公开(公告)号：US08692533B2

公开(公告)日：2014-04-08

申请号：US13591418

申请日：2012-08-22

申请人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

发明人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

IPC分类号： G05F1/00

CPC分类号： H02M3/1582

摘要： A buck-boost power converter switches the switches thereof with a novel sequence and extends the switching periods of the switches to reduce the switching loss and conduction loss when the input voltage thereof approaches the output voltage thereof. The influence of the load current of the power converter on the duty thereof is taken into account to switch the power converter between modes at correct time points, so as to prevent the output voltage from being affected by the mode switching.

摘要翻译： 降压 - 升压功率转换器以新颖的顺序切换其开关，并延长开关的开关周期，以在其输入电压接近其输出电压时降低开关损耗和导通损耗。 考虑到功率转换器的负载电流对其占空比的影响，以在正确的时间点在模式之间切换功率转换器，以防止输出电压受模式切换的影响。

公开(公告)号：US08860384B2

公开(公告)日：2014-10-14

申请号：US13591421

申请日：2012-08-22

申请人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

发明人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

IPC分类号： G02F1/00 ,  H02M3/158

CPC分类号： H02M3/1582

摘要： A buck-boost power converter switches the switches thereof with a novel sequence and extends the switching periods of the switches to reduce the switching loss and conduction loss when the input voltage thereof approaches the output voltage thereof. The influence of the load current of the power converter on the duty thereof is taken into account to switch the power converter between modes at correct time points, so as to prevent the output voltage from being affected by the mode switching.

摘要翻译： 降压 - 升压功率转换器以新颖的顺序切换其开关，并延长开关的开关周期，以在其输入电压接近其输出电压时降低开关损耗和导通损耗。 考虑到功率转换器的负载电流对其占空比的影响，以在正确的时间点在模式之间切换功率转换器，以防止输出电压受模式切换的影响。

公开(公告)号：US08593122B2

公开(公告)日：2013-11-26

申请号：US12720034

申请日：2010-03-09

申请人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

发明人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

IPC分类号： G05F1/00

CPC分类号： H02M3/1582

摘要： A buck-boost power converter switches the switches thereof with a novel sequence and extends the switching periods of the switches to reduce the switching loss and conduction loss when the input voltage thereof approaches the output voltage thereof. The influence of the load current of the power converter on the duty thereof is taken into account to switch the power converter between modes at correct time points, so as to prevent the output voltage from being affected by the mode switching.

摘要翻译： 降压 - 升压功率转换器以新颖的顺序切换其开关，并延长开关的开关周期，以在其输入电压接近其输出电压时降低开关损耗和导通损耗。 考虑到功率转换器的负载电流对其占空比的影响，以在正确的时间点在模式之间切换功率转换器，以防止输出电压受模式切换的影响。

公开(公告)号：US08610419B2

公开(公告)日：2013-12-17

申请号：US13591706

申请日：2012-08-22

申请人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

发明人： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

IPC分类号： G05F1/00

CPC分类号： H02M3/1582

摘要： A buck-boost power converter switches the switches thereof with a novel sequence and extends the switching periods of the switches to reduce the switching loss and conduction loss when the input voltage thereof approaches the output voltage thereof. The influence of the load current of the power converter on the duty thereof is taken into account to switch the power converter between modes at correct time points, so as to prevent the output voltage from being affected by the mode switching.

摘要翻译： 降压 - 升压功率转换器以新颖的顺序切换其开关，并延长开关的开关周期，以在其输入电压接近其输出电压时降低开关损耗和导通损耗。 考虑到功率转换器的负载电流对其占空比的影响，以在正确的时间点在模式之间切换功率转换器，以防止输出电压受模式切换的影响。

公开(公告)号：US20090218885A1

公开(公告)日：2009-09-03

申请号：US12071956

申请日：2008-02-28

申请人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Chun-Yu Hsieh

发明人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Chun-Yu Hsieh

IPC分类号： H02J3/46 ,  G05F1/63

CPC分类号： H02M3/1584 ,  Y10T307/352 ,  Y10T307/549 ,  Y10T307/555

摘要： The present invention discloses a slope control device capable of predicting uniform-current-sharing level and method thereof which can be applied in a redundancy or distributed power system for providing better uniform-current-sharing ability. The device comprises a high linearity transconductor circuit, a slope adjusting circuit and an incremental output voltage circuit. The invention applies either a transductor parameter or a feedback resistor to increase the droop gain and therefore the current deviation between two power supply modules is reduced. The invention further raises the output voltage step by step to ensure that the output voltage meet the requirement of allowable minimum output voltage according to increment of load current.

摘要翻译： 本发明公开了一种能够预测均匀电流共享水平的斜率控制装置及其方法，其可以应用于冗余或分布式电力系统中，以提供更好的均匀电流共享能力。 该器件包括高线性跨导电路，斜率调整电路和增量输出电压电路。 本发明应用转换器参数或反馈电阻来增加下垂增益，因此减小了两个电源模块之间的电流偏差。 本发明进一步提高输出电压，以确保输出电压满足容许最小输出电压的要求，根据负载电流的增加。

公开(公告)号：US07843177B2

公开(公告)日：2010-11-30

申请号：US11930177

申请日：2007-10-31

申请人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Tzong-Honge Shieh

发明人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Tzong-Honge Shieh

IPC分类号： G05F1/652

CPC分类号： H02M3/1582

摘要： A high efficiency control circuit for operating a switching regulator is provided. The switching regulator can regulate an output voltage no matter the input voltage is higher, lower, or close to the output voltage. The switching regulator has first, second, third and fourth switches. The control circuit can operate the switching regulator in buck mode, boost mode, or buck-boost mode. In a buck-boost mode, the control logic drives the four switches in an efficiency sequence for reducing energy consumption during the switch transition, on the other side, resistive loss owing to the energy transfer phase is also minimized. Furthermore, the invention is capable of control duty cycle limitation to fit the consideration of the linearity of the converter.

摘要翻译： 提供了一种用于操作开关调节器的高效率控制电路。 开关稳压器可以调节输出电压，无论输入电压是高，低还是接近输出电压。 开关调节器具有第一，第二，第三和第四开关。 控制电路可以在降压模式，升压模式或降压 - 升压模式下操作开关稳压器。 在降压 - 升压模式下，控制逻辑以效率序列驱动四个开关，以减少开关转换期间的能量消耗，另一方面，由于能量转移相位的电阻损耗也被最小化。 此外，本发明能够控制占空比限制以适应转换器线性度的考虑。

公开(公告)号：US07795754B2

公开(公告)日：2010-09-14

申请号：US12071956

申请日：2008-02-28

申请人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Chun-Yu Hsieh

发明人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Chun-Yu Hsieh

IPC分类号： H02J3/46

CPC分类号： H02M3/1584 ,  Y10T307/352 ,  Y10T307/549 ,  Y10T307/555

摘要： The present invention discloses a slope control device capable of predicting uniform-current-sharing level and method thereof which can be applied in a redundancy or distributed power system for providing better uniform-current-sharing ability. The device comprises a high linearity transconductor circuit, a slope adjusting circuit and an incremental output voltage circuit. The invention applies either a transconductor parameter or a feedback resistor to increase the droop gain and therefore the current deviation between two power supply modules is reduced. The invention further raises the output voltage step by step to ensure that the output voltage meet the requirement of allowable minimum output voltage according to increment of load current.

摘要翻译： 本发明公开了一种能够预测均匀电流共享水平的斜率控制装置及其方法，其可以应用于冗余或分布式电力系统中，以提供更好的均匀电流共享能力。 该器件包括高线性跨导电路，斜率调整电路和增量输出电压电路。 本发明应用跨导参数或反馈电阻来增加下垂增益，因此减小了两个电源模块之间的电流偏差。 本发明进一步提高输出电压，以确保输出电压满足容许最小输出电压的要求，根据负载电流的增加。

公开(公告)号：US08664982B2

公开(公告)日：2014-03-04

申请号：US12720022

申请日：2010-03-09

申请人： Ke-Horng Chen ,  Pin-Chin Huang ,  Hsin-Hsin Ho

发明人： Ke-Horng Chen ,  Pin-Chin Huang ,  Hsin-Hsin Ho

IPC分类号： H03K4/06

CPC分类号： H03K4/50 ,  H02M3/1582

摘要： A buck-boost power converter includes a power stage to convert an input voltage to an output voltage, an error amplifier to generate an error signal according to a reference voltage and a feedback signal proportional to the output voltage, a ramp generator to provide two ramp signals, and two comparators to generate two control signals according to the error signal and the two ramp signals to drive the power stage. By using feed-forward technique, one of the two ramp signals has a peak varying with the input voltage and the other ramp signal has a valley varying with the input voltage, so that the power converter has fast line response.

摘要翻译： 降压 - 升压功率转换器包括将输入电压转换为输出电压的功率级，误差放大器，以根据参考电压和与输出电压成正比的反馈信号产生误差信号;斜坡发生器，提供两个斜坡 信号和两个比较器根据误差信号和两个斜坡信号产生两个控制信号来驱动功率级。 通过使用前馈技术，两个斜坡信号之一具有随着输入电压而变化的峰值，另一个斜坡信号具有随输入电压变化的谷值，使得功率转换器具有快速的线路响应。

公开(公告)号：US20090108823A1

公开(公告)日：2009-04-30

申请号：US11930177

申请日：2007-10-31

申请人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Tzong-Honge Shieh

发明人： Hsin-Hsin Ho ,  Ke-Horng Chen ,  Tzong-Honge Shieh

IPC分类号： G05F1/10

CPC分类号： H02M3/1582

摘要： A high efficiency control circuit for operating a switching regulator is provided. The switching regulator can regulate an output voltage no matter the input voltage is higher, lower, or close to the output voltage. The switching regulator has first, second, third and fourth switches. The control circuit can operate the switching regulator in buck mode, boost mode, or buck-boost mode. In a buck-boost mode, the control logic drives the four switches in an efficiency sequence for reducing energy consumption during the switch transition, on the other side, resistive loss owing to the energy transfer phase is also minimized. Furthermore, the invention is capable of control duty cycle limitation to fit the consideration of the linearity of the converter.

摘要翻译： 提供了一种用于操作开关调节器的高效率控制电路。 开关稳压器可以调节输出电压，无论输入电压是高，低还是接近输出电压。 开关调节器具有第一，第二，第三和第四开关。 控制电路可以在降压模式，升压模式或降压 - 升压模式下操作开关稳压器。 在降压 - 升压模式下，控制逻辑以效率序列驱动四个开关，以减少开关转换期间的能量消耗，另一方面，由于能量转移相位的电阻损耗也被最小化。 此外，本发明能够控制占空比限制以适应转换器线性度的考虑。

公开(公告)号：US08368627B2

公开(公告)日：2013-02-05

申请号：US12391804

申请日：2009-02-24

申请人： Chun-Ho Chen ,  Yi-Pai Huang ,  Ke-Horng Chen ,  Fang-Cheng Lin ,  Han-Ping Shieh ,  Chi-Chung Tsai

发明人： Chun-Ho Chen ,  Yi-Pai Huang ,  Ke-Horng Chen ,  Fang-Cheng Lin ,  Han-Ping Shieh ,  Chi-Chung Tsai

IPC分类号： G09G3/36

CPC分类号： G09G3/3611 ,  G09G3/2003 ,  G09G3/2022 ,  G09G2310/0235 ,  G09G2320/0242

摘要： An adaptive feedback control method of a field sequential color display includes: a rearrangement step of converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field; a sampling step of performing a pixel sampling on a resolution of the input image in a sampling interval; a feedback control step of performing a pixel by pixel sum operation for each separated color on a color break-up value and a color value of the input image in a Lu′v′ color space to obtain a color difference sum, and performing a feedback control at a bit precision on the color difference sum; and a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight grayscale value of the input image according to the minimum color difference sum.

摘要翻译： 场顺序彩色显示器的自适应反馈控制方法包括：将输入图像的三原色灰度值转换为新的三原色场和主导色域的灰度值的重排步骤; 对采样间隔内的输入图像的分辨率进行像素采样的采样步骤; 反馈控制步骤，对于Lu'v'颜色空间中的颜色分解值和输入图像的颜色值，对于每个分离的颜色执行逐像素求和以获得色差和，并且执行反馈 控制在一定精度上的色差和; 以及液晶/背光同步步骤，用于根据最小色差和来同步输入图像的液晶信号和背光灰度值。