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1. 发明授权

US08638126B2 Rail-to-rail comparator 有权
标题翻译：轨到轨比较器
公开(公告)号：US08638126B2
公开(公告)日：2014-01-28
申请号：US13352963
申请日：2012-01-18
申请人： Chieh-Min Lo , Tzu-Huan Chiu , Chien-Sheng Chen , Chien-Ping Lu
发明人： Chieh-Min Lo , Tzu-Huan Chiu , Chien-Sheng Chen , Chien-Ping Lu
IPC分类号： H03K5/22
CPC分类号： H03F3/45219 , H03K5/2481
摘要： The present invention discloses a rail-to-rail comparator. The rail-to-rail comparator includes: a positive voltage rail providing a positive supply voltage, a ground voltage rail providing a ground voltage, an input stage, and an output stage. The input stage includes: a positive and a negative input terminals for receiving a first input signal and a second input signal; a first differential amplifier circuit, which includes a pair of depletion NMOS transistors to generate a first pair of differential currents; and a second differential amplifier circuit, which includes a pair of native NMOS transistors to generate a second pair of differential currents. The output stage is coupled to the first differential amplifier circuit and the second differential amplifier circuit, and generates an output signal related to a difference between the first input signal and the second input signal.
摘要翻译：本发明公开了一种轨对轨比较器。轨到轨比较器包括：提供正电源电压的正电压轨，提供接地电压的接地电压轨，输入级和输出级。输入级包括：用于接收第一输入信号和第二输入信号的正和负输入端; 第一差分放大器电路，其包括一对耗尽NMOS晶体管，以产生第一对差分电流; 以及第二差分放大器电路，其包括一对天线NMOS晶体管以产生第二对差分电流。输出级耦合到第一差分放大器电路和第二差分放大器电路，并且产生与第一输入信号和第二输入信号之间的差有关的输出信号。

2. 发明申请

US20130181776A1 RAIL-TO-RAIL COMPARATOR 有权
标题翻译：轨至轨比较器
公开(公告)号：US20130181776A1
公开(公告)日：2013-07-18
申请号：US13352963
申请日：2012-01-18
申请人： CHIEH-MIN LO , Tzu-Huan Chiu , Chien-Sheng Chen , Chien-Ping Lu
发明人： CHIEH-MIN LO , Tzu-Huan Chiu , Chien-Sheng Chen , Chien-Ping Lu
IPC分类号： H03F3/45
CPC分类号： H03F3/45219 , H03K5/2481
摘要： The present invention discloses a rail-to-rail comparator. The rail-to-rail comparator includes: a positive voltage rail providing a positive supply voltage, a ground voltage rail providing a ground voltage, an input stage, and an output stage. The input stage includes: a positive and a negative input terminals for receiving a first input signal and a second input signal; a first differential amplifier circuit, which includes a pair of depletion NMOS transistors to generate a first pair of differential currents; and a second differential amplifier circuit, which includes a pair of native NMOS transistors to generate a second pair of differential currents. The output stage is coupled to the first differential amplifier circuit and the second differential amplifier circuit, and generates an output signal related to a difference between the first input signal and the second input signal.
摘要翻译：本发明公开了一种轨对轨比较器。轨到轨比较器包括：提供正电源电压的正电压轨，提供接地电压的接地电压轨，输入级和输出级。输入级包括：用于接收第一输入信号和第二输入信号的正和负输入端; 第一差分放大器电路，其包括一对耗尽NMOS晶体管，以产生第一对差分电流; 以及第二差分放大器电路，其包括一对天线NMOS晶体管以产生第二对差分电流。输出级耦合到第一差分放大器电路和第二差分放大器电路，并且产生与第一输入信号和第二输入信号之间的差有关的输出信号。

3. 发明申请

US20130049721A1 Linear Regulator and Control Circuit Thereof 审中-公开
标题翻译：线性稳压器及其控制电路
公开(公告)号：US20130049721A1
公开(公告)日：2013-02-28
申请号：US13538384
申请日：2012-06-29
申请人： CHIEH-MIN LO , Tzu-Huan Chiu
发明人： CHIEH-MIN LO , Tzu-Huan Chiu
IPC分类号： G05F1/10
CPC分类号： G05F1/575
摘要： The present invention discloses a linear regulator and a control circuit therefor. The linear regulator includes: a power device coupled between an input voltage and an output voltage; a first error amplifier including a depletion NMOS differential circuit comparing a feedback signal related to the output voltage with a reference signal; a second error amplifier including a native NMOS differential circuit comparing the feedback signal with the reference signal; and a start-up circuit which enables the first error amplifier to dominate control and drive the power device when the linear regulator is at a first stage of a start-up period and enables the second error amplifier to dominate control and drive the power device when the linear regulator is at a second stage after the first stage.
摘要翻译：本发明公开了一种线性调节器及其控制电路。线性调节器包括：耦合在输入电压和输出电压之间的功率器件; 第一误差放大器，包括将与输出电压相关的反馈信号与参考信号进行比较的耗尽NMOS差分电路; 第二误差放大器，包括将反馈信号与参考信号进行比较的天然NMOS差分电路; 以及启动电路，其使得当线性调节器处于启动周期的第一阶段时，能够使第一误差放大器控制和驱动功率器件，并使得第二误差放大器能够主导控制并驱动功率器件，当线性调节器处于第一阶段之后的第二阶段。

4. 发明申请

US20100072915A1 Boost driver circuit with fast discharging function 失效
标题翻译：升压驱动电路具有快速放电功能
公开(公告)号：US20100072915A1
公开(公告)日：2010-03-25
申请号：US12384154
申请日：2009-04-01
申请人： Kwan-Jen Chu , Nien-Hui Kung , Tzu-Huan Chiu , Chien-Ping Lu
发明人： Kwan-Jen Chu , Nien-Hui Kung , Tzu-Huan Chiu , Chien-Ping Lu
IPC分类号： H05B39/04 , G05F1/00
CPC分类号： H05B33/0815 , Y02B20/346
摘要： The present invention discloses a boost driver circuit which converts an input voltage to an output voltage and supplies it to a load, the boost driver circuit comprising: a power transistor electrically connected with a node between the input voltage and the output voltage; a pulse width modulation driver circuit for controlling the operation of the power transistor; an output node electrically connected with the output voltage; a feedback node electrically connected with the load; a low voltage transistor electrically connected with the feedback node; and a clamp and fast discharge circuit electrically connected with the feedback node for discharging the feedback node when the voltage at the feedback node is higher than a predetermined voltage.
摘要翻译：本发明公开了一种升压驱动器电路，其将输入电压转换为输出电压并将其提供给负载，该升压驱动电路包括：功率晶体管，其与输入电压和输出电压之间的节点电连接; 用于控制功率晶体管的操作的脉宽调制驱动电路; 与输出电压电连接的输出节点; 与负载电连接的反馈节点; 与所述反馈节点电连接的低压晶体管; 以及与反馈节点电连接的用于在反馈节点处的电压高于预定电压时对反馈节点放电的钳位和快速放电电路。

5. 发明授权

US08547078B2 Methods for light load efficiency improvement of a buck boost voltage regulator 有权
标题翻译：降压升压稳压器的轻负载效率提高方法
公开(公告)号：US08547078B2
公开(公告)日：2013-10-01
申请号：US12861952
申请日：2010-08-24
申请人： Tzu-Huan Chiu , Kwan-Jen Chu , Chien-Ping Lu , Wei-Hsin Wei
发明人： Tzu-Huan Chiu , Kwan-Jen Chu , Chien-Ping Lu , Wei-Hsin Wei
IPC分类号： G05F1/00
CPC分类号： H02M3/1582 , H02M2001/0032 , Y02B70/16
摘要： Methods are proposed for a buck boost voltage regulator to monitor the output voltage or both the inductor current and the output voltage of the buck boost voltage regulator to control the buck boost voltage regulator to reduce the switching times of the power switches of the buck boost voltage regulator to improve the light load efficiency of the buck boost voltage regulator.
摘要翻译：提出了降压升压电压调节器的方法，以监测降压升压稳压器的输出电压或电感电流和输出电压，以控制降压升压稳压器，以降低降压升压电压的功率开关的开关时间调节器提高降压升压稳压器的轻负载效率。

6. 发明授权

US08294439B2 Buck-boost switching regulator and control circuit and method therefor 有权
标题翻译：降压 - 升压开关稳压器及其控制电路及其方法
公开(公告)号：US08294439B2
公开(公告)日：2012-10-23
申请号：US12799107
申请日：2010-04-19
申请人： Chien-Ping Lu , Kwan-Jen Chu , Tzu-Huan Chiu
发明人： Chien-Ping Lu , Kwan-Jen Chu , Tzu-Huan Chiu
IPC分类号： G05F1/618
CPC分类号： H02J7/0031 , H02M3/1582
摘要： The present invention discloses a buck-boost switching regulator, and a control circuit and a method therefor, to convert an input voltage to an output voltage. The control method comprises: obtaining a feedback signal relating to the output voltage; comparing the feedback signal with a reference voltage to generate an error amplified signal; when the error amplified signal is between a first voltage (V1) and a second voltage (V2), causing the switching regulator to operate in a buck conversion mode; when the error amplified signal is between a third voltage (V3) and a fourth voltage (V4), causing the switching regulator to operate in a boost conversion mode; and when the error amplified signal is between the second voltage and the third voltage, causing the switching regulator to operate in a buck-boost conversion mode in which each power switch operates according to a respective predetermined pulse width, wherein V1
摘要翻译：本发明公开了一种降压 - 升压开关调节器及其输入电压转换为输出电压的控制电路及其方法。控制方法包括：获得与输出电压有关的反馈信号; 将反馈信号与参考电压进行比较以产生误差放大信号; 当误差放大信号在第一电压（V1）和第二电压（V2）之间时，导致开关调节器以降压转换模式工作; 当误差放大信号在第三电压（V3）和第四电压（V4）之间时，使开关调节器以升压转换模式工作; 并且当误差放大信号在第二电压和第三电压之间时，使开关调节器工作在降压 - 升压转换模式，其中每个电源开关根据相应的预定脉冲宽度工作，其中V1

7. 发明授权

US07714556B2 Quick response switching regulator and control method thereof 失效
标题翻译：快速响应开关调节器及其控制方法
公开(公告)号：US07714556B2
公开(公告)日：2010-05-11
申请号：US11892987
申请日：2007-08-29
申请人： Kwan-Jen Chu , Tzu-Huan Chiu , Nien-Hui Kung , Chien-Ping Lu
发明人： Kwan-Jen Chu , Tzu-Huan Chiu , Nien-Hui Kung , Chien-Ping Lu
IPC分类号： G05F1/40
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A quick response switching regulator comprises a power stage having a pair of high-side switch and low-side switch and an inductor connected together by a switching node, a feedback circuit for producing a feedback signal, and a control circuit producing control signals with reference to the feedback signal to control the pair of high-side switch and low-side switch. The feedback circuit is connected to the switching node to shorten the feedback path and speed up the response. The control circuit further monitors the current flowing through the inductor to keep the low-side switch off before the peak of the inductor current becomes higher than a value.
摘要翻译：快速响应开关调节器包括具有一对高侧开关和低侧开关的功率级以及由开关节点连接在一起的电感器，用于产生反馈信号的反馈电路以及产生具有参考的控制信号的控制电路到反馈信号控制一对高侧开关和低侧开关。反馈电路连接到交换节点以缩短反馈路径并加快响应。控制电路进一步监测流经电感器的电流，以在电感电流峰值变得高于一个值之前保持低侧开关断开。

8. 发明申请

US20100052629A1 Adaptive zero current sense apparatus and method for a switching regulator 有权
公开(公告)号：US20100052629A1
公开(公告)日：2010-03-04
申请号：US12588946
申请日：2009-11-03
申请人： Kwan-Jen Chu , Nien-Hui Kung , Tzu-Huan Chiu , Chien-Ping Lu
发明人： Kwan-Jen Chu , Nien-Hui Kung , Tzu-Huan Chiu , Chien-Ping Lu
IPC分类号： H02J3/00
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A switching regulator includes a low-side switch having a body diode. During the low-side switch is on, a zero-current sense circuit monitors the inductor current of the switching regulator and triggers a signal to turn off the low-side switch when the inductor current falls down to a zero-current threshold, to prevent reverse inductor current from the output terminal of the switching regulator. A body-diode turn-on time controller monitors the turn-on time of the body diode and adjusts the zero-current threshold according thereto, and the turn-on time of the body diode can be reduced to an optimal interval subsequently. The self-adjustable zero-current threshold is adaptive according to the application conditions, such as the inductor size, input voltage and output voltage of the switching regulator.

9. 发明授权

US07652945B2 Adaptive zero current sense apparatus and method for a switching regulator 有权
标题翻译：自适应零电流检测装置和开关调节器的方法
公开(公告)号：US07652945B2
公开(公告)日：2010-01-26
申请号：US12078356
申请日：2008-03-31
申请人： Kwan-Jen Chu , Nien-Hui Kung , Tzu-Huan Chiu , Chien-Ping Lu
发明人： Kwan-Jen Chu , Nien-Hui Kung , Tzu-Huan Chiu , Chien-Ping Lu
IPC分类号： G11C5/14
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A switching regulator includes a low-side switch having a body diode. During the low-side switch is on, a zero-current sense circuit monitors the inductor current of the switching regulator and triggers a signal to turn off the low-side switch when the inductor current falls down to a zero-current threshold, to prevent reverse inductor current from the output terminal of the switching regulator. A body-diode turn-on time controller monitors the turn-on time of the body diode and adjusts the zero-current threshold according thereto, and the turn-on time of the body diode can be reduced to an optimal interval subsequently. The self-adjustable zero-current threshold is adaptive according to the application conditions, such as the inductor size, input voltage and output voltage of the switching regulator.
摘要翻译：开关调节器包括具有体二极管的低侧开关。在低侧开关导通时，零电流检测电路监测开关稳压器的电感电流，并在电感电流下降到零电流阈值时触发信号关闭低边开关，以防止反向电感电流从开关稳压器的输出端子。体二极管导通时间控制器监视体二极管的接通时间并根据其调整零电流阈值，并且体二极管的接通时间可以随后降低到最佳间隔。根据应用条件，自适应零电流阈值是自适应的，如开关稳压器的电感尺寸，输入电压和输出电压。

10. 发明授权

US08169159B2 Boost converter LED driver and controller thereof 有权
标题翻译：升压转换器LED驱动器及其控制器
公开(公告)号：US08169159B2
公开(公告)日：2012-05-01
申请号：US12232696
申请日：2008-09-23
申请人： Chien-Ping Lu , Wei-Hsin Wei , Kwan-Jen Chu , Tzu-Huan Chiu
发明人： Chien-Ping Lu , Wei-Hsin Wei , Kwan-Jen Chu , Tzu-Huan Chiu
IPC分类号： G05F1/00 , H05B37/02 , H05B39/04 , H05B41/36
CPC分类号： H05B33/0815
摘要： A LED driver is disclosed for providing a current for LED lighting. The LED driver includes an inductor and a controller having a power switch, and the inductor, the power switch and a LED to be driven are configured to be an asynchronous boost converter. Because the driven LED serves as a rectifier diode of the asynchronous boost converter, the controller may have fewer components and requires smaller die area.
摘要翻译：公开了一种用于为LED照明提供电流的LED驱动器。 LED驱动器包括电感器和具有电源开关的控制器，并且电感器，电源开关和要驱动的LED被配置为异步升压转换器。由于驱动LED用作异步升压转换器的整流二极管，所以控制器可能具有较少的元件并且需要更小的管芯面积。

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