公开(公告)号：US08238124B2

公开(公告)日：2012-08-07

申请号：US12633983

申请日：2009-12-09

Applicant: Huanyu Lu ,  En Li

Inventor： Huanyu Lu ,  En Li

IPC: H02M3/335

CPC classification number: H02M3/33523

Abstract: Dual-mode AC/DC power converters and associated methods of operation are disclosed herein. In one embodiment, the AC/DC converter includes a primary winding, a switching transistor coupled to the primary winding, the switching transistor configured to carry a drain-source current, and a feedback voltage port configured to carry a feedback voltage. The feedback voltage port is coupled to the switching transistor to switch off the switching transistor when the drain-source current reaches a peak current limit. The peak current limit increases with increasing feedback voltage if and only if the feedback voltage satisfies an ordered relationship with a threshold.

Abstract translation: 这里公开了双模式AC / DC电力转换器及相关操作方法。 在一个实施例中，AC / DC转换器包括初级绕组，耦合到初级绕组的开关晶体管，被配置为承载漏源电流的开关晶体管和被配置为承载反馈电压的反馈电压端口。 当漏极 - 源极电流达到峰值电流极限时，反馈电压端口耦合到开关晶体管，以断开开关晶体管。 当且仅当反馈电压满足与阈值的有序关系时，峰值电流限制随着反馈电压的增加而增加。

公开(公告)号：US08054655B2

公开(公告)日：2011-11-08

申请号：US12264207

申请日：2008-11-03

Applicant: James C. Moyer ,  Kaiwei Yao ,  Yuxin Li ,  Junming Zhang ,  Huanyu Lu

Inventor： James C. Moyer ,  Kaiwei Yao ,  Yuxin Li ,  Junming Zhang ,  Huanyu Lu

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: An inventive isolated converter which exempts the auxiliary isolation devices with accurate voltage regulation is disclosed. The converter includes the primary side circuit with a primary controller controlling the on and off of the primary switch and a secondary side circuit with a secondary controller controlling the on and off of the secondary synchronous rectifier. The isolated converter uses the secondary controller to turn on the secondary synchronous rectifier after the secondary current decreases to zero to generate a negative tail current and turns off the secondary synchronous rectifier at a reference tail current peak value to generate a reflected negative current at the primary side circuit for turning on the primary switch.

Abstract translation: 公开了一种免除具有精确电压调节的辅助隔离装置的本发明的隔离转换器。 转换器包括初级侧电路，其中主控制器控制主开关的导通和关断;以及次级侧电路，其次级控制器控制次同步整流器的导通和关断。 在二次电流下降到零以后，隔离转换器使用次级控制器接通次级同步整流器，以产生负尾电流，并以参考尾电流峰值关断次同步整流器，以在初级电流产生反射负电流 打开主开关的侧面电路。

公开(公告)号：US20100302813A1

公开(公告)日：2010-12-02

申请号：US12633983

申请日：2009-12-09

Applicant: Huanyu Lu ,  En Li

Inventor： Huanyu Lu ,  En Li

IPC: H02M3/335

CPC classification number: H02M3/33523

Abstract: Dual-mode AC/DC power converters and associated methods of operation are disclosed herein. In one embodiment, the AC/DC converter includes a primary winding, a switching transistor coupled to the primary winding, the switching transistor configured to carry a drain-source current, and a feedback voltage port configured to carry a feedback voltage. The feedback voltage port is coupled to the switching transistor to switch off the switching transistor when the drain-source current reaches a peak current limit. The peak current limit increases with increasing feedback voltage if and only if the feedback voltage satisfies an ordered relationship with a threshold.

Abstract translation: 这里公开了双模式AC / DC电力转换器及相关操作方法。 在一个实施例中，AC / DC转换器包括初级绕组，耦合到初级绕组的开关晶体管，被配置为承载漏源电流的开关晶体管和被配置为承载反馈电压的反馈电压端口。 当漏极 - 源极电流达到峰值电流极限时，反馈电压端口耦合到开关晶体管，以断开开关晶体管。 当且仅当反馈电压满足与阈值的有序关系时，峰值电流限制随着反馈电压的增加而增加。

公开(公告)号：US08315072B2

公开(公告)日：2012-11-20

申请号：US12720410

申请日：2010-03-09

Applicant: Huanyu Lu ,  En Li

Inventor： Huanyu Lu ,  En Li

IPC: H02M3/335 ,  H02H7/122

CPC classification number: H02M3/33523 ,  H02M2001/0022

Abstract: A switching power supply has an inductor that includes a coil. A chopper circuit chops the primary current drawn through the coil, for the inductor to output an induced current. A multifunction junction of the power supply has a multifunction voltage that is a function of a primary voltage that drives the coil. A first circuit suspends the chopping in response to a first sensed voltage crossing a first threshold, the first sensed voltage being a function of the multifunction voltage. A second circuit suspends the chopping in response to a second sensed voltage crossing a second threshold, the second threshold being a function of the multifunction voltage.

Abstract translation: 开关电源具有包括线圈的电感器。 斩波电路扼流通过线圈汲取的初级电流，使电感器输出感应电流。 电源的多功能接点具有作为驱动线圈的初级电压的函数的多功能电压。 第一电路响应于穿过第一阈值的第一感测电压来暂停斩波，第一感测电压是多功能电压的函数。 第二电路响应于穿过第二阈值的第二感测电压来暂停斩波，第二阈值是多功能电压的函数。

公开(公告)号：US20110007526A1

公开(公告)日：2011-01-13

申请号：US12817002

申请日：2010-06-16

Applicant: Junming Zhang ,  Yuanchang Ren ,  Jin Hu ,  Huanyu Lu ,  Yang Shi

Inventor： Junming Zhang ,  Yuanchang Ren ,  Jin Hu ,  Huanyu Lu ,  Yang Shi

IPC: H02M3/335

CPC classification number: H02M3/338 ,  H02M3/1563 ,  Y02B70/1425 ,  Y02B70/1433

Abstract: A frequency limitation method used in quasi-resonant control of a switching regulator is disclosed. The switching frequency is limited through setting a minimum time limit, such as a minimum switching period or a minimum OFF time. The minimum time limit may be a first time limit or a second time limit. The minimum time limit is changed into another value if the minimum voltage point approaches the minimum time limit point, so as to eliminate the audible noise.

Abstract translation: 公开了一种用于开关调节器的准谐振控制的频率限制方法。 通过设置最小时间限制（例如最小切换周期或最小关闭时间）来限制开关频率。 最小时限可以是第一时限或第二时间限制。 如果最小电压点接近最小时限，则将最小时间限制改为另一个值，以消除可听见的噪声。

公开(公告)号：US20100201335A1

公开(公告)日：2010-08-12

申请号：US12687035

申请日：2010-01-13

Applicant: En Li ,  Yang Shi ,  Huanyu Lu ,  Junming Zhang ,  Yuancheng Ren

Inventor： En Li ,  Yang Shi ,  Huanyu Lu ,  Junming Zhang ,  Yuancheng Ren

IPC: G05F1/10

CPC classification number: H02M3/33507

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08971061B2

公开(公告)日：2015-03-03

申请号：US12687035

申请日：2010-01-13

Applicant: En Li ,  Yang Shi ,  Huanyu Lu ,  Junming Zhang ,  Yuancheng Ren

Inventor： En Li ,  Yang Shi ,  Huanyu Lu ,  Junming Zhang ,  Yuancheng Ren

IPC: H02M3/335

CPC classification number: H02M3/33507

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08238123B2

公开(公告)日：2012-08-07

申请号：US12817002

申请日：2010-06-16

Applicant: Junming Zhang ,  Yuanchang Ren ,  Jin Hu ,  Huanyu Lu ,  Yang Shi

Inventor： Junming Zhang ,  Yuanchang Ren ,  Jin Hu ,  Huanyu Lu ,  Yang Shi

IPC: H02M3/335

CPC classification number: H02M3/338 ,  H02M3/1563 ,  Y02B70/1425 ,  Y02B70/1433

Abstract: A frequency limitation method used in quasi-resonant control of a switching regulator is disclosed. The switching frequency is limited through setting a minimum time limit, such as a minimum switching period or a minimum OFF time. The minimum time limit may be a first time limit or a second time limit. The minimum time limit is changed into another value if the minimum voltage point approaches the minimum time limit point, so as to eliminate the audible noise.

Abstract translation: 公开了一种用于开关调节器的准谐振控制的频率限制方法。 通过设置最小时间限制（例如最小切换周期或最小关闭时间）来限制开关频率。 最小时限可以是第一时限或第二时间限制。 如果最小电压点接近最小时限，则将最小时间限制改为另一个值，以消除可听见的噪声。

公开(公告)号：US20100302814A1

公开(公告)日：2010-12-02

申请号：US12720410

申请日：2010-03-09

Applicant: Huanyu Lu ,  En Li

Inventor： Huanyu Lu ,  En Li

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M2001/0022

Abstract: A switching power supply has an inductor that includes a coil. A chopper circuit chops the primary current drawn through the coil, for the inductor to output an induced current. A multifunction junction of the power supply has a multifunction voltage that is a function of a primary voltage that drives the coil. A first circuit suspends the chopping in response to a first sensed voltage crossing a first threshold, the first sensed voltage being a function of the multifunction voltage. A second circuit suspends the chopping in response to a second sensed voltage crossing a second threshold, the second threshold being a function of the multifunction voltage.

Abstract translation: 开关电源具有包括线圈的电感器。 斩波电路扼流通过线圈汲取的初级电流，使电感器输出感应电流。 电源的多功能接点具有作为驱动线圈的初级电压的函数的多功能电压。 第一电路响应于穿过第一阈值的第一感测电压来暂停斩波，第一感测电压是多功能电压的函数。 第二电路响应于穿过第二阈值的第二感测电压来暂停斩波，第二阈值是多功能电压的函数。

公开(公告)号：US20100110732A1

公开(公告)日：2010-05-06

申请号：US12264207

申请日：2008-11-03

Applicant: James C. Moyer ,  Kaiwei Yao ,  Yuxin Li ,  Junming Zhang ,  Huanyu Lu

Inventor： James C. Moyer ,  Kaiwei Yao ,  Yuxin Li ,  Junming Zhang ,  Huanyu Lu

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: An inventive isolated converter which exempts the auxiliary isolation devices with accurate voltage regulation is disclosed. The converter includes the primary side circuit with a primary controller controlling the on and off of the primary switch and a secondary side circuit with a secondary controller controlling the on and off of the secondary synchronous rectifier. The isolated converter uses the secondary controller to turn on the secondary synchronous rectifier after the secondary current decreases to zero to generate a negative tail current and turns off the secondary synchronous rectifier at a reference tail current peak value to generate a reflected negative current at the primary side circuit for turning on the primary switch.

Abstract translation: 公开了一种免除具有精确电压调节的辅助隔离装置的本发明的隔离转换器。 转换器包括初级侧电路，其中主控制器控制主开关的导通和关断;以及次级侧电路，其次级控制器控制次同步整流器的导通和关断。 在二次电流下降到零以后，隔离转换器使用次级控制器接通次级同步整流器，以产生负尾电流，并以参考尾电流峰值关断次同步整流器，以在初级电流产生反射负电流 打开主开关的侧面电路。