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24 条记录 (耗时 0.019 秒)

    ADAPTIVE BUCK CONVERTER WITH MONITOR CIRCUIT AND CHARGING CABLE USING THE SAME
    1.
    发明申请
    ADAPTIVE BUCK CONVERTER WITH MONITOR CIRCUIT AND CHARGING CABLE USING THE SAME 审中-公开

    公开(公告)号：US20180233937A1

    公开(公告)日：2018-08-16

    申请号：US15951759

    申请日：2018-04-12

    申请人： RICHTEK TECHNOLOGY CORPORATION

    发明人： Ta-Yung YANG ,  Jing-Meng LIU ,  Isaac Y. CHEN ,  Tzu-Chen LIN

    IPC分类号： H02J7/00 ,  H02M3/158

    CPC分类号： H02J7/0052 ,  H02J7/0068 ,  H02J7/0091 ,  H02J2007/0059 ,  H02J2007/0062 ,  H02M3/1582

    摘要： An adaptive buck converter of a charging cable includes: a power receiving interface for receiving a DC voltage and a cable current from a cable; a terminal communication interface for transmitting a charging voltage and a charging current to a connection terminal of the charging cable and for receiving a communication signal generated by a mobile device from the connection terminal; a power converting circuit for receiving the DC voltage and the cable current from the power receiving interface and for generating the charging voltage and the charging current; a monitor circuit arranged to operably detect the DC voltage or the cable current; and a data processing circuit configured for controlling the power converting circuit according to the communication signal. The data processing circuit further communicates with the mobile device through the terminal communication interface and the connection terminal in response to a detection result of the monitor circuit.

    CONTROL CIRCUIT AND METHOD OF A LED DRIVER
    2.
    发明申请
    CONTROL CIRCUIT AND METHOD OF A LED DRIVER 有权
    LED驱动器的控制电路和方法

    公开(公告)号：US20160219662A1

    公开(公告)日：2016-07-28

    申请号：US15008289

    申请日：2016-01-27

    申请人： Richtek Technology Corporation

    发明人： Jyun-Che HO ,  Isaac Y. CHEN ,  Yi-Wei LEE

    IPC分类号： H05B33/08

    CPC分类号： H05B33/0815 ,  H05B33/0848

    摘要： A control circuit of a LED driver utilizes a counter to acquire a cycle and a conduction time or a non-conduction time of an AC phase-cut voltage outputted by a TRIAC dimmer. A bleeding signal is determined according to the cycle and the conduction time or the non-conduction time and used for adjusting a bleeding current so as to avoid a flickering of the LED. The control circuit does not need extra pins for coupling a large capacitor, but the bleeding signal can be still acquired. Preferably, the present invention is suitable for an IC of low pin numbers.

    摘要翻译： LED驱动器的控制电路利用计数器来获取由TRIAC调光器输出的AC相切电压的周期和导通时间或非导通时间。 根据循环和导通时间或非导通时间确定出血信号，并用于调节出血电流，以避免LED的闪烁。 控制电路不需要用于耦合大电容器的额外引脚，但仍可获取出血信号。 优选地，本发明适用于低引脚数的IC。

    CONTROL CIRCUIT AND METHOD OF A POWER CONVERTER
    6.
    发明申请
    CONTROL CIRCUIT AND METHOD OF A POWER CONVERTER 审中-公开
    电源转换器的控制电路和方法

    公开(公告)号：US20170005579A1

    公开(公告)日：2017-01-05

    申请号：US15267487

    申请日：2016-09-16

    申请人： Richtek Technology Corporation

    发明人： Isaac Y. CHEN

    IPC分类号： H02M3/335 ,  H02H3/027 ,  H02H7/12

    CPC分类号： H02M3/33507 ,  H02H3/027 ,  H02H7/1213 ,  H02M3/33523 ,  H02M2001/0032 ,  H02M2001/325 ,  Y02B70/16

    摘要： A feedback signal stabilized by a capacitor and related to an output voltage of a power converter is used to acquire the output power information of the power converter, and a control circuit uses a second clock not related to the switching frequency of the power converter to count a duration time of the feedback signal being higher than a threshold. When the duration time is higher than a preset time, an abnormal output power of the power converter is distinguished and the power converter will be turned off. The feedback signal will not vary severely even if the output terminal of the power converter is interfered, and the counted duration time will not be influenced when the switching frequency is changing caused by a load changing.

    摘要翻译： 使用由电容器稳定并与功率转换器的输出电压相关的反馈信号来获取功率转换器的输出功率信息，并且控制电路使用与功率转换器的开关频率无关的第二时钟来计数 反馈信号的持续时间高于阈值。 当持续时间高于预设时间时，功率转换器的异常输出功率被区分，功率转换器将被关闭。 即使电源转换器的输出端子受到干扰，反馈信号也不会严重变化，而当负载变化导致开关频率变化时，计数持续时间不会受到影响。

    CIRCUIT AND METHOD FOR IMPROVING NOISE IMMUNITY OF A SINGLE-END LEVEL SHIFTER IN A FLOATING GATE DRIVER
    7.
    发明申请
    CIRCUIT AND METHOD FOR IMPROVING NOISE IMMUNITY OF A SINGLE-END LEVEL SHIFTER IN A FLOATING GATE DRIVER 有权
    用于改善浮动门驱动器中单端液位变送器噪声的电路和方法

    公开(公告)号：US20140253185A1

    公开(公告)日：2014-09-11

    申请号：US14285038

    申请日：2014-05-22

    申请人： Richtek Technology Corporation

    发明人： Pei-Kai TSENG ,  Chien-Fu TANG ,  Isaac Y. CHEN

    IPC分类号： H03K3/013 ,  H03L5/00

    CPC分类号： H03K3/013 ,  H03K19/00361 ,  H03K19/018507 ,  H03L5/00

    摘要： A floating gate driver uses a single-end level shifter to translate a set signal and a reset signal induced by a rising edge and a falling edge of a switch signal to a common output terminal to generate an output voltage for a bistable circuit to generate a level shifted switch signal. Under control of a well transient detect signal asserted by detecting noise in the output voltage, a masking circuit between the single-end level shifter and the bistable circuit masks noise in the output voltage. This configuration has lower area penalty and better noise immunity.

    摘要翻译： 浮动栅极驱动器使用单端电平转换器将设置信号和由开关信号的上升沿和下降沿引起的复位信号转换为公共输出端，以产生双稳态电路的输出电压，以产生 电平转换开关信号。 在通过检测输出电压中的噪声所确定的良好瞬态检测信号的控制下，单端电平转换器和双稳态电路之间的屏蔽电路屏蔽输出电压中的噪声。 该配置具有较低的面积损失和更好的抗噪声能力。

    CIRCUIT AND METHOD FOR IMPROVING NOISE IMMUNITY OF A SINGLE-END LEVEL SHIFTER IN A FLOATING GATE DRIVER
    8.
    发明申请
    CIRCUIT AND METHOD FOR IMPROVING NOISE IMMUNITY OF A SINGLE-END LEVEL SHIFTER IN A FLOATING GATE DRIVER 有权
    用于改善浮动门驱动器中单端液位变送器噪声的电路和方法

    公开(公告)号：US20130207704A1

    公开(公告)日：2013-08-15

    申请号：US13761825

    申请日：2013-02-07

    申请人： Richtek Technology Corporation

    发明人： Pei-Kai TSENG ,  Chien-Fu TANG ,  Isaac Y. CHEN

    IPC分类号： H03K3/013

    CPC分类号： H03K3/013 ,  H03K19/00361 ,  H03K19/018507 ,  H03L5/00

    摘要： A floating gate driver uses a single-end level shifter to translate a set signal and a reset signal induced by a rising edge and a falling edge of a switch signal to a common output terminal to generate an output voltage for a bistable circuit to generate a level shifted switch signal. Under control of a well transient detect signal asserted by detecting noise in the output voltage, a masking circuit between the single-end level shifter and the bistable circuit masks noise in the output voltage. This configuration has lower area penalty and better noise immunity.

    摘要翻译： 浮动栅极驱动器使用单端电平转换器将设置信号和由开关信号的上升沿和下降沿引起的复位信号转换为公共输出端，以产生双稳态电路的输出电压，以产生 电平转换开关信号。 在通过检测输出电压中的噪声所确定的良好瞬态检测信号的控制下，单端电平转换器和双稳态电路之间的屏蔽电路屏蔽输出电压中的噪声。 该配置具有较低的面积损失和更好的抗噪声能力。

    MIXED MODE COMPENSATION CIRCUIT AND METHOD FOR A POWER CONVERTER
    9.
    发明申请
    MIXED MODE COMPENSATION CIRCUIT AND METHOD FOR A POWER CONVERTER 有权
    用于电力转换器的混合模式补偿电路和方法

    公开(公告)号：US20130113450A1

    公开(公告)日：2013-05-09

    申请号：US13672125

    申请日：2012-11-08

    申请人： Richtek Technology Corporation

    发明人： Chien-Fu TANG ,  Jiun-Hung PAN ,  Isaac Y. CHEN

    IPC分类号： G05F1/10

    CPC分类号： G05F1/10 ,  H02M1/00 ,  H02M2001/0025 ,  Y02B70/126

    摘要： A mixed mode compensation circuit and method for a power converter generate a digital signal according to a reference value and a feedback signal which is related to the output voltage of the power converter, convert the digital signal into a first analog signal, offset the first analog signal with a variable offset value to generate a second analog signal, and filter out high-frequency components of the second analog signal to generate a third analog signal for stable output voltage of the power converter. The mixed mode compensation does not require large capacitors, and thus the circuit can be integrated into an integrated circuit.

    摘要翻译： 用于功率转换器的混合模式补偿电路和方法根据参考值和与功率转换器的输出电压相关的反馈信号产生数字信号，将数字信号转换成第一模拟信号，偏移第一模拟信号 具有可变偏移值的信号以产生第二模拟信号，并且滤除第二模拟信号的高频分量以产生用于功率转换器的稳定输出电压的第三模拟信号。 混合模式补偿不需要大电容，因此电路可以集成到集成电路中。

    CONTROL CIRCUIT FOR POWER CONVERTING CIRCUIT
    10.
    发明申请
    CONTROL CIRCUIT FOR POWER CONVERTING CIRCUIT 有权
    电源转换电路控制电路

    公开(公告)号：US20150162843A1

    公开(公告)日：2015-06-11

    申请号：US14560774

    申请日：2014-12-04

    申请人： Richtek Technology Corporation

    发明人： Isaac Y. CHEN ,  Chien-Fu TANG ,  Hsin-Yi WU

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33523 ,  H02M1/32 ,  H02M2001/0022

    摘要： A control circuit for a power converting circuit includes a multifunctional pin, a pulse-width-modulation (PWM) signal generating circuit, a voltage detecting circuit and a zero current detecting circuit. The voltage detecting circuit detects a signal on the multifunctional pin. When the signal on the multifunctional pin is greater than a predetermined value, the voltage detecting circuit configures the PWM signal generating circuit to intermittently conduct a current switch of the power converting circuit. The zero current detecting circuit detects the signal of the multifunctional pin to determine the conduction status of the current switch. When the signal of the multifunctional pin is less than the predetermined value, the voltage detecting circuit configures the PWM signal generating circuit to turn off the current switch.

    摘要翻译： 电力转换电路的控制电路包括多功能引脚，脉冲宽度调制（PWM）信号发生电路，电压检测电路和零电流检测电路。 电压检测电路检测多功能引脚上的信号。 当多功能引脚上的信号大于预定值时，电压检测电路将PWM信号产生电路配置为间歇地导通电力转换电路的电流开关。 零电流检测电路检测多功能引脚的信号，以确定电流开关的导通状态。 当多功能引脚的信号小于预定值时，电压检测电路配置PWM信号产生电路以关断电流开关。