In one embodiment, the compensated conduction time interval signal is used to generate a fixed ratio between the conduction time and the non-conduction time of the rectifying diode. In another embodiment, the controller also provides a constant voltage control signal.
摘要翻译：用于在开关模式电源（SMPS）中提供恒定输出电流控制信号的控制器包括导通时间补偿电路，其被配置为产生补偿的导通时间间隔信号，该信号包括对反馈信号的振铃波形的补偿。补偿信号更准确地反映了开关模式电源的次级绕组中整流二极管的实际导通时间。在一个实施例中，补偿导通时间间隔信号用于产生整流二极管的导通时间和非导通时间之间的固定比率。在另一实施例中，控制器还提供恒定电压控制信号。

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