公开(公告)号：US07436685B2

公开(公告)日：2008-10-14

申请号：US11091501

申请日：2005-03-29

Applicant: Hong-Chun Li ,  Chean-Lung Tsay ,  Dan Chen

Inventor： Hong-Chun Li ,  Chean-Lung Tsay ,  Dan Chen

IPC: H02M3/335

CPC classification number: H02M1/4225 ,  H02M2001/0022 ,  Y02B70/126 ,  Y02P80/112

Abstract: In a power factor corrector including a PWM switch to switch a line current generated from a line voltage to charge a boost capacitor to thereby generate an output voltage, a piecewise on-time modulation apparatus and method comprise comparing a line voltage dependent voltage with an output voltage dependent voltage to generate a comparison signal to determine the on-time of the PWM switch. When the line voltage is lower than a threshold, the on-time of the PWM switch varies with the line voltage, and when the line voltage is higher than the threshold, the on-time of the PWM switch is constant.

Abstract translation: 在包括PWM开关的功率因数校正器中，切换从线电压产生的线电流以对升压电容器充电从而产生输出电压，分段导通时间调制装置和方法包括将线路电压相关电压与输出 电压相关电压产生比较信号，以确定PWM开关的导通时间。 当线路电压低于阈值时，PWM开关的导通时间随着线路电压而变化，当线路电压高于阈值时，PWM开关的导通时间是恒定的。

公开(公告)号：US07411379B2

公开(公告)日：2008-08-12

申请号：US11305237

申请日：2005-12-19

Applicant: Kwan-Jen Chu ,  Chung-Lung Pai ,  Chun-Chin Tung ,  Jing-Meng Liu

Inventor： Kwan-Jen Chu ,  Chung-Lung Pai ,  Chun-Chin Tung ,  Jing-Meng Liu

IPC: G05F1/56

CPC classification number: H02M3/156 ,  H02M1/32 ,  H02M2001/0009

Abstract: In an apparatus for over-voltage and over-current protection for a step-up current-mode converter including an inductor connected via a phase node to a switch that is switched by a control signal to convert an input voltage to an output voltage, a controller has a multiplexed pin, and a resistor and a capacitor are connected in parallel between the multiplexed pin and the phase node. In an over-voltage protection mode, the controller senses the voltage on the multiplexed pin, and in an over-current protection mode, the controller supplies a current to flow through the resistor and senses the voltage on the multiplexed pin.

Abstract translation: 在用于升压电流模式转换器的过电压和过电流保护的装置中，包括通过相位节点连接到通过控制信号切换以将输入电压转换为输出电压的开关的电感器， 控制器具有复用引脚，并且电阻器和电容器并联连接在多路复用引脚和相位节点之间。 在过电压保护模式下，控制器检测多路复用引脚上的电压，并且在过流保护模式下，控制器提供电流流过电阻并感测复用引脚上的电压。

公开(公告)号：US07388592B2

公开(公告)日：2008-06-17

申请号：US10765039

申请日：2004-01-28

Applicant: Chao-Hsuan Chuang ,  Jing-Meng Liu ,  Shin-Lung Ho ,  Wen-Hung Huang ,  Cheng-Yuan Chang

Inventor： Chao-Hsuan Chuang ,  Jing-Meng Liu ,  Shin-Lung Ho ,  Wen-Hung Huang ,  Cheng-Yuan Chang

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3611 ,  G09G2320/0276

Abstract: In a gamma voltage generator and gamma voltage generating method that can tune the gamma voltages individually, several gamma currents of a same magnitude are generated for each to flow through a variable resistive element to generate a variable common voltage and several variable voltages, from which a common gamma voltage and several first gamma voltages are generated. By use of the symmetric property of the gamma curve corresponding to those gamma voltages to be generated, several voltages are generated by mapping the first gamma voltages with the common gamma voltage as the center axis, and from which several second gamma voltages are derived. The common gamma voltage and the first and second gamma voltages are provided for those gamma voltages corresponding to the gamma curve.

Abstract translation: 在可以单独调节伽马电压的伽马电压发生器和伽马电压产生方法中，产生相同幅度的几个伽马电流，每个伽玛电流流过可变电阻元件以产生可变公共电压和若干可变电压， 产生常见的伽马电压和几个第一伽马电压。 通过使用对应于要产生的那些伽马电压的伽马曲线的对称性，通过将第一伽马电压与公共伽马电压作为中心轴进行映射，并从中导出数个第二伽马电压，产生几个电压。 对于与伽马曲线对应的那些伽马电压，提供常见的伽马电压和第一和第二伽马电压。

公开(公告)号：US07388409B2

公开(公告)日：2008-06-17

申请号：US11882639

申请日：2007-08-03

Applicant: Chung-Lung Pai

Inventor： Chung-Lung Pai

IPC: G01R19/00

CPC classification number: G11C7/067 ,  G11C7/062 ,  G11C2207/063

Abstract: An offset current independent sense circuit is switchable between a store state and a sense state. In the store state, the sense circuit stores an offset current to a capacitor, and the influence of the offset current is eliminated by a transistor to regenerate the offset current based on a signal provided by the capacitor in the sense state.

Abstract translation: 偏移电流独立检测电路可在存储状态和感测状态之间切换。 在存储状态下，感测电路将偏移电流存储到电容器，并且通过晶体管消除偏移电流的影响，以在感测状态下基于由电容器提供的信号再生偏移电流。

公开(公告)号：US07368977B2

公开(公告)日：2008-05-06

申请号：US11288242

申请日：2005-11-29

Applicant: Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

Inventor： Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

IPC: G05F1/10

CPC classification number: H05B33/0827 ,  G09G3/3406 ,  H05B33/0815 ,  Y02B20/346

Abstract: A dimming method for LED driving circuit is proposed. By temporary switching a pin that is originally used for the input/output of other electric signals to a high impedance node, the dimming control signal may be inputted to dim LEDs. The dimming method comprises the steps of: floating the pin every a period of time to pull the pin's voltage being equal to the dimming control signal; detecting the pin's voltage; and retrieving the dimming control signal in accordance with the detected pin's voltage and thereafter dimming the LEDs.

Abstract translation: 提出了一种LED驱动电路的调光方法。 通过将最初用于其他电信号的输入/输出的引脚临时切换到高阻抗节点，调光控制信号可以被输入到暗淡的LED。 该调光方法包括以下步骤：每隔一段时间浮动引脚以将引脚的电压拉至等于调光控制信号; 检测引脚的电压; 以及根据检测到的引脚的电压检索调光控制信号，然后对LED进行调光。

公开(公告)号：US07274177B2

公开(公告)日：2007-09-25

申请号：US11180662

申请日：2005-07-14

Applicant: Jian-Rong Huang ,  Liang-Pin Tai ,  Peng-Ju Lan

Inventor： Jian-Rong Huang ,  Liang-Pin Tai ,  Peng-Ju Lan

IPC: G05F1/573 ,  G05F1/569

CPC classification number: H02M1/15 ,  G05F1/575

Abstract: An overshoot suppression circuit comprises a switch for coupling to an output of a voltage regulation module and a voltage detector for detecting an output voltage at the output. When the load to the voltage regulation module changes from heavy to light to result in the output voltage higher than a threshold, the voltage detector turns on the switch to release energy from the output, and thereby the output voltage is suppressed to produce overshoot to damage the load coupled to the output.

Abstract translation: 过冲抑制电路包括用于耦合到电压调节模块的输出的开关和用于检测输出端的输出电压的电压检测器。 当电压调节模块的负载从重变为亮以导致输出电压高于阈值时，电压检测器接通开关，从输出端释放能量，从而抑制输出电压产生过冲损坏 负载耦合到输出端。

公开(公告)号：US07274174B2

公开(公告)日：2007-09-25

申请号：US11229587

申请日：2005-09-20

Applicant: Hung-I Wang ,  Jiun-Chiang Chen

Inventor： Hung-I Wang ,  Jiun-Chiang Chen

IPC: G05F1/613

CPC classification number: H02M3/156 ,  H02M2001/0009 ,  Y10S323/907

Abstract: In a voltage regulator including an inductor current flowing through a sense element with a first temperature coefficient, and a current sense circuit for generating a current sense signal related to the first temperature coefficient by sensing the inductor current from the sense element, a temperature compensation device and method determines a second temperature coefficient according to the first temperature coefficient and temperature variation, and produces a compensation signal with the second temperature coefficient to compensate variations in the current sense signal caused by the first temperature coefficient.

Abstract translation: 在包括流过具有第一温度系数的感测元件的电感器电流的电压调节器和用于通过感测来自感测元件的电感器电流来产生与第一温度系数相关的电流感测信号的电流感测电路的温度补偿装置 并根据第一温度系数和温度变化确定第二温度系数，并产生具有第二温度系数的补偿信号，以补偿由第​​一温度系数引起的电流感测信号的变化。

公开(公告)号：US07233134B2

公开(公告)日：2007-06-19

申请号：US10846569

申请日：2004-05-17

Applicant: Kent Huang ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Yu-Fan Liao

Inventor： Kent Huang ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Yu-Fan Liao

IPC: G05F1/40

CPC classification number: H02M3/158

Abstract: A DC-to-DC converter comprises a sense circuit to sense the output voltage of the converter to generate a feedback signal, a transconductive amplifier to amplify a difference between the feedback signal and a threshold signal to generate a first current and to generate a second current in response to a load transient, a charging circuit connected with the first current to generate a charging voltage, a driver to compare the charging voltage with two reference signals to generate a pair of low-side and high-side driving signals, and a fast response circuit to compare a load transient signal corresponding to the second current with a third reference signal to generate a bypass signal to drive the output stage of the converter in the load transient.

Abstract translation: DC-DC转换器包括用于感测转换器的输出电压以产生反馈信号的感测电路，用于放大反馈信号和阈值信号之间的差异的跨导放大器以产生第一电流并产生第二电流 响应于负载瞬变的电流，与第一电流连接以产生充电电压的充电电路，将充电电压与两个参考信号进行比较的驱动器，以产生一对低侧和高侧驱动信号，以及 快速响应电路，将与第二电流相对应的负载瞬态信号与第三参考信号进行比较，以产生旁路信号，以在负载瞬变中驱动转换器的输出级。

公开(公告)号：US07233133B2

公开(公告)日：2007-06-19

申请号：US11114060

申请日：2005-04-26

Applicant: Liang-Pin Tai ,  Jiun-Chiang Chen

Inventor： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC: G05F1/00

CPC classification number: H02M3/1584 ,  H02M2001/007

Abstract: A two-step DC-to-DC converter comprises a first converter stage for converting a first voltage to a second voltage, and a second converter stage for converting the second voltage to an output voltage. The first converter stage uses a MOSFET or normally-off JFET to serve as a high-side switch, and the second converter stage comprises a multi-phase modulator using a normally-on JFET to serve as a high-side switch, thereby improving the efficiency of the two-step DC-to-DC converter.

Abstract translation: 两级DC-DC转换器包括用于将第一电压转换为第二电压的第一转换器级和用于将第二电压转换为输出电压的第二转换级。 第一转换器级使用MOSFET或常关JFET作为高侧开关，第二转换器级包括使用常导JFET作为高侧开关的多相调制器，从而改善 两级DC-DC转换器的效率。

公开(公告)号：US07233131B2

公开(公告)日：2007-06-19

申请号：US11171437

申请日：2005-07-01

Applicant: Pao-Chuan Lin ,  Chin-Hui Wang ,  Liang-Pin Tai

Inventor： Pao-Chuan Lin ,  Chin-Hui Wang ,  Liang-Pin Tai

IPC: G05F1/44

CPC classification number: H02M1/32 ,  H02M3/156

Abstract: For a PWM controller chip in a voltage converter to switch a pair of high side and low side switches connected with a phase node therebetween, a circuit comprises a sense resistor connected between a multi-function pin on the PWM controller chip and the phase node, and an enable arrangement, a power sensing arrangement, and an over-current protection arrangement to detect the voltage on the multi-function pin for accomplishing enable function, power sensing, and over-current protection, respectively.

Abstract translation: 对于电压转换器中的PWM控制器芯片来切换与其间的相位节点连接的一对高侧和低侧开关，电路包括连接在PWM控制器芯片上的多功能引脚和相位节点之间的检测电阻器， 以及分别用于检测多功能引脚上的电压以实现使能功能，功率检测和过电流保护的使能布置，功率感测装置和过电流保护装置。