ADAPTIVE TWO-STAGE VOLTAGE REGULATOR AND METHOD FOR TWO-STAGE VOLTAGE REGULATION
    1.
    发明申请
    ADAPTIVE TWO-STAGE VOLTAGE REGULATOR AND METHOD FOR TWO-STAGE VOLTAGE REGULATION 有权
    自适应两阶段电压调节器和两阶段电压调节方法

    公开(公告)号:US20110285366A1

    公开(公告)日:2011-11-24

    申请号:US12781995

    申请日:2010-05-18

    IPC分类号: G05F1/10

    摘要: The present invention discloses an adaptive two-stage voltage regulator and a method for controlling the same. The adaptive two-stage voltage regulator includes: a voltage regulator for converting an input voltage (Vin) to a middle voltage (Vm), wherein Vin≦Vin_max; a linear regulator for converting the middle voltage to an output voltage (Vout); and a middle voltage controller for adjusting the middle voltage according to (1) an input voltage indicator and one of (2a) an output voltage indicator and (2b) a predetermined reference signal, such that when Vin≦Vout, Vm=Vout+ΔV and (Vout+ΔV)

    摘要翻译: 本发明公开了一种自适应两级电压调节器及其控制方法。 自适应两级电压调节器包括:用于将输入电压(Vin)转换成中间电压(Vm)的电压调节器,其中Vin≦̸ Vin_max; 用于将中间电压转换成输出电压(Vout)的线性调节器; 以及中压电压控制器,用于根据(1)输入电压指示器和(2a)输出电压指示器和(2b)预定参考信号中的一个来调节中间电压,使得当Vin≦̸ Vout,Vm = Vout +&Dgr ; V和(Vout +&Dgr; V)

    Power converter with improved line transient response, control circuit for power converter, and method for improving line transient response
    2.
    发明授权
    Power converter with improved line transient response, control circuit for power converter, and method for improving line transient response 失效
    具有改进的线路瞬态响应的功率转换器,用于功率转换器的控制电路,以及用于改善线路瞬态响应的方法

    公开(公告)号:US08120348B2

    公开(公告)日:2012-02-21

    申请号:US12459506

    申请日:2009-07-02

    IPC分类号: G05F5/00

    摘要: The present invention discloses a power converter with improved line transient, comprising: a power stage circuit including at least one power transistor switch which operates to convert an input voltage to an output voltage; an error amplifier comparing a feedback signal with a reference signal to generate an error signal; an input voltage instant variation extraction circuit extracting an instant variation of the input voltage and generating a signal relating to the instant variation; and a PWM comparator generating a PWM signal according to at least a ramp signal, the error signal, and the signal relating to the instant variation, to thereby control the operation of the power transistor switch in the power stage circuit.

    摘要翻译: 本发明公开了一种具有改进的线路瞬变的功率转换器,包括:功率级电路,包括至少一个功率晶体管开关,功率晶体管开关用于将输入电压转换为输出电压; 将反馈信号与参考信号进行比较以产生误差信号的误差放大器; 输入电压瞬时变化提取电路,提取所述输入电压的瞬时变化并产生与所述瞬时变化相关的信号; 以及PWM比较器,根据至少一个斜坡信号,该误差信号和与该瞬时变化相关的信号产生PWM信号,从而控制功率级电路中的功率晶体管开关的操作。

    LED driver and driving method
    3.
    发明授权
    LED driver and driving method 有权
    LED驱动器及驱动方式

    公开(公告)号:US08847500B2

    公开(公告)日:2014-09-30

    申请号:US12955094

    申请日:2010-11-29

    IPC分类号: H05B37/02 H05B33/08

    摘要: An LED driver includes a power converter to convert an input voltage to a regulated voltage, a current source to be connected with an LED string in series between the power converter and a bias node, and a switching circuit to apply a bias voltage to the bias node to set the total voltage drop of the LED string and the current source. By controlling the total voltage drop of the LED string and the current source, the LED driver will automatically select a boost mode or a buck mode for operation, thereby improving the efficiency thereof.

    摘要翻译: LED驱动器包括将输入电压转换为调节电压的电力转换器,与功率转换器和偏置节点之间串联的LED串连接的电流源以及向偏置施加偏置电压的开关电路 节点设置LED串和电流源的总压降。 通过控制LED串和电流源的总电压降,LED驱动器将自动选择升压模式或降压模式进行操作,从而提高其效率。

    Power converter with improved line transient response, control circuit for power converter, and method for improving line transient response
    4.
    发明申请
    Power converter with improved line transient response, control circuit for power converter, and method for improving line transient response 失效
    具有改进的线路瞬态响应的功率转换器,用于功率转换器的控制电路,以及用于改善线路瞬态响应的方法

    公开(公告)号:US20100231183A1

    公开(公告)日:2010-09-16

    申请号:US12459506

    申请日:2009-07-02

    IPC分类号: G05F1/10

    摘要: The present invention discloses a power converter with improved line transient, comprising: a power stage circuit including at least one power transistor switch which operates to convert an input voltage to an output voltage; an error amplifier comparing a feedback signal with a reference signal to generate an error signal; an input voltage instant variation extraction circuit extracting an instant variation of the input voltage and generating a signal relating to the instant variation; and a PWM comparator generating a PWM signal according to at least a ramp signal, the error signal, and the signal relating to the instant variation, to thereby control the operation of the power transistor switch in the power stage circuit.

    摘要翻译: 本发明公开了一种具有改进的线路瞬变的功率转换器,包括:功率级电路,包括至少一个功率晶体管开关,功率晶体管开关用于将输入电压转换为输出电压; 将反馈信号与参考信号进行比较以产生误差信号的误差放大器; 输入电压瞬时变化提取电路,提取所述输入电压的瞬时变化并产生与所述瞬时变化相关的信号; 以及PWM比较器,根据至少一个斜坡信号,该误差信号和与该瞬时变化相关的信号产生PWM信号,从而控制功率级电路中的功率晶体管开关的操作。

    Adaptive two-stage voltage regulator and method for two-stage voltage regulation
    5.
    发明授权
    Adaptive two-stage voltage regulator and method for two-stage voltage regulation 有权
    自适应两级电压调节器和两级电压调节方法

    公开(公告)号:US08373396B2

    公开(公告)日:2013-02-12

    申请号:US12781995

    申请日:2010-05-18

    IPC分类号: G05F1/00

    摘要: The present invention discloses an adaptive two-stage voltage regulator and a method for controlling the same. The adaptive two-stage voltage regulator includes: a voltage regulator for converting an input voltage (Vin) to a middle voltage (Vm), wherein Vin≦Vin_max; a linear regulator for converting the middle voltage to an output voltage (Vout); and a middle voltage controller for adjusting the middle voltage according to (1) an input voltage indicator and one of (2a) an output voltage indicator and (2b) a predetermined reference signal, such that when Vin≦Vout, Vm=Vout+ΔV and (Vout+ΔV)

    摘要翻译: 本发明公开了一种自适应两级电压调节器及其控制方法。 自适应两级电压调节器包括:用于将输入电压(Vin)转换成中间电压(Vm)的电压调节器,其中Vin≦̸ Vin_max; 用于将中间电压转换成输出电压(Vout)的线性调节器; 以及中压电压控制器,用于根据(1)输入电压指示器和(2a)输出电压指示器和(2b)预定参考信号中的一个来调节中间电压,使得当Vin≦̸ Vout,Vm = Vout +&Dgr ; V和(Vout +&Dgr; V)

    Light emitting device driver circuit and method for driving light emitting device
    6.
    发明申请
    Light emitting device driver circuit and method for driving light emitting device 审中-公开
    发光装置驱动电路及驱动发光装置的方法

    公开(公告)号:US20100156323A1

    公开(公告)日:2010-06-24

    申请号:US12583674

    申请日:2009-08-25

    IPC分类号: H05B37/02

    CPC分类号: H05B33/0815 H05B33/0851

    摘要: The present invention discloses a light emitting device driver circuit and a method for driving a light emitting device. The circuit comprises: a power stage performing power conversion on an input voltage to supply an output current to one or more light emitting devices; and a control circuit sensing the output current of the power stage to feedback control the power stage accordingly.

    摘要翻译: 本发明公开了一种发光器件驱动电路和驱动发光器件的方法。 该电路包括:功率级,对输入电压进行功率转换,以向一个或多个发光器件提供输出电流; 以及感测功率级的输出电流的控制电路,以相应地反馈控制功率级。

    Systems and methods for generating reference voltages
    7.
    发明授权
    Systems and methods for generating reference voltages 有权
    用于产生参考电压的系统和方法

    公开(公告)号:US08149232B2

    公开(公告)日:2012-04-03

    申请号:US12687894

    申请日:2010-01-15

    IPC分类号: G06F3/038 G09G5/00

    摘要: Systems and methods for generating reference voltages are provided. A representative system comprises a resistor circuit; a first switch coupled between a first end of the resistor circuit and a first power source; a second switch coupled between the first end of the resistor circuit and a second power source; a third switch coupled to a second end of the resistor circuit; a fourth switch coupled to the second end of the resistor circuit; a first resistor coupled between the first end of the resistor circuit and the first switch; a second resistor coupled between the first end of the resistor circuit and the second switch; a third resistor coupled between the second end of the resistor circuit and the third switch; a fourth resistor coupled between the second end of the resistor circuit and the fourth switch; and a control circuit for controlling the switches.

    摘要翻译: 提供了产生参考电压的系统和方法。 代表性系统包括电阻电路; 耦合在所述电阻器电路的第一端和第一电源之间的第一开关; 耦合在所述电阻器电路的第一端和第二电源之间的第二开关; 耦合到所述电阻电路的第二端的第三开关; 耦合到所述电阻电路的第二端的第四开关; 耦合在所述电阻器电路的第一端和所述第一开关之间的第一电阻器; 耦合在所述电阻器电路的第一端和所述第二开关之间的第二电阻器; 耦合在所述电阻器电路的第二端和所述第三开关之间的第三电阻器; 耦合在所述电阻器电路的第二端和所述第四开关之间的第四电阻器; 以及用于控制开关的控制电路。

    SYSTEMS AND METHODS FOR GENERATING REFERENCE VOLTAGES
    8.
    发明申请
    SYSTEMS AND METHODS FOR GENERATING REFERENCE VOLTAGES 有权
    用于产生参考电压的系统和方法

    公开(公告)号:US20100110060A1

    公开(公告)日:2010-05-06

    申请号:US12687894

    申请日:2010-01-15

    IPC分类号: G06F3/038

    摘要: Systems and methods for generating reference voltages are provided. A representative system comprises a resistor circuit; a first switch coupled between a first end of the resistor circuit and a first power source; a second switch coupled between the first end of the resistor circuit and a second power source; a third switch coupled to a second end of the resistor circuit; a fourth switch coupled to the second end of the resistor circuit; a first resistor coupled between the first end of the resistor circuit and the first switch; a second resistor coupled between the first end of the resistor circuit and the second switch; a third resistor coupled between the second end of the resistor circuit and the third switch; a fourth resistor coupled between the second end of the resistor circuit and the fourth switch; and a control circuit for controlling the switches.

    摘要翻译: 提供了产生参考电压的系统和方法。 代表性系统包括电阻电路; 耦合在所述电阻器电路的第一端和第一电源之间的第一开关; 耦合在所述电阻器电路的第一端和第二电源之间的第二开关; 耦合到所述电阻电路的第二端的第三开关; 耦合到所述电阻电路的第二端的第四开关; 耦合在所述电阻器电路的第一端和所述第一开关之间的第一电阻器; 耦合在所述电阻器电路的第一端和所述第二开关之间的第二电阻器; 耦合在所述电阻器电路的第二端和所述第三开关之间的第三电阻器; 耦合在所述电阻器电路的第二端和所述第四开关之间的第四电阻器; 以及用于控制开关的控制电路。

    Analog buffers composed of thin film transistors
    9.
    发明申请
    Analog buffers composed of thin film transistors 有权
    由薄膜晶体管组成的模拟缓冲器

    公开(公告)号:US20060186932A1

    公开(公告)日:2006-08-24

    申请号:US11061836

    申请日:2005-02-18

    IPC分类号: H03B1/00

    摘要: Analog buffers with a precise gate to source voltage compensation and a small DC offset, by storing an input offset voltage to be used as an output offset voltage to reverse the offset in the input. A first source follower at the input end and a second source follower at the output end are both coupled to a switching circuit, wherein the first follower provides an input offset voltage (e.g., |Vgsp|) based on the input voltage (Vin), the second source follower provides an output voltage (Vout) by compensating Vin transmitted through the analog buffer circuit with an output offset voltage (|Vgsn|), and the switching circuit stores and equalizes the output offset voltage to the input offset voltage (|Vgsp|=|Vgsn|), so to obtain an output Vout that is identical to Vin.

    摘要翻译: 具有精确门到源电压补偿和小直流偏移的模拟缓冲器,通过存储要用作输出偏移电压的输入失调电压来反转输入中的偏移。 输入端的第一源极跟随器和输出端的第二源极跟随器都耦合到开关电路,其中第一跟随器基于输入电压(Vin)提供输入偏移电压(例如,| V gsp |), 第二源极跟随器通过以输出偏移电压(| Vgsn |)补偿通过模拟缓冲电路传输的Vin来提供输出电压(Vout),并且开关电路将输出偏移电压存储并均衡到输入失调电压(| Vgsp | = | Vgsn |),以获得与Vin相同的输出Vout。

    Systems and methods for generating reference voltages
    10.
    发明申请
    Systems and methods for generating reference voltages 有权
    用于产生参考电压的系统和方法

    公开(公告)号:US20070052472A1

    公开(公告)日:2007-03-08

    申请号:US11220830

    申请日:2005-09-07

    IPC分类号: G05F1/10

    摘要: Systems and methods for generating reference voltages are provided. A representative system comprises a resistor circuit; a first switch coupled between a first end of the resistor circuit and a first power source; a second switch coupled between the first end of the resistor circuit and a second power source; a third switch coupled to a second end of the resistor circuit; a fourth switch coupled to the second end of the resistor circuit; a first resistor coupled between the first end of the resistor circuit and the first switch; a second resistor coupled between the first end of the resistor circuit and the second switch; a third resistor coupled between the second end of the resistor circuit and the third switch; a fourth resistor coupled between the second end of the resistor circuit and the fourth switch; and a control circuit for controlling the switches.

    摘要翻译: 提供了产生参考电压的系统和方法。 代表性系统包括电阻电路; 耦合在所述电阻器电路的第一端和第一电源之间的第一开关; 耦合在所述电阻器电路的第一端和第二电源之间的第二开关; 耦合到所述电阻电路的第二端的第三开关; 耦合到所述电阻电路的第二端的第四开关; 耦合在所述电阻器电路的第一端和所述第一开关之间的第一电阻器; 耦合在所述电阻器电路的第一端和所述第二开关之间的第二电阻器; 耦合在所述电阻器电路的第二端和所述第三开关之间的第三电阻器; 耦合在所述电阻器电路的第二端和所述第四开关之间的第四电阻器; 以及用于控制开关的控制电路。