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公开(公告)号：US20180248488A1
公开(公告)日：2018-08-30
申请号：US15461283
申请日：2017-03-16
发明人： Yaming Cao , Qiang Luo , Lieyi Fang
CPC分类号： H02M3/33592 , H02M1/08 , H02M1/38 , H02M1/44 , H02M2001/0009
摘要： System controller and method for regulating a power converter. For example, the system controller includes a first controller terminal and a second controller terminal. The system controller is configured to: receive, at the first controller terminal, an input signal; generate a drive signal based at least in part on the input signal, the drive signal being associated with an on-time period and an off-time period, the on-time period including a first beginning and a first end; and output, at the second controller terminal, the drive signal to a switch to close the switch during the on-time period and open the switch during the off-time period to affect a current associated with a secondary winding of the power converter. The system controller is further configured to detect a demagnetization period associated with the secondary winding based at least in part on the input signal.
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2.发明授权Systems and methods for regulating power conversion systems with output detection and synchronized rectifying mechanisms 有权用于调节具有输出检测和同步整流机构的电力转换系统的系统和方法公开(公告)号：US09413246B2
公开(公告)日：2016-08-09
申请号：US14248201
申请日：2014-04-08
发明人： Qiang Luo , Yaming Cao , Lieyi Fang
CPC分类号： H02M3/33507 , H02M1/08 , H02M2001/0032 , H02M2001/0054 , H03K2017/307 , Y02B70/16
摘要： System and method for regulating a power conversion system. An example system controller includes: a first controller terminal and a second controller terminal. The system controller is configured to: receive an input signal at the first controller terminal and generate a first drive signal at the second controller terminal based on at least information associated with the input signal to turn on or off a transistor to affect a current associated with a secondary winding of the power conversion system. The system controller is further configured to: in response to the input signal changing from a first value larger than a first threshold to a second value smaller than the first threshold, change the first drive signal from a first logic level to a second logic level to turn on the transistor.
摘要翻译： 用于调节电力转换系统的系统和方法。 示例性系统控制器包括：第一控制器终端和第二控制器终端。 所述系统控制器被配置为：在所述第一控制器终端处接收输入信号，并且至少基于与所述输入信号相关联的信息，在所述第二控制器终端产生第一驱动信号，以打开或关闭晶体管以影响与 电力转换系统的次级绕组。 系统控制器还被配置为：响应于输入信号从大于第一阈值的第一值改变到小于第一阈值的第二值，将第一驱动信号从第一逻辑电平改变到第二逻辑电平， 打开晶体管。
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公开(公告)号：US09385612B2
公开(公告)日：2016-07-05
申请号：US13915477
申请日：2013-06-11
发明人： Yunchao Zhang , Yaming Cao , Xiaomin Huang , Xiuhong Zhang , Lieyi Fang
CPC分类号： H02M3/33515 , H02M1/08 , H02M3/335 , H02M3/33523 , H02M2001/0009 , H05B33/0815
摘要： System and method for regulating a power converter. The system includes a first signal generator configured to receive a first sensed signal and generate an output signal associated with demagnetization. The first sensed signal is related to a first winding coupled to a secondary winding for a power converter, and the secondary winding is associated with at least an output current for the power converter. Additionally, the system includes a ramping signal generator configured to receive the output signal and generate a ramping signal, and a first comparator configured to receive the ramping signal and a first threshold signal and generate a first comparison signal based on at least information associated with the ramping signal and the first threshold signal. Moreover, the system includes a second comparator configured to receive a second sensed signal and a second threshold signal and generate a second comparison signal.
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4.发明授权System and method providing protection in the event of current sensing failure for power converter 有权系统和方法在电力变换器电流检测故障的情况下提供保护公开(公告)号：US09362737B2
公开(公告)日：2016-06-07
申请号：US14500665
申请日：2014-09-29
发明人： Dongze Yang , Yaming Cao , Yunchao Zhang , Lieyi Fang
CPC分类号： H02M3/33515 , H02H7/1213 , H02M1/08 , H02M1/32 , H02M3/33507 , H02M2001/0009
摘要： System and method for protecting a power converter. The system includes a first comparator configured to receive a first threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a second comparator configured to receive a second threshold signal and the first signal and to generate a second comparison signal. The second threshold signal is different from the first threshold signal in magnitude. Moreover, the system includes a first detection component configured to receive at least the second comparison signal, detect the second comparison signal only if one or more predetermined conditions are satisfied, and generate a first detection signal based on at least information associated with the detected second comparison signal.
摘要翻译： 保护电源转换器的系统和方法。 该系统包括被配置为接收第一阈值信号和第一信号并产生第一比较信号的第一比较器。 第一个信号与功率转换器的输入电流相关联。 另外，该系统包括第二比较器，其被配置为接收第二阈值信号和第一信号并产生第二比较信号。 第二阈值信号的大小不同于第一阈值信号。 此外，该系统包括被配置为至少接收第二比较信号的第一检测组件，仅在满足一个或多个预定条件时检测第二比较信号，并且至少基于与检测到的第二比较信号相关联的信息产生第一检测信号 比较信号。
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5.发明申请Systems and Methods for Regulating Power Conversion Systems with Output Detection and Synchronized Rectifying Mechanisms 有权用于调节具有输出检测和同步整流机构的电力转换系统的系统和方法公开(公告)号：US20150229223A1
公开(公告)日：2015-08-13
申请号：US14602944
申请日：2015-01-22
发明人： Yaming Cao , Zhenglan Xia , Yuan Lin , Qiang Luo , Lieyi Fang
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M1/08 , H02M3/33592 , H02M2001/0009 , H02M2001/0032 , H02M2001/0048 , Y02B70/1433 , Y02B70/1475 , Y02B70/16
摘要： System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes a first controller terminal and a second controller terminal. Additionally, the system controller is configured to receive an input signal at the first controller terminal, and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power conversion system. Moreover, the system controller is further configured to determine whether the input signal is larger than a first threshold at a first time, in response to the input signal being determined to be larger than the first threshold at the first time, determine whether the input signal is smaller than a second threshold at a second time.
摘要翻译： 用于调节电力转换系统的系统和方法。 用于调节功率转换系统的系统控制器包括第一控制器端子和第二控制器端子。 此外，系统控制器被配置为在第一控制器端接收输入信号，并且至少部分地基于输入信号在第二控制器端产生驱动信号以导通或关断晶体管，以便影响电流 与电力转换系统的次级绕组相关联。 此外，系统控制器还被配置为响应于在第一时间确定输入信号大于第一阈值，确定输入信号是否大于第一阈值，确定输入信号 在第二时间小于第二阈值。
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公开(公告)号：US10651747B2
公开(公告)日：2020-05-12
申请号：US16117698
申请日：2018-08-30
发明人： Yaming Cao , Qiang Luo , Lieyi Fang
摘要： System controller and method for regulating a power converter. For example, the system controller includes a first controller terminal and a second controller terminal. The system controller is configured to: receive, at the first controller terminal, an input signal; generate a drive signal based at least in part on the input signal, the drive signal being associated with an on-time period and an off-time period, the on-time period including a first beginning and a first end; and output, at the second controller terminal, the drive signal to a switch to close the switch during the on-time period and open the switch during the off-time period to affect a current associated with a secondary winding of the power converter. The system controller is further configured to detect a demagnetization period associated with the secondary winding based at least in part on the input signal.
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公开(公告)号：US10411604B2
公开(公告)日：2019-09-10
申请号：US15204324
申请日：2016-07-07
发明人： Yaming Cao , Zhenglan Xia , Yuan Lin , Qiang Luo , Lieyi Fang
摘要： System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes a first controller terminal and a second controller terminal. Additionally, the system controller is configured to receive an input signal at the first controller terminal, and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power conversion system. Moreover, the system controller is further configured to determine whether the input signal is larger than a first threshold at a first time, in response to the input signal being determined to be larger than the first threshold at the first time, determine whether the input signal is smaller than a second threshold at a second time.
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公开(公告)号：US10193443B2
公开(公告)日：2019-01-29
申请号：US15725228
申请日：2017-10-04
发明人： Yaming Cao , Dongze Yang , Qiang Luo , Lieyi Fang
摘要： System and method for regulating a power conversion system. For example, a system controller for regulating a power conversion system includes an amplifier, a variable-resistance component, a capacitor, and a modulation and drive component. The amplifier is configured to receive a reference signal and a feedback signal associated with an output signal of the power conversion system, the amplifier including an amplifier terminal. The variable-resistance component is associated with a first variable resistance value, the variable-resistance component including a first component terminal and a second component terminal, the first component terminal being coupled with the amplifier terminal. The capacitor includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being coupled with the second component terminal. The modulation and drive component includes a first terminal and a second terminal, the first terminal being coupled with the amplifier terminal.
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公开(公告)号：US10148189B2
公开(公告)日：2018-12-04
申请号：US15461283
申请日：2017-03-16
发明人： Yaming Cao , Qiang Luo , Lieyi Fang
摘要： System controller and method for regulating a power converter. For example, the system controller includes a first controller terminal and a second controller terminal. The system controller is configured to: receive, at the first controller terminal, an input signal; generate a drive signal based at least in part on the input signal, the drive signal being associated with an on-time period and an off-time period, the on-time period including a first beginning and a first end; and output, at the second controller terminal, the drive signal to a switch to close the switch during the on-time period and open the switch during the off-time period to affect a current associated with a secondary winding of the power converter. The system controller is further configured to detect a demagnetization period associated with the secondary winding based at least in part on the input signal.
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公开(公告)号：US09819262B2
公开(公告)日：2017-11-14
申请号：US14963088
申请日：2015-12-08
发明人： Yaming Cao , Dongze Yang , Qiang Luo , Lieyi Fang
CPC分类号： H02M3/156 , G05F1/10 , H02M2001/0003
摘要： System and method for regulating a power conversion system. For example, a system controller for regulating a power conversion system includes an amplifier, a variable-resistance component, a capacitor, and a modulation and drive component. The amplifier is configured to receive a reference signal and a feedback signal associated with an output signal of the power conversion system, the amplifier including an amplifier terminal. The variable-resistance component is associated with a first variable resistance value, the variable-resistance component including a first component terminal and a second component terminal, the first component terminal being coupled with the amplifier terminal. The capacitor includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being coupled with the second component terminal. The modulation and drive component includes a first terminal and a second terminal, the first terminal being coupled with the amplifier terminal.
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