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73 条记录 (耗时 0.023 秒)

    Adaptive leading-edge blanking circuit and method for switching mode power converter
    1.
    发明申请
    Adaptive leading-edge blanking circuit and method for switching mode power converter 有权
    自适应前沿消隐电路和开关模式功率转换器的方法

    公开(公告)号：US20080211471A1

    公开(公告)日：2008-09-04

    申请号：US12071727

    申请日：2008-02-26

    申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

    发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

    IPC分类号： G05F1/00

    CPC分类号： H02M3/156 ,  H02M2001/0009

    摘要： In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse skipping mode, which employs a current trimming circuit in an oscillator for a PWM controller in the converter to reduce a charging current in the oscillator if the output voltage of the converter is excessively high, to thereby reduce the oscillator frequency and in turn lower the switching frequency of a high-side power switch of the converter.

    摘要翻译： 在用于开关模式功率转换器的自适应前沿消隐电路和方法中，感测转换器的电感器电流并将其与阈值进行比较以决定前沿消隐时间的终点。 进一步提供电路和方法，用于防止转换器进入脉冲跳跃模式，其在转换器中的PWM控制器的振荡器中采用电流微调电路，以在转换器的输出电压过高时降低振荡器中的充电电流 ，从而降低振荡器频率，从而降低转换器的高侧功率开关的开关频率。

    Adaptive leading-edge blanking circuit and method for switching mode power converter
    2.
    发明授权
    Adaptive leading-edge blanking circuit and method for switching mode power converter 有权
    自适应前沿消隐电路和开关模式功率转换器的方法

    公开(公告)号：US07839667B2

    公开(公告)日：2010-11-23

    申请号：US12071727

    申请日：2008-02-26

    申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

    发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

    IPC分类号： H02M3/24

    CPC分类号： H02M3/156 ,  H02M2001/0009

    摘要： In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse skipping mode, which employs a current trimming circuit in an oscillator for a PWM controller in the converter to reduce a charging current in the oscillator if the output voltage of the converter is excessively high, to thereby reduce the oscillator frequency and in turn lower the switching frequency of a high-side power switch of the converter.

    摘要翻译： 在用于开关模式功率转换器的自适应前沿消隐电路和方法中，感测转换器的电感器电流并将其与阈值进行比较以决定前沿消隐时间的终点。 进一步提供电路和方法，用于防止转换器进入脉冲跳跃模式，其在转换器中的PWM控制器的振荡器中采用电流微调电路，以在转换器的输出电压过高时降低振荡器中的充电电流 ，从而降低振荡器频率，从而降低转换器的高侧功率开关的开关频率。

    POWER SUPPLY CIRCUIT WITH PFC FUNCTION, AND AUTOMATIC GAIN CONTROL CIRCUIT THEREFOR AND CONTROL METHOD THEREOF
    4.
    发明申请
    POWER SUPPLY CIRCUIT WITH PFC FUNCTION, AND AUTOMATIC GAIN CONTROL CIRCUIT THEREFOR AND CONTROL METHOD THEREOF 有权
    具有PFC功能的电源电路及其自动增益控制电路及其控制方法

    公开(公告)号：US20130250631A1

    公开(公告)日：2013-09-26

    申请号：US13846568

    申请日：2013-03-18

    申请人： Chia-Wei Liao ,  Jing-Meng Liu

    发明人： Chia-Wei Liao ,  Jing-Meng Liu

    IPC分类号： H02M1/12

    CPC分类号： H02M1/42 ,  G05F3/262 ,  H02M1/08 ,  H02M1/126 ,  H02M1/4208 ,  H02M2001/0009 ,  Y02B70/126

    摘要： The present invention discloses a power supply circuit with power factor correction (PFC) function, and an automatic gain control circuit therefor and a control method thereof. The power supply circuit includes the automatic gain control circuit and a load driver circuit. The automatic gain control circuit converts an input voltage to a regulation voltage, and the load driver circuit generates an output current according to the regulation voltage. The automatic gain control circuit automatically adjust the regulation voltage such that the regulation voltage has a substantially fixed amplitude or fixed average value under different input voltages of different specifications, and the output current provided by the load driver circuit varies in phase with the input voltage to provide a PFC function.

    摘要翻译： 本发明公开了一种具有功率因数校正（PFC）功能的电源电路及其自动增益控制电路及其控制方法。 电源电路包括自动增益控制电路和负载驱动电路。 自动增益控制电路将输入电压转换为调节电压，负载驱动电路根据调节电压产生输出电流。 自动增益控制电路自动调节调节电压，使得调节电压在不同规格的不同输入电压下具有基本上固定的幅度或固定平均值，负载驱动电路提供的输出电流与输入电压相同 提供PFC功能。

    Synchronous driver circuit and integrated circuit for use therein
    5.
    发明申请
    Synchronous driver circuit and integrated circuit for use therein 有权
    同步驱动电路及集成电路

    公开(公告)号：US20110012570A1

    公开(公告)日：2011-01-20

    申请号：US12658560

    申请日：2010-02-05

    申请人： Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

    发明人： Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

    IPC分类号： G05F1/613

    CPC分类号： H05B33/0818 ,  H02M3/1582

    摘要： The present invention discloses a synchronous driver circuit, comprising: an inductor having one end coupled to an input voltage; a first power transistor having one end coupled to the other end of the inductor and another end supplying an output voltage; a second power transistor having one end coupled to the other end of the inductor and another end coupled to ground; a control circuit for controlling the operation of the first and second power transistors; a gate driver coupled to the control circuit and having an output controlling the gate of the first power transistor; and a bootstrap capacitor having one end coupled to a voltage node and the other end coupled to the other end of the inductor, the voltage across the bootstrap capacitor being provided as the operational voltage of the gate driver.

    摘要翻译： 本发明公开了一种同步驱动器电路，包括：电感器，其一端耦合到输入电压; 第一功率晶体管，其一端耦合到电感器的另一端，另一端提供输出电压; 第二功率晶体管，其一端耦合到电感器的另一端，另一端耦合到地; 用于控制第一和第二功率晶体管的操作的控制电路; 耦合到控制电路并具有控制第一功率晶体管的栅极的输出的栅极驱动器; 以及自耦电容器，其一端耦合到电压节点，另一端耦合到电感器的另一端，所述自举电容器两端的电压被提供为栅极驱动器的工作电压。

    Active Bleeder Circuit Triggering TRIAC in All Phase and Light Emitting Device Power Supply Circuit and TRIAC Control Method Using the Active Bleeder Circuit
    6.
    发明申请
    Active Bleeder Circuit Triggering TRIAC in All Phase and Light Emitting Device Power Supply Circuit and TRIAC Control Method Using the Active Bleeder Circuit 有权
    有源漏电电路触发TRIAC在所有相和发光装置电源电路和TRIAC控制方法使用主动式出血电路

    公开(公告)号：US20130169177A1

    公开(公告)日：2013-07-04

    申请号：US13728541

    申请日：2012-12-27

    申请人： Chia-Wei Liao ,  Leng-Nien Hsin ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

    发明人： Chia-Wei Liao ,  Leng-Nien Hsin ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

    IPC分类号： G05F1/455 ,  G05F3/02 ,  H05B37/02

    CPC分类号： G05F1/455 ,  G05F1/10 ,  G05F3/02 ,  H05B33/0815 ,  H05B37/02 ,  Y02B20/346

    摘要： The present invention discloses an active bleeder circuit capable of triggering a tri-electrode AC switch (TRIAC) circuit in all phase. The active bleeder circuit receives a rectified signal having an OFF phase and an ON phase. The active bleeder includes: a detection circuit for generating a detection signal according to the rectified signal and accumulating the detection signal in the OFF phase of the rectified signal; and a current sinker circuit coupled to the detection circuit, for generates a latching current to trigger the TRIAC circuit by operating a switch when the detection signal exceeds a predetermined level. The present invention also discloses a light emitting device power supply circuit and a TRIAC control method using the active bleeder circuit.

    摘要翻译： 本发明公开了一种能够全相触发三电极交流开关（TRIAC）电路的有源放电电路。 有源泄放电路接收具有OFF相位和ON相位的整流信号。 有源放电器包括：检测电路，用于根据整流信号产生检测信号，并将检测信号累积在整流信号的OFF相位; 以及耦合到检测电路的电流沉降电路，用于当检测信号超过预定电平时，通过操作开关产生触发TRIAC电路的锁存电流。 本发明还公开了一种使用有源泄放电路的发光器件电源电路和TRIAC控制方法。

    Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof
    9.
    发明授权
    Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof 有权
    发光装置电源电路及发光装置驱动电路及其控制方法

    公开(公告)号：US08710755B2

    公开(公告)日：2014-04-29

    申请号：US13421733

    申请日：2012-03-15

    申请人： Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

    发明人： Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0815

    摘要： The present invention discloses a light emitting device power supply circuit, a light emitting device driver circuit and a control method thereof. The light emitting device driver circuit is coupled to a tri-electrode AC switch (TRIAC) dimmer circuit, and it controls the brightness of a light emitting device circuit according a rectified dimming signal. The light emitting device driver circuit includes a power stage circuit and a light emitting device control circuit. The light emitting device control circuit generates a switch control signal. The power stage circuit operates at least one power switch thereof according to the switch control signal to generate a latching current for firing the TRIAC dimmer circuit, and the latching current is inputted to the light emitting device circuit.

    摘要翻译： 本发明公开了一种发光装置电源电路，发光装置驱动电路及其控制方法。 发光器件驱动电路耦合到三极交流开关（TRIAC）调光电路，并根据整流调光信号控制发光器件电路的亮度。 发光器件驱动电路包括功率级电路和发光器件控制电路。 发光装置控制电路产生开关控制信号。 功率级电路根据开关控制信号操作其至少一个电源开关，以产生用于触发TRIAC调光电路的锁存电流，并且将锁存电流输入到发光器件电路。

    Switching Regulator and Control Circuit and Control Method Thereof
    10.
    发明申请
    Switching Regulator and Control Circuit and Control Method Thereof 有权
    开关稳压器及其控制电路及其控制方法

    公开(公告)号：US20130114308A1

    公开(公告)日：2013-05-09

    申请号：US13674824

    申请日：2012-11-12

    申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu ,  Pei-Yuan Chen

    发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu ,  Pei-Yuan Chen

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33507 ,  H02M1/4258 ,  Y02B70/126

    摘要： The present invention discloses a switching regulator and a control circuit and a control method thereof. The control circuit of the switching regulator, which controls rectified power within a predetermined range, detects an input voltage and an input current to generate a voltage detection signal and a current detection signal respectively, and the voltage detection signal and the current detection signal are multiplied by one the other to generate a power index. The control circuit generates an error signal according to the power index and a reference signal. A low-pass-filter filters a high frequency band in the process. A control signal generation circuit of the control circuit generates a control signal according to the error signal. And a driver circuit of the control circuit generates an operation signal according to the control signal, for switching a power switch to convert the rectified power to an output voltage.

    摘要翻译： 本发明公开了一种开关调节器及其控制电路及其控制方法。 开关调节器的控制电路，其控制在预定范围内的整流功率，检测输入电压和输入电流，分别产生电压检测信号和电流检测信号，并将电压检测信号和电流检测信号相乘 通过另一个来产生权力指数。 控制电路根据功率指标和参考信号产生误差信号。 低通滤波器过滤高频带。 控制电路的控制信号生成电路根据误差信号生成控制信号。 并且控制电路的驱动电路根据控制信号生成操作信号，用于切换电源开关以将整流功率转换为输出电压。