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    TRANSMITTING/RECEIVING COMMAND METHOD APPLIED BETWEEN A MASTER CONTROLLER AND A SLAVE CONTROLLER OF A POWER CONVERTER
    1.
    发明申请
    TRANSMITTING/RECEIVING COMMAND METHOD APPLIED BETWEEN A MASTER CONTROLLER AND A SLAVE CONTROLLER OF A POWER CONVERTER 审中-公开

    公开(公告)号：US20200336062A1

    公开(公告)日：2020-10-22

    申请号：US16594058

    申请日：2019-10-06

    Applicant: Leadtrend Technology Corp.

    Inventor： Yao-Tsung Chen ,  Kuan-Hsien Chou

    IPC: H02M1/42 ,  H02M1/38 ,  H02M1/096

    Abstract: A transmitting/receiving command method applied between a master controller and a slave controller of a power converter includes enabling the master controller and the slave controller; a controller of the master controller and the slave controller detecting a node voltage of a pin of the controller; the controller transmitting a first command of a plurality of first commands to another controller of the master controller and the slave controller through the pin when the node voltage is less than a predetermined voltage, wherein the predetermined voltage corresponds to over temperature protection of the power converter; and the controller detecting the node voltage again after the controller receives a first return signal transmitted by the another controller.

    Power factor correction controller and operational method thereof
    2.
    发明授权
    Power factor correction controller and operational method thereof 有权

    公开(公告)号：US11462995B2

    公开(公告)日：2022-10-04

    申请号：US16953293

    申请日：2020-11-19

    Applicant: Leadtrend Technology Corp.

    Inventor： Ming-Chang Tsou ,  Kuan-Hsien Chou ,  Yi-Chuan Tsai ,  Cheng-Tsung Ho

    IPC: H02M1/42 ,  H02M1/00

    Abstract: A power factor correction (PFC) controller applied to a primary side of a power converter includes a feedback pin, a sensing pin, a current detecting circuit, an output voltage detecting circuit, and a determination circuit. The current detecting circuit is coupled to the feedback pin and the sensing pin for detecting an output current of a secondary side of the power converter according to a feedback voltage of the feedback pin and a sensing voltage of the sensing pin. The output voltage detecting circuit is coupled to the feedback pin for detecting an output voltage of the secondary side of the power converter according to the feedback voltage. The determination circuit is coupled to the current detecting circuit and the output voltage detecting circuit for turning on or turning off a PFC circuit coupled to the power converter according to the output current and the output voltage.

    POWER FACTOR CORRECTION CONTROLLER AND OPERATIONAL METHOD THEREOF
    4.
    发明申请
    POWER FACTOR CORRECTION CONTROLLER AND OPERATIONAL METHOD THEREOF 有权

    公开(公告)号：US20210281166A1

    公开(公告)日：2021-09-09

    申请号：US16953293

    申请日：2020-11-19

    Applicant: Leadtrend Technology Corp.

    Inventor： Ming-Chang Tsou ,  Kuan-Hsien Chou ,  Yi-Chuan Tsai ,  Cheng-Tsung Ho

    IPC: H02M1/42

    Abstract: A power factor correction (PFC) controller applied to a primary side of a power converter includes a feedback pin, a sensing pin, a current detecting circuit, an output voltage detecting circuit, and a determination circuit. The current detecting circuit is coupled to the feedback pin and the sensing pin for detecting an output current of a secondary side of the power converter according to a feedback voltage of the feedback pin and a sensing voltage of the sensing pin. The output voltage detecting circuit is coupled to the feedback pin for detecting an output voltage of the secondary side of the power converter according to the feedback voltage. The determination circuit is coupled to the current detecting circuit and the output voltage detecting circuit for turning on or turning off a PFC circuit coupled to the power converter according to the output current and the output voltage.

    SAMPLE-AND-HOLD CIRCUIT FOR GENERATING A VARIABLE SAMPLE SIGNAL OF A POWER CONVERTER AND METHOD THEREOF
    7.
    发明申请
    SAMPLE-AND-HOLD CIRCUIT FOR GENERATING A VARIABLE SAMPLE SIGNAL OF A POWER CONVERTER AND METHOD THEREOF 有权
    用于产生功率转换器的可变采样信号的采样和保持电路及其方法

    公开(公告)号：US20170077820A1

    公开(公告)日：2017-03-16

    申请号：US15252241

    申请日：2016-08-31

    Applicant: Leadtrend Technology Corp.

    Inventor： Hsin-Hung Lu ,  Kuan-Hsien Chou

    IPC: H02M3/335

    CPC classification number: H02M3/33523 ,  H02M2001/0009 ,  H02M2001/0025

    Abstract: A sample-and-hold circuit includes a first voltage generation unit, a second voltage generation unit, a stabilization capacitor. The first voltage generation unit generates a first voltage according to a first predetermined delay time and a voltage corresponding to an auxiliary winding of a power converter. The second voltage generation unit generates a second voltage according to K multiple of a discharge time of a secondary side of the power converter during a previous period of the power converter and the voltage, wherein K

    Abstract translation: 采样保持电路包括第一电压产生单元，第二电压产生单元，稳定电容器。 第一电压产生单元根据第一预定延迟时间和对应于功率转换器的辅助绕组的电压产生第一电压。 第二电压产生单元根据功率转换器的前一周期中的功率转换器的次级侧的放电时间的K倍和电压（K <1）产生第二电压。 当放电时间的K倍和第二预定延迟时间的和导致与功率转换器的当前周期相对应的电压的第一谷值时，第二电压产生单元输出第二电压。 当总和滞后于第一谷时，第一电压产生单元输出第一电压。

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