公开(公告)号：US07612543B2

公开(公告)日：2009-11-03

申请号：US11670038

申请日：2007-02-01

Applicant: Chien Peng Yu ,  Yi Cheng Wang ,  Ye Hsuan Yan

Inventor： Chien Peng Yu ,  Yi Cheng Wang ,  Ye Hsuan Yan

IPC: G05F1/46

CPC classification number: H02M3/156 ,  H02M1/08

Abstract: A feedback signal sensing method includes the steps of: providing a pulse width modulation (PWM) signal having a period; charging a capacitor by a current source during a pulse duration of the period, so as to form an equivalent slope compensation ramp signal; conducting an inductor current flowing from a boost inductor to flow through an equivalent resistor during the pulse duration of the period, so as to form an equivalent inductor current signal; and using a coupling characteristic of the capacitor together with the equivalent slope compensation ramp signal and the equivalent inductor current signal to form a feedback signal.

Abstract translation: 反馈信号检测方法包括以下步骤：提供具有周期的脉宽调制（PWM）信号; 在该周期的脉冲持续时间期间由电流源对电容器充电，以形成等效的斜坡补偿斜坡信号; 在该周期的脉冲持续时间期间，引导从升压电感器流过的电感电流流过等效电阻器，以形成等效电感器电流信号; 并且使用电容器的耦合特性与等效斜坡补偿斜坡信号和等效电感器电流信号一起形成反馈信号。

公开(公告)号：US20080106216A1

公开(公告)日：2008-05-08

申请号：US11670045

申请日：2007-02-01

Applicant: Chien Peng YU ,  Yi Cheng WANG ,  Ye Hsuan YAN

Inventor： Chien Peng YU ,  Yi Cheng WANG ,  Ye Hsuan YAN

IPC: H05B41/24

CPC classification number: H05B33/0827 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/346

Abstract: A dimming method for light emitting diodes (LEDs), which is applied in a pulse width modulation boost circuit system, includes the following steps: (a) equally dividing a cycle into a plurality of intervals; (b) providing a plurality of control signals having the cycle and a pulse duration, wherein the pulse duration of each of the control signals is sequentially generated in the cycle; and (c) using the plurality of control signals to control a plurality of corresponding switches for dimming the LEDs connected to the switches.

Abstract translation: 适用于脉冲宽度调制升压电路系统的发光二极管（LED）的调光方法包括以下步骤：（a）将循环等分成多个间隔; （b）提供具有周期和脉冲持续时间的多个控制信号，其中每个控制信号的脉冲持续时间在该周期中顺序地产生; 和（c）使用多个控制信号来控制多个相应的开关，用于对连接到开关的LED进行调光。

公开(公告)号：US07893679B2

公开(公告)日：2011-02-22

申请号：US12275379

申请日：2008-11-21

Applicant: Chien Peng Yu ,  Yi Cheng Wang ,  Ye Hsuan Yan ,  Chih Chi Hsu

Inventor： Chien Peng Yu ,  Yi Cheng Wang ,  Ye Hsuan Yan ,  Chih Chi Hsu

IPC: G05F1/00

CPC classification number: H02M3/156 ,  H02M1/32

Abstract: A PWM comprises a voltage transformation module, a voltage-sensing module and a timer. The voltage transformation module is configured to transform an input voltage into an output voltage. The voltage-sensing module is coupled to the voltage transformation module and configured to detect a voltage of a first terminal, wherein the voltage of the first terminal is proportional to the output voltage. The timer is configured to measure the time duration for which the voltage of the first terminal is lower than a reference voltage, wherein the timer initiates a short circuit signal when the time duration is greater than a predetermined value.

Abstract translation: PWM包括电压变换模块，电压感测模块和定时器。 电压变换模块被配置为将输入电压变换为输出电压。 电压感测模块耦合到电压变换模块，并被配置为检测第一端子的电压，其中第一端子的电压与输出电压成比例。 定时器被配置为测量第一端子的电压低于参考电压的持续时间，其中当持续时间大于预定值时，定时器启动短路信号。

公开(公告)号：US20080074089A1

公开(公告)日：2008-03-27

申请号：US11670038

申请日：2007-02-01

Applicant: Chien Peng YU ,  Yi Cheng WANG ,  Ye Hsuan YAN

Inventor： Chien Peng YU ,  Yi Cheng WANG ,  Ye Hsuan YAN

IPC: G05F1/00

CPC classification number: H02M3/156 ,  H02M1/08

Abstract: A feedback signal sensing method includes the steps of: providing a pulse width modulation (PWM) signal having a period; charging a capacitor by a current source during a pulse duration of the period, so as to form an equivalent slope compensation ramp signal; conducting an inductor current flowing from a boost inductor to flow through an equivalent resistor during the pulse duration of the period, so as to form an equivalent inductor current signal; and using a coupling characteristic of the capacitor together with the equivalent slope compensation ramp signal and the equivalent inductor current signal to form a feedback signal.

Abstract translation: 反馈信号检测方法包括以下步骤：提供具有周期的脉宽调制（PWM）信号; 在该周期的脉冲持续时间期间由电流源对电容器充电，以形成等效的斜坡补偿斜坡信号; 在该周期的脉冲持续时间期间，引导从升压电感器流过的电感电流流过等效电阻器，以形成等效电感器电流信号; 并且使用电容器的耦合特性与等效斜坡补偿斜坡信号和等效电感器电流信号一起形成反馈信号。

公开(公告)号：US20100026266A1

公开(公告)日：2010-02-04

申请号：US12275379

申请日：2008-11-21

Applicant: CHIEN PENG YU ,  YI CHENG WANG ,  YE HSUAN YAN ,  CHIH CHI HSU

Inventor： CHIEN PENG YU ,  YI CHENG WANG ,  YE HSUAN YAN ,  CHIH CHI HSU

IPC: G05F1/569

CPC classification number: H02M3/156 ,  H02M1/32

Abstract: A PWM comprises a voltage transformation module, a voltage-sensing module and a timer. The voltage transformation module is configured to transform an input voltage into an output voltage. The voltage-sensing module is coupled to the voltage transformation module and configured to detect a voltage of a first terminal, wherein the voltage of the first terminal is proportional to the output voltage. The timer is configured to measure the time duration for which the voltage of the first terminal is lower than a reference voltage, wherein the timer initiates a short circuit signal when the time duration is greater than a predetermined value.

Abstract translation: PWM包括电压变换模块，电压感测模块和定时器。 电压变换模块被配置为将输入电压变换为输出电压。 电压感测模块耦合到电压变换模块，并被配置为检测第一端子的电压，其中第一端子的电压与输出电压成比例。 定时器被配置为测量第一端子的电压低于参考电压的持续时间，其中当持续时间大于预定值时，定时器启动短路信号。