公开(公告)号：US08446135B2

公开(公告)日：2013-05-21

申请号：US13404520

申请日：2012-02-24

Applicant: An-Tung Chen ,  Chih-Hao Yang

Inventor： An-Tung Chen ,  Chih-Hao Yang

IPC: G05F1/56

CPC classification number: H02M3/156 ,  H02M2001/0025

Abstract: A control circuit and method for a ripple regulator system generate a ripple signal in-phase and synchronous with an inductor current of the ripple regulator system, and extract a ripple information proportional to the amplitude of the ripple signal. The ripple signal is used for triggering control in PWM signal generation to make the ripple regulator system have small ripples and better loop stability simultaneously. The ripple information is used to improve the output offset of the ripple regulator system that is caused by the ripple signal.

Abstract translation: 用于纹波调节器系统的控制电路和方法与纹波调节器系统的电感电流同相产生纹波信号，并提取与纹波信号幅度成比例的纹波信息。 纹波信号用于触发PWM信号生成中的控制，使波纹调节器系统同时具有小波纹和更好的环路稳定性。 纹波信息用于改善由纹波信号引起的纹波调节器系统的输出偏移。

公开(公告)号：US08436594B2

公开(公告)日：2013-05-07

申请号：US12654318

申请日：2009-12-17

Applicant: Yi-Chiang Fu ,  Wei-Hsu Chang

Inventor： Yi-Chiang Fu ,  Wei-Hsu Chang

IPC: G05F1/59

CPC classification number: H02M1/38

Abstract: In addition to an output voltage control loop, a dead-time optimization loop is provided for a digital synchronous switching converter to dynamically adjust the dead-time for the power switches of the converter. It is extracted a minimal feedback signal at a steady state while the output voltage remains under a specification, and a maximal efficiency of the digital synchronous switching converter is thus obtained.

Abstract translation: 除了输出电压控制回路之外，为数字同步开关转换器提供死区时间优化环路，以动态调整转换器电源开关的死区时间。 在稳定状态下提取最小反馈信号，同时输出电压保持在规定之下，从而获得数字同步开关转换器的最大效率。

公开(公告)号：US20130107591A1

公开(公告)日：2013-05-02

申请号：US13659431

申请日：2012-10-24

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Roland Van ROY ,  Leng-Nien HSIU ,  Pei-Yuan CHEN

IPC: H02M7/04

CPC classification number: H02M1/4258 ,  H02M2001/0025 ,  Y02B70/126

Abstract: A power-factor-improving circuit and method for an offline converter block the DC component and obtain the AC component of an input voltage of the offline converter. The AC component is superpositioned onto a DC bias signal to generate a dimming signal for the offline converter to adjust an output current of the offline converter. The offline converter has a high power factor due to the dimming signal with the AC component of the input voltage. In addition, the average of the dimming signal is determined by the DC bias signal, hence the output current can be precisely controlled according to the DC bias signal.

Abstract translation: 用于离线转换器的功率因数改善电路和方法阻断DC分量并获得离线转换器的输入电压的AC分量。 AC分量叠加到DC偏置信号上，以产生离线转换器的调光信号，以调整离线转换器的输出电流。 离线转换器由于具有输入电压的AC分量的调光信号而具有高功率因数。 此外，调光信号的平均值由直流偏置信号确定，因此可以根据直流偏置信号精确控制输出电流。

公开(公告)号：US08400086B2

公开(公告)日：2013-03-19

申请号：US12689411

申请日：2010-01-19

Applicant: Kuang-Yao Cheng

Inventor： Kuang-Yao Cheng

IPC: H02P21/00

CPC classification number: H02P6/20 ,  H02P6/18

Abstract: An apparatus and method for use with a PMSM detect the fall time or the rise time and the fall time of a motor current in the PMSM under different voltage vectors when the PMSM is in start-up to determine an initial rotor position for the PMSM at standstill.

Abstract translation: 与PMSM一起使用的装置和方法在PMSM启动时检测在不同电压矢量下的PMSM中的电动机电流的下降时间或上升时间和下降时间，以确定PMSM的初始转子位置 停顿。

公开(公告)号：US08379414B2

公开(公告)日：2013-02-19

申请号：US12701477

申请日：2010-02-05

Applicant: Chih-Feng Huang ,  Kuang-Ming Chang

Inventor： Chih-Feng Huang ,  Kuang-Ming Chang

IPC: H02M3/335

CPC classification number: H01L29/7803 ,  H01L27/088 ,  H02M1/36

Abstract: A power transistor chip with built-in enhancement mode metal oxide semiconductor field effect transistor and application circuit thereof provides an enhancement mode metal oxide semiconductor field effect transistor in association with two series connected resistors to act as a start-up circuit for the AC/DC voltage converter. The start-up circuit can be shut off after the pulse width modulation circuit of the AC/DC voltage converter circuit works normally and still capable of offering a function of brown out detection for the pulse width modulation circuit as well. Besides, the enhancement mode metal oxide semiconductor field effect transistor is built in the power transistor chip without additional masks and processes during the power transistor chip being fabricated such that the entire manufacturing process is simplified substantively with the economical production cost.

Abstract translation: 具有内置增强型金属氧化物半导体场效应晶体管的功率晶体管芯片及其应用电路提供与两个串联连接的电阻器相关联的增强型金属氧化物半导体场效应晶体管，用作AC / DC的启动电路 电压转换器 在AC / DC电压转换器电路的脉冲宽度调制电路正常工作之后，也可以切断启动电路，并且还能够为脉冲宽度调制电路提供欠压检测功能。 此外，在制造功率晶体管芯片期间，增强型金属氧化物半导体场效应晶体管内置在功率晶体管芯片中，而无需额外的掩模和工艺，使得整个制造工艺以经济的生产成本实质上简化。

公开(公告)号：US08378640B2

公开(公告)日：2013-02-19

申请号：US12631988

申请日：2009-12-07

Applicant: Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Hsuan-Kai Wang

Inventor： Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Hsuan-Kai Wang

IPC: H02J7/00 ,  H02J7/04 ,  H02J7/24

CPC classification number: H02J7/0073

Abstract: A charging circuit with an application system thereof provides an error amplifier to control a transistor switch for controlling the charging power source to charges the battery. When the voltage difference between the power source and load terminals of the transistor switch drops along with the transistor switch being turned on, the output voltage of the error amplifier changes as well to increase the turning-on resistance of the transistor switch such that the voltage difference between the power source and load terminals is capable of maintaining at a value above a certain reference level for avoiding the unstable state resulting from the charging circuit being turned on and off frequently.

Abstract translation: 具有其应用系统的充电电路提供误差放大器来控制用于控制充电电源以对电池充电的晶体管开关。 当晶体管开关的电源和负载端子之间的电压差随着晶体管开关导通而下降时，误差放大器的输出电压也改变，以增加晶体管开关的导通电阻，使得电压 电源和负载端子之间的差异能够保持在高于特定参考电平的值，以避免由充电电路频繁接通和断开引起的不稳定状态。

公开(公告)号：US20130002196A1

公开(公告)日：2013-01-03

申请号：US13610043

申请日：2012-09-11

Applicant: LI-WEI LEE ,  NIEN-HUI KUNG ,  KWAN-JEN CHU ,  YING-HSIN HSING

Inventor： LI-WEI LEE ,  NIEN-HUI KUNG ,  KWAN-JEN CHU ,  YING-HSIN HSING

IPC: H02J7/00

CPC classification number: H02J7/0077 ,  H02J2007/0062 ,  Y10T307/50

Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.

公开(公告)号：US08295022B2

公开(公告)日：2012-10-23

申请号：US12815677

申请日：2010-06-15

Applicant: Chien-Fu Tang ,  Isaac Y Chen ,  Chi-Hua Lin

Inventor： Chien-Fu Tang ,  Isaac Y Chen ,  Chi-Hua Lin

IPC: H02H3/08

CPC classification number: H03K17/0822

Abstract: An overstress protection apparatus includes a switch detector. The switch is arranged in a grounding path of a load system. The detector detects the current, voltage or temperature of the load system to determine a signal for controlling the switch, to thereby protect the load system working in normal conditions.

Abstract translation: 过应力保护装置包括开关检测器。 开关布置在负载系统的接地路径中。 检测器检测负载系统的电流，电压或温度，以确定用于控制开关的信号，从而保护在正常状态下工作的负载系统。

公开(公告)号：US08253507B2

公开(公告)日：2012-08-28

申请号：US12942218

申请日：2010-11-09

Applicant: Chien-Fu Tang ,  Isaac Y Chen

Inventor： Chien-Fu Tang ,  Isaac Y Chen

IPC: H03K7/08

CPC classification number: H03K7/08 ,  H02M3/1588 ,  H02M2001/0003 ,  H03F3/217 ,  Y02B70/1466

Abstract: A fixed-frequency control circuit and method detect the difference between the frequency of a pulse width modulation signal and a target frequency to adjust a current used to determine the on-time or off-time of the pulse width modulation signal, such that the frequency of the pulse width modulation signal is stable at the target frequency.

Abstract translation: 固定频率控制电路和方法检测脉冲宽度调制信号的频率与目标频率之间的差异，以调整用于确定脉宽调制信号的导通时间或关闭时间的电流，使得频率 的脉宽调制信号在目标频率下是稳定的。

公开(公告)号：US08248139B2

公开(公告)日：2012-08-21

申请号：US12977662

申请日：2010-12-23

Applicant: Isaac Y. Chen ,  An-Tung Chen

Inventor： Isaac Y. Chen ,  An-Tung Chen

IPC: G06F1/04

CPC classification number: G06F1/04

Abstract: An apparatus for interleaved phase shift clock synchronization includes a master clock generator and at least one slave clock generator. The master clock generator provides a ramp signal or reset signal for each slave clock generator to generate a clock synchronized with the clock of the master clock generator, and the master and slave clock generators have different reference voltages for generating clocks. Therefore, the clocks generated will be synchronized and interleaved phase with each other.

Abstract translation: 用于交错相移时钟同步的装置包括主时钟发生器和至少一个从时钟发生器。 主时钟发生器为每个从时钟发生器提供斜坡信号或复位信号，以产生与主时钟发生器的时钟同步的时钟，并且主时钟和从时钟发生器具有不同的参考电压用于产生时钟。 因此，产生的时钟将彼此同步并交错相位。