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    Isolated switching converter with secondary side modulation and control method
    3.
    发明授权
    Isolated switching converter with secondary side modulation and control method 有权
    具有次级侧调制和控制方式的隔离开关变换器

    公开(公告)号：US09407155B2

    公开(公告)日：2016-08-02

    申请号：US14512251

    申请日：2014-10-10

    Applicant: Chengdu Monolithic Power Systems Co., Ltd.

    Inventor： Siran Wang ,  Eric Yang ,  John Wiggenhorn ,  Qiming Zhao

    IPC: H02M3/335

    CPC classification number: H02M3/33592 ,  Y02B70/1475

    Abstract: A controller of an isolated switching converter includes an error amplifying circuit, a modulation signal generator, a first comparison circuit, a primary off detection circuit, a secondary logic circuit, an isolation circuit and a primary logic circuit. The error amplifying circuit generates a compensation signal based on the difference between a reference signal and a feedback signal. The first comparison circuit compares the compensation signal with a modulation signal generated by the modulation signal generator and generates a first comparison signal. The primary off detection circuit detects whether the primary switch is off and generates a primary off detection signal. The secondary logic circuit generates a secondary control signal to control the secondary switch based on the first comparison signal and the primary off detection signal. The isolation circuit receives the first comparison signal and generates a synchronous signal electrically isolated from the first comparison signal. The primary logic circuit generates a primary control signal to control the primary switch based on the synchronous signal.

    Abstract translation: 隔离开关转换器的控制器包括误差放大电路，调制信号发生器，第一比较电路，初级截止检测电路，次级逻辑电路，隔离电路和主逻辑电路。 误差放大电路基于参考信号和反馈信号之间的差产生补偿信号。 第一比较电路将补偿信号与由调制信号发生器产生的调制信号进行比较，并产生第一比较信号。 主断路检测电路检测主开关是否断开并产生初次断开检测信号。 次级逻辑电路基于第一比较信号和初级截止检测信号产生辅助控制信号以控制次级开关。 隔离电路接收第一比较信号并产生与第一比较信号电隔离的同步信号。 主逻辑电路基于同步信号产生主控制信号以控制主开关。

    BATTERY BALANCING CIRCUIT BALANCING VOLTAGES BETWEEN BATTERY UNITS WITH A FLY CAPACITOR
    4.
    发明申请
    BATTERY BALANCING CIRCUIT BALANCING VOLTAGES BETWEEN BATTERY UNITS WITH A FLY CAPACITOR 审中-公开

    公开(公告)号：US20200021118A1

    公开(公告)日：2020-01-16

    申请号：US16032004

    申请日：2018-07-10

    Applicant: Chengdu Monolithic Power Systems Co., Ltd.

    Inventor： Rui Wang ,  Min Xu ,  Qiming Zhao

    IPC: H02J7/00 ,  H01M10/44 ,  H01M10/42

    Abstract: A battery balancing method and circuit for balancing the voltages between battery units with a fly capacitor. In a first time period of a switching cycle, the first battery unit is used to charge the fly capacitor or the first battery unit is used to discharge the fly capacitor, depending on which of the first battery unit and the fly capacitor having a larger voltage value; and in a second time period of the switching cycle, the second battery unit is used to charge the fly capacitor or the second battery unit is used to discharge the fly capacitor, depending on which of the second battery unit and the fly capacitor having a larger voltage value

    Battery charging circuit with high capacity, control circuit and associated control method
    5.
    发明授权
    Battery charging circuit with high capacity, control circuit and associated control method 有权

    公开(公告)号：US10116155B2

    公开(公告)日：2018-10-30

    申请号：US15387612

    申请日：2016-12-21

    Applicant: Chengdu Monolithic Power Systems Co., Ltd.

    Inventor： Min Xu ,  Qiming Zhao

    IPC: H02J7/00

    Abstract: A battery charging circuit has a first switching circuit and a second switching circuit which are coupled in parallel. A control circuit has a plurality of feedback control loops, a logic integrated circuit, a first logic circuit and a second logic circuit, wherein the plurality of feedback control loops provides a plurality of feedback control signals, the logic integrated circuit provides a logic integrated signal based on the plurality of feedback control signals, the frequency dividing circuit provides a first frequency dividing signal and a second frequency dividing signal based on the logic integrated signal, the first logic circuit controls the first switching circuit based on the first frequency dividing signal and a first duration signal, the second logic circuit controls the second switching circuit based on the second frequency dividing signal and a second duration signal.

    SINGLE STAGE LED DRIVER SYSTEM, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD
    6.
    发明申请
    SINGLE STAGE LED DRIVER SYSTEM, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD 有权
    单级LED驱动器系统，控制电路和相关控制方法

    公开(公告)号：US20150208472A1

    公开(公告)日：2015-07-23

    申请号：US14603245

    申请日：2015-01-22

    Applicant: Chengdu Monolithic Power Systems Co., Ltd.

    Inventor： Bairen Liu ,  Qiming Zhao ,  Licheng Sheng ,  Bo Yu ,  Hongqiang Qin ,  Eric Yang

    IPC: H05B33/08

    CPC classification number: H05B33/0815 ,  Y02B20/346

    Abstract: A light-emitting element driver system has a power conversion circuit, a second switch and a control circuit, the power conversion circuit has a primary circuit, a transformer, a first rectified circuit and a second rectified circuit, the second rectified circuit provides a first signal, the second switch has a first terminal coupled to an output terminal of the first rectified circuit and a second terminal to provide a second signal, when a dimming signal is in a first state, the control circuit provides a first control signal to control the power conversion circuit based on the first signal, and meanwhile provides a second control signal to control the second switch based on the second signal.

    Abstract translation: 发光元件驱动器系统具有功率转换电路，第二开关和控制电路，功率转换电路具有初级电路，变压器，第一整流电路和第二整流电路，第二整流电路提供第一 信号，第二开关具有耦合到第一整流电路的输出端的第一端子和第二端子以提供第二信号，当调光信号处于第一状态时，控制电路提供第一控制信号以控制 功率转换电路，同时基于第二信号提供第二控制信号来控制第二开关。

    BATTERY DISCHARGE CIRCUIT AND DISCHARGE METHOD WITH OVER DISCHARGE PROTECTION
    7.
    发明申请
    BATTERY DISCHARGE CIRCUIT AND DISCHARGE METHOD WITH OVER DISCHARGE PROTECTION 有权
    电池放电电路和放电方法具有放电保护功能

    公开(公告)号：US20150102787A1

    公开(公告)日：2015-04-16

    申请号：US14509881

    申请日：2014-10-08

    Applicant: Chengdu Monolithic Power Systems Co., Ltd.

    Inventor： Min Xu ,  Qiming Zhao

    IPC: H02M3/04 ,  H02H7/12

    CPC classification number: H02M3/04 ,  H02J7/0065

    Abstract: A battery discharge circuit has a switching circuit and a controller. The switching circuit is coupled between a battery and a load. The controller is configured to generate a control signal to control the switching circuit. When the battery voltage drops below a first reference voltage, the controller adjusts the control signal to regulate the battery voltage to be equal to the first reference voltage.

    Abstract translation: 电池放电电路具有开关电路和控制器。 开关电路耦合在电池和负载之间。 控制器被配置为产生控制信号以控制开关电路。 当电池电压低于第一参考电压时，控制器调节控制信号以将电池电压调节为等于第一参考电压。

    POWER FACTOR CORRECTION CIRCUIT WITH DIGITAL CONTROL SCHEME AND ASSOCIATED CONTROL METHOD
    10.
    发明申请
    POWER FACTOR CORRECTION CIRCUIT WITH DIGITAL CONTROL SCHEME AND ASSOCIATED CONTROL METHOD 有权
    具有数字控制方案的功率因数校正电路及相关控制方法

    公开(公告)号：US20150303790A1

    公开(公告)日：2015-10-22

    申请号：US14692465

    申请日：2015-04-21

    Applicant: Chengdu Monolithic Power Systems Co., Ltd.

    Inventor： Sicong Lin ,  Wenbin Lu ,  Wangmiao Hu ,  Lijie Jiang ,  Qiming Zhao ,  Guangchao Zhang

    IPC: H02M1/42 ,  H02M7/217

    CPC classification number: H02M1/4225 ,  H02M2001/0012 ,  H02M2001/0019 ,  Y02B70/126 ,  Y02P80/112

    Abstract: A PFC circuit having a switching circuit and a control circuit, the control circuit controls an operation mode of the switching circuit based on an input current and a switching frequency of the switching circuit, when the switching circuit works under a continuous current mode, the switching circuit is turned ON when the input current is less than an OFF current reference signal, and when the switching circuit works under a first discontinuous mode or a second discontinuous mode, the switching circuit is turned ON after a turn ON delay time period when the input current is less than the OFF current reference signal.

    Abstract translation: 一种具有开关电路和控制电路的PFC电路，当开关电路在连续电流模式下工作时，控制电路基于开关电路的输入电流和开关频率来控制开关电路的工作模式，开关 当输入电流小于OFF电流参考信号时，电路接通，并且当开关电路在第一不连续模式或第二不连续模式下工作时，开关电路在接通延迟时间段之后导通 电流小于OFF电流参考信号。

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