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51. 发明授权

US07394634B2 Control system and method with constant maximum current for power converter protection 有权
标题翻译：功率转换器保护恒定最大电流的控制系统和方法
公开(公告)号：US07394634B2
公开(公告)日：2008-07-01
申请号：US11213657
申请日：2005-08-26
申请人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
发明人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
IPC分类号： H02H7/00
CPC分类号： H02M3/33507 , H02M1/32
摘要： System and method for protecting a power converter. The system includes a first comparator configured to receive a threshold signal and a first signal and to generate a comparison signal. The first signal is a sum of a second signal and a third signal, and the third signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control the input current for the power converter. An amplitude for the first signal becomes larger if an amplitude for the input voltage becomes larger. The second signal is generated by receiving an input voltage for the power converter, converting the received input voltage to a fourth signal, and converting the fourth signal to the second 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阈值信号和第一信号并产生比较信号的第一比较器。第一信号是第二信号和第三信号的和，并且第三信号与功率转换器的输入电流相关联。另外，该系统包括：脉冲宽度调制发生器，被配置为接收比较信号并响应于比较信号产生调制信号;以及开关，被配置为接收调制信号并控制功率转换器的输入电流。如果输入电压的幅度变大，则第一信号的振幅变大。通过接收功率转换器的输入电压，将接收到的输入电压转换为第四信号，并将第四信号转换为第二信号，产生第二信号。

52. 发明授权

US08587226B2 Driver system and method with cyclic configuration for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps 有权
标题翻译：用于多个冷阴极荧光灯和/或外部电极荧光灯的循环配置的驱动器系统和方法
公开(公告)号：US08587226B2
公开(公告)日：2013-11-19
申请号：US12958275
申请日：2010-12-01
申请人： Lieyi Fang , Changshan Zhang , Zhiliang Chen , Shifeng Zhao
发明人： Lieyi Fang , Changshan Zhang , Zhiliang Chen , Shifeng Zhao
IPC分类号： H05B37/02 , H05B41/16
CPC分类号： H05B41/2822
摘要： System and method for driving a plurality of cold-cathode fluorescent lamps. The system includes a subsystem configured to receive at least a DC voltage and generate a first AC voltage in response to at least the DC voltage, a power converter configured to receive the first AC voltage and convert the first AC voltage to at least a second AC voltage, and a plurality of current balancing devices. Each of the plurality of current balancing devices is configured to receive two currents and balance the two currents. The power converter and the plurality of current balancing devices are capable of being directly or indirectly coupled to a plurality of cold-cathode fluorescent lamps.
摘要翻译：用于驱动多个冷阴极荧光灯的系统和方法。该系统包括被配置为接收至少DC电压并响应于至少DC电压产生第一AC电压的子系统，被配置为接收第一AC电压并将第一AC电压转换为至少第二AC 电压和多个电流平衡装置。多个电流平衡装置中的每一个配置成接收两个电流并平衡两个电流。功率转换器和多个电流平衡装置能够直接或间接耦合到多个冷阴极荧光灯。

53. 发明授权

US08344643B2 Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps 有权
标题翻译：用于多个冷阴极荧光灯和/或外部电极荧光灯的驱动器系统和方法
公开(公告)号：US08344643B2
公开(公告)日：2013-01-01
申请号：US12764747
申请日：2010-04-21
申请人： Lieyi Fang , Changshan Zhang , Zhiliang Chen , Shifeng Zhao
发明人： Lieyi Fang , Changshan Zhang , Zhiliang Chen , Shifeng Zhao
IPC分类号： H05B37/00
CPC分类号： H05B41/2822
摘要： Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps. According to an embodiment, the present invention provides a system for driving a plurality of cold-cathode fluorescent lamps. The system includes a subsystem configured to receive at least a DC voltage and generate a first AC voltage in response to at least the DC voltage. The system also includes a power converter configured to receive the first AC voltage and convert the first AC voltage to at least a second AC voltage. The system further includes a plurality of current balancing devices. Each of the plurality of current balancing devices is configured to receive two currents and balance the two currents. The plurality of current balancing devices includes at least a first current balancing device, a second current balancing device, and a third current balancing device. In addition, the system includes a plurality of lamp pairs.
摘要翻译：用于多个冷阴极荧光灯和/或外部电极荧光灯的驱动器系统和方法。根据实施例，本发明提供一种用于驱动多个冷阴极荧光灯的系统。该系统包括被配置为接收至少DC电压并响应于至少DC电压产生第一AC电压的子系统。该系统还包括功率转换器，其被配置为接收第一AC电压并将第一AC电压转换为至少第二AC电压。该系统还包括多个电流平衡装置。多个电流平衡装置中的每一个配置成接收两个电流并平衡两个电流。多个电流平衡装置至少包括第一电流平衡装置，第二电流平衡装置和第三电流平衡装置。另外，该系统包括多个灯对。

54. 发明授权

US08330525B2 System and method for driving bipolar transistors in switching power conversion 有权
标题翻译：用于在开关电源转换中驱动双极晶体管的系统和方法
公开(公告)号：US08330525B2
公开(公告)日：2012-12-11
申请号：US13164569
申请日：2011-06-20
申请人： Lieyi Fang , Shifeng Zhao , Zhiliang Chen , Zhenhua Li
发明人： Lieyi Fang , Shifeng Zhao , Zhiliang Chen , Zhenhua Li
IPC分类号： H03K17/687
CPC分类号： H03K17/60 , H02M1/08 , H02M3/33507 , H03K17/0826 , H03K17/22 , H03K17/605 , H03K17/64
摘要： A system and method for driving a bipolar junction transistor is provided. The system includes a first transistor including a first gate, a first terminal, and a second terminal. The first gate is configured to receive a first control signal. Additionally, the system includes a second transistor including a second gate, a third terminal, and a fourth terminal. The second gate is configured to receive a second control signal. Moreover, the system includes a first resistor including a fifth terminal and a sixth terminal. The fifth terminal is connected to the first terminal, and the sixth terminal is biased to a first predetermined voltage. The fourth terminal is biased to a second predetermined voltage. The second terminal and the third terminal are connected at a node, and the node is connected to a base for a bipolar junction transistor.
摘要翻译：提供一种用于驱动双极结型晶体管的系统和方法。该系统包括第一晶体管，其包括第一栅极，第一端子和第二端子。第一门被配置为接收第一控制信号。另外，该系统包括包括第二栅极，第三端子和第四端子的第二晶体管。第二门被配置为接收第二控制信号。此外，该系统包括包括第五端子和第六端子的第一电阻器。第五端子连接到第一端子，第六端子被偏置到第一预定电压。第四端子偏置到第二预定电压。第二端子和第三端子连接在节点处，并且节点连接到用于双极结型晶体管的基极。

55. 发明申请

US20110248770A1 SYSTEM AND METHOD FOR DRIVING BIPOLAR TRANSISTORS IN SWITCHING POWER CONVERSION 有权
标题翻译：用于在开关电源转换中驱动双极晶体管的系统和方法
公开(公告)号：US20110248770A1
公开(公告)日：2011-10-13
申请号：US13164569
申请日：2011-06-20
申请人： Lieyi Fang , Shifeng Zhao , Zhiliang Chen , Zhenhua Li
发明人： Lieyi Fang , Shifeng Zhao , Zhiliang Chen , Zhenhua Li
IPC分类号： H03K17/687
CPC分类号： H03K17/60 , H02M1/08 , H02M3/33507 , H03K17/0826 , H03K17/22 , H03K17/605 , H03K17/64
摘要： A system and method for driving a bipolar junction transistor is provided. The system includes a first transistor including a first gate, a first terminal, and a second terminal. The first gate is configured to receive a first control signal. Additionally, the system includes a second transistor including a second gate, a third terminal, and a fourth terminal. The second gate is configured to receive a second control signal. Moreover, the system includes a first resistor including a fifth terminal and a sixth terminal. The fifth terminal is connected to the first terminal, and the sixth terminal is biased to a first predetermined voltage. The fourth terminal is biased to a second predetermined voltage. The second terminal and the third terminal are connected at a node, and the node is connected to a base for a bipolar junction transistor.
摘要翻译：提供一种用于驱动双极结型晶体管的系统和方法。该系统包括第一晶体管，其包括第一栅极，第一端子和第二端子。第一门被配置为接收第一控制信号。另外，该系统包括包括第二栅极，第三端子和第四端子的第二晶体管。第二门被配置为接收第二控制信号。此外，该系统包括包括第五端子和第六端子的第一电阻器。第五端子连接到第一端子，第六端子被偏置到第一预定电压。第四端子偏置到第二预定电压。第二端子和第三端子连接在节点处，并且节点连接到用于双极结型晶体管的基极。

56. 发明授权

US08018745B2 System and method providing over current and over power protection for power converter 有权
标题翻译：为电源转换器提供过流和过电源保护的系统和方法
公开(公告)号：US08018745B2
公开(公告)日：2011-09-13
申请号：US12690808
申请日：2010-01-20
申请人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
发明人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
IPC分类号： H02H7/122
CPC分类号： H02H7/1203 , H02H7/12
摘要： System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.
摘要翻译：保护电源转换器的系统和方法。一种系统包括被配置为产生阈值信号的阈值发生器，以及配置成接收阈值信号和第一信号并产生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：脉冲宽度调制发生器，被配置为接收比较信号并响应于比较信号产生调制信号;以及开关，被配置为接收调制信号并调整功率转换器的输入电流。阈值信号与作为时间的函数的阈值幅度相关联。阈值幅度在第一周期期间以第一斜率随时间增加，并且阈值幅度在第二周期期间以第二斜率随时间增加。第一斜坡和第二斜坡不同。

57. 发明授权

US07880407B2 Driver system and method with cyclic configuration for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps 有权
标题翻译：用于多个冷阴极荧光灯和/或外部电极荧光灯的循环配置的驱动器系统和方法
公开(公告)号：US07880407B2
公开(公告)日：2011-02-01
申请号：US11450904
申请日：2006-06-08
申请人： Lieyi Fang , Changshan Zhang , Zhiliang Chen , Shifeng Zhao
发明人： Lieyi Fang , Changshan Zhang , Zhiliang Chen , Shifeng Zhao
IPC分类号： H05B37/00 , H05B41/16
CPC分类号： H05B41/2822
摘要： System and method for driving a plurality of cold-cathode fluorescent lamps. The system includes a subsystem configured to receive at least a DC voltage and generate a first AC voltage in response to at least the DC voltage, a power converter configured to receive the first AC voltage and convert the first AC voltage to at least a second AC voltage, and a plurality of current balancing devices. Each of the plurality of current balancing devices is configured to receive two currents and balance the two currents. The power converter and the plurality of current balancing devices are capable of being directly or indirectly coupled to a plurality of cold-cathode fluorescent lamps.
摘要翻译：用于驱动多个冷阴极荧光灯的系统和方法。该系统包括被配置为接收至少DC电压并响应于至少DC电压产生第一AC电压的子系统，被配置为接收第一AC电压并将第一AC电压转换为至少第二AC 电压和多个电流平衡装置。多个电流平衡装置中的每一个配置成接收两个电流并平衡两个电流。功率转换器和多个电流平衡装置能够直接或间接耦合到多个冷阴极荧光灯。

58. 发明申请

US20100165676A1 SYSTEM AND METHOD PROVIDING OVER CURRENT AND OVER POWER PROTECTION FOR POWER CONVERTER 有权
标题翻译：为电源转换器提供电流和功率保护的系统和方法
公开(公告)号：US20100165676A1
公开(公告)日：2010-07-01
申请号：US12690808
申请日：2010-01-20
申请人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
发明人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
IPC分类号： H02H7/10
CPC分类号： H02H7/1203 , H02H7/12
摘要： System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.
摘要翻译：保护电源转换器的系统和方法。一种系统包括被配置为产生阈值信号的阈值发生器，以及配置成接收阈值信号和第一信号并产生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：脉冲宽度调制发生器，被配置为接收比较信号并响应于比较信号产生调制信号;以及开关，被配置为接收调制信号并调整功率转换器的输入电流。阈值信号与作为时间的函数的阈值幅度相关联。阈值幅度在第一周期期间以第一斜率随时间增加，并且阈值幅度在第二周期期间以第二斜率随时间增加。第一斜坡和第二斜坡不同。

59. 发明授权

US07684220B2 System and method providing over current and over power protection for power converter 有权
标题翻译：为电源转换器提供过流和过电源保护的系统和方法
公开(公告)号：US07684220B2
公开(公告)日：2010-03-23
申请号：US11752926
申请日：2007-05-24
申请人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
发明人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
IPC分类号： H02H7/122
CPC分类号： H02H7/1203 , H02H7/12
摘要： System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.
摘要翻译：保护电源转换器的系统和方法。一种系统包括被配置为产生阈值信号的阈值发生器，以及配置成接收阈值信号和第一信号并产生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：脉冲宽度调制发生器，被配置为接收比较信号并响应于比较信号产生调制信号;以及开关，被配置为接收调制信号并调整功率转换器的输入电流。阈值信号与作为时间的函数的阈值幅度相关联。阈值幅度在第一周期期间以第一斜率随时间增加，并且阈值幅度在第二周期期间以第二斜率随时间增加。第一斜坡和第二斜坡不同。

60. 发明申请

US20080297965A1 CONTROL SYSTEM AND METHOD WITH CONSTANT MAXIMUM CURRENT FOR POWER CONVERTER PROTECTION 有权
标题翻译：用于电源转换器保护的恒定最大电流的控制系统和方法
公开(公告)号：US20080297965A1
公开(公告)日：2008-12-04
申请号：US12125033
申请日：2008-05-21
申请人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
发明人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
IPC分类号： H02H7/00
CPC分类号： H02M3/33507 , H02M1/32
摘要： System and method for protecting a power converter. The system includes a first comparator configured to receive a threshold signal and a first signal and to generate a comparison signal. The first signal is a sum of a second signal and a third signal, and the third signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control the input current for the power converter. An amplitude for the first signal becomes larger if an amplitude for the input voltage becomes larger. The second signal is generated by receiving an input voltage for the power converter, converting the received input voltage to a fourth signal, and converting the fourth signal to the second 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阈值信号和第一信号并产生比较信号的第一比较器。第一信号是第二信号和第三信号的和，并且第三信号与功率转换器的输入电流相关联。另外，该系统包括：脉冲宽度调制发生器，被配置为接收比较信号并响应于比较信号产生调制信号;以及开关，被配置为接收调制信号并控制功率转换器的输入电流。如果输入电压的幅度变大，则第一信号的振幅变大。通过接收功率转换器的输入电压，将接收到的输入电压转换为第四信号，并将第四信号转换为第二信号，产生第二信号。

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