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    SYSTEMS AND METHODS FOR CURRENT CONTROL OF POWER CONVERSION SYSTEMS
    85.
    发明申请
    SYSTEMS AND METHODS FOR CURRENT CONTROL OF POWER CONVERSION SYSTEMS 审中-公开

    公开(公告)号：US20170126137A1

    公开(公告)日：2017-05-04

    申请号：US15352133

    申请日：2016-11-15

    申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

    发明人： Yunchao Zhang ,  Lieyi Fang

    IPC分类号： H02M3/335 ,  H05B33/08 ,  H02M1/08

    CPC分类号： H02M3/33515 ,  H02M1/08 ,  H02M3/33507 ,  H02M2001/0009 ,  H05B33/0815

    摘要： System and method for regulating an output current of a power conversion system. An example system controller for regulating an output current of a power conversion system includes a driving component, a demagnetization detector, a current-regulation component, and a signal processing component. The driving component is configured to output a drive signal to a switch in order to affect a primary current flowing through a primary winding of the power conversion system. The demagnetization detector is configured to receive a feedback signal associated with an output voltage of the power conversion system and generate a detection signal based on at least information associated with the feedback signal. The current-regulation component is configured to receive the drive signal, the detection signal and a current-sensing signal and output a current-regulation signal based on at least information associated with the drive signal, the detection signal, and the current sensing signal.

    Systems and methods for zero voltage switching in power conversion systems
    86.
    发明授权
    Systems and methods for zero voltage switching in power conversion systems 有权

    公开(公告)号：US09641082B2

    公开(公告)日：2017-05-02

    申请号：US14485257

    申请日：2014-09-12

    申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

    发明人： Huawei Lv ,  Lieyi Fang

    IPC分类号： H02M3/335 ,  H02M1/00

    CPC分类号： H02M3/33507 ,  H02M3/33569 ,  H02M2001/0058 ,  Y02B70/1491

    摘要： System and method for regulating a power converter. A system for regulating a power converter includes a controller, a first switch, and a second switch. The controller is configured to generate a first switching signal and a second switching signal. The first switch is configured to receive the first switching signal, the first switch being coupled to an auxiliary winding of the power converter further including a primary winding and a secondary winding. The second switch is configured to receive the second switching signal and coupled to the primary winding of the power converter. The controller is further configured to, change, at a first time, the second switching signal to open the second switch, maintain, from the first time to a second time, the first switching signal to keep the first switch open, and change, at the second time, the first switching signal to close the first switch.

    Systems and methods for flyback power converters with switching frequency and peak current adjustments based on changes in feedback signals
    87.
    发明授权
    Systems and methods for flyback power converters with switching frequency and peak current adjustments based on changes in feedback signals 有权
    基于反馈信号变化的开关频率和峰值电流调整的反激式电源转换器的系统和方法

    公开(公告)号：US09584025B2

    公开(公告)日：2017-02-28

    申请号：US14488176

    申请日：2014-09-16

    申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

    发明人： Yuan Lin ,  Zhenglan Xia ,  Xiuhong Zhang ,  Lieyi Fang

    IPC分类号： H02M3/335 ,  H02M1/00

    CPC分类号： H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

    摘要： System and method for regulating a power converter. The system includes a first comparator configured to receive a first input signal and a second input signal and generate a first comparison signal based on at least information associated with the first input signal and the second input signal, a pulse-width-modulation generator configured to receive at least the first comparison signal and generate a modulation signal based on at least information associated with the first comparison signal, a driver component configured to receive the modulation signal and output a drive signal to a switch to adjust a primary current flowing through a primary winding of the power converter, and a voltage-change-rate detection component configured to sample the feedback signal to generate a first sampled signal for a first modulation period and to sample the feedback signal to generate a second sampled signal for a second modulation period.

    摘要翻译： 用于调节功率转换器的系统和方法。 该系统包括：第一比较器，被配置为接收第一输入信号和第二输入信号，并且至少基于与第一输入信号和第二输入信号相关联的信息产生第一比较信号;脉冲宽度调制发生器， 至少接收第一比较信号并且至少基于与第一比较信号相关联的信息产生调制信号，驱动器组件被配置为接收调制信号并将驱动信号输出到开关以调节流过初级 功率转换器的绕组，以及电压变化率检测部件，被配置为对所述反馈信号进行采样，以产生用于第一调制周期的第一采样信号，并对所述反馈信号进行采样以产生用于第二调制周期的第二采样信号。

    System and method providing reliable over current protection for power converter
    88.
    发明授权
    System and method providing reliable over current protection for power converter 有权
    为电源转换器提供可靠的过流保护的系统和方法

    公开(公告)号：US09577536B2

    公开(公告)日：2017-02-21

    申请号：US14639607

    申请日：2015-03-05

    申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

    发明人： Dongze Yang ,  Xiaomin Huang ,  Xiaozhi Kang ,  Yuan Lin ,  Huawei Lyu ,  Lieyi Fang

    IPC分类号： H02M3/335 ,  H02M1/32 ,  H02H7/12 ,  H02H9/02

    CPC分类号： H02H7/125 ,  H02H7/12 ,  H02H9/025 ,  H02M1/08 ,  H02M1/32 ,  H02M1/44 ,  H02M3/33507 ,  H02M3/33523 ,  H02M2001/0009

    摘要： System controller and method for protecting a power converter. The system controller includes a first controller terminal configured to output a drive signal to a switch to affect a first current flowing through a primary winding of a power converter. The power converter further includes a secondary winding coupled to the primary winding, and the drive signal is associated with one or more switching periods. Additionally, the system controller includes a second controller terminal configured to receive a sensing voltage from a sensing resistor. The sensing voltage represents a magnitude of the first current flowing through the primary winding of the power converter. The system controller is configured to process information associated with the sensing voltage and a reference voltage, and determine whether an average output current of the power converter is larger than a current threshold.

    摘要翻译： 用于保护电源转换器的系统控制器和方法。 系统控制器包括第一控制器端子，其被配置为将驱动信号输出到开关以影响流过功率转换器的初级绕组的第一电流。 功率转换器还包括耦合到初级绕组的次级绕组，并且驱动信号与一个或多个开关周期相关联。 此外，系统控制器包括被配置为从感测电阻器接收感测电压的第二控制器端子。 感测电压表示流过功率转换器的初级绕组的第一电流的大小。 系统控制器被配置为处理与感测电压和参考电压相关联的信息，并且确定功率转换器的平均输出电流是否大于电流阈值。

    SYSTEMS AND METHODS FOR TWO-LEVEL PROTECTION OF POWER CONVERSION SYSTEMS
    89.
    发明申请
    SYSTEMS AND METHODS FOR TWO-LEVEL PROTECTION OF POWER CONVERSION SYSTEMS 审中-公开
    电力转换系统的两级保护系统与方法

    公开(公告)号：US20170033699A1

    公开(公告)日：2017-02-02

    申请号：US15220223

    申请日：2016-07-26

    申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

    发明人： Xiaomin Huang ,  Huawei Lv ,  Chao Yao ,  Qiang Luo ,  Lieyi Fang

    IPC分类号： H02M3/335 ,  H02M1/08 ,  H02M1/32

    CPC分类号： H02M3/33515 ,  H02M1/08 ,  H02M1/32 ,  H02M3/33507 ,  H02M2001/0009

    摘要： Systems and methods are provided for protecting a power conversion system. A system controller includes a two-level protection component and a driving component. The two-level protection component is configured to detect an output power of a power conversion system and generate a protection signal based on at least information associated with the output power. The driving component is configured to generate a drive signal based on at least information associated with the protection signal and output the drive signal to a switch associated with a primary current flowing through a primary winding of the power conversion system. The driving component is further configured to generate the drive signal corresponding to a first switching frequency to generate the output power equal to a first power threshold and generate the drive signal corresponding to a second switching frequency to generate the output power equal to a second power threshold.

    摘要翻译： 提供了用于保护电力转换系统的系统和方法。 系统控制器包括两级保护组件和驱动组件。 两级保护组件被配置为检测功率转换系统的输出功率，并且至少基于与输出功率相关联的信息产生保护信号。 驱动部件被配置为基于至少与保护信号相关联的信息产生驱动信号，并将驱动信号输出到与流过功率转换系统的初级绕组的初级电流相关联的开关。 驱动部件还被配置为产生对应于第一切换频率的驱动信号，以产生等于第一功率阈值的输出功率，并产生与第二切换频率对应的驱动信号，以产生等于第二功率阈值的输出功率 。

    Systems and methods for dimming control using system controllers
    90.
    发明授权
    Systems and methods for dimming control using system controllers 有权
    使用系统控制器进行调光控制的系统和方法

    公开(公告)号：US09554432B2

    公开(公告)日：2017-01-24

    申请号：US14819200

    申请日：2015-08-05

    申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

    发明人： Liqiang Zhu ,  Jun Zhou ,  Lieyi Fang

    IPC分类号： H05B33/08

    CPC分类号： H05B33/0815 ,  H05B33/0845 ,  H05B33/0851 ,  H05B33/0887

    摘要： System and method for dimming control. The system includes a system controller, a transistor, and a resistor. The system controller includes a first controller terminal and a second controller terminal. The transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal. The resistor including a first resistor terminal and a second resistor terminal. The first transistor terminal is coupled, directly or indirectly, to the second controller terminal. The first resistor terminal is coupled to the second transistor terminal. The second resistor terminal is coupled to the third transistor terminal. The system controller is configured to receive an input signal at the first controller terminal and to generate an output signal at the second controller terminal. The transistor is configured to receive the output signal at the first transistor terminal and to change between a first condition and a second condition.

    摘要翻译： 调光控制系统及方法。 该系统包括系统控制器，晶体管和电阻器。 系统控制器包括第一控制器端子和第二控制器端子。 晶体管包括第一晶体管端子，第二晶体管端子和第三晶体管端子。 电阻器包括第一电阻器端子和第二电阻器端子。 第一晶体管端子直接或间接耦合到第二控制器端子。 第一电阻端子耦合到第二晶体管端子。 第二电阻端子耦合到第三晶体管端子。 系统控制器被配置为在第一控制器端接收输入信号并在第二控制器端产生输出信号。 晶体管被配置为在第一晶体管端子处接收输出信号并且在第一状态和第二状态之间改变。