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

公开(公告)号：US08169198B2

公开(公告)日：2012-05-01

申请号：US12219561

申请日：2008-07-24

申请人： Shui-Mu Lin ,  Jien-Sheng Chen ,  Kwan-Jen Chu ,  Tsung-Wei Huang ,  Chao-Hsuan Chuang

发明人： Shui-Mu Lin ,  Jien-Sheng Chen ,  Kwan-Jen Chu ,  Tsung-Wei Huang ,  Chao-Hsuan Chuang

IPC分类号： G05F1/00

CPC分类号： H02M3/158 ,  H02M1/44

摘要： The phase node voltage or the PWM signal in an asynchronous boost converter is monitored to detect a phase node voltage ringing. When a phase node voltage ringing is detected, a detection signal is asserted to establish a bypass path to bypass the inductor of the converter. A charge bypass circuit is shunt to the inductor, and controlled by the detection signal to establish the bypass path. Due to the bypass path, the phase node voltage is maintained at a constant, and the phase node voltage radiation and input/output noise are eliminated.

摘要翻译： 监控异步升压转换器中的相位节点电压或PWM信号，以检测相位节点电压振铃。 当检测到相位节点电压振铃时，检测信号被断言以建立绕过转换器电感器的旁路路径。 电荷旁路电路分流到电感，并由检测信号控制，建立旁路。 由于旁通路径，相位节点电压保持恒定，并且消除了相位节点电压辐射和输入/输出噪声。

公开(公告)号：US07847516B2

公开(公告)日：2010-12-07

申请号：US12078887

申请日：2008-04-08

申请人： Nien-Hui Kung ,  Kwan-Jen Chu

发明人： Nien-Hui Kung ,  Kwan-Jen Chu

IPC分类号： H02J7/06 ,  H02J7/24

CPC分类号： H02J7/0047 ,  G01R31/04 ,  H02J7/0029

摘要： A circuit and method for detecting absent battery condition in a linear charger apply a detecting signal onto an output terminal of the charger and monitor the output terminal to receive a detected signal. The capacitance at the output terminal is significantly different between the presence and absence of a battery connected to the output terminal, and it is thus available to determine from the detected signal, if no battery is connected to the output terminal.

摘要翻译： 用于检测线性充电器中没有电池状况的电路和方法将检测信号施加到充电器的输出端子上，并监视输出端子以接收检测到的信号。 输出端子的电容在连接到输出端子的电池的存在和不存在之间是显着不同的，因此可以从检测到的信号确定是否没有电池连接到输出端子。

公开(公告)号：US07746926B2

公开(公告)日：2010-06-29

申请号：US11272699

申请日：2005-11-15

申请人： Kwan-Jen Chu ,  Chung-Lung Pai ,  Po-Shun Chung ,  Jing-Meng Liu

发明人： Kwan-Jen Chu ,  Chung-Lung Pai ,  Po-Shun Chung ,  Jing-Meng Liu

IPC分类号： H03K7/08 ,  H03K9/08

CPC分类号： H02M3/156

摘要： A pulse width modulation (PWM) Regulator System with automatically switching pulse skipping mode (PSM) is disclosed. The PWM regulator system comprises a PWM regulator, a PSM switching module and a pulse generator. The PWM regulator converts the input voltage by PWM. The PSM switching module determines to enter or exit the PSM. The pulse generator adaptively produces pulse signal for the switching regulator to operate in PSM.

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。

公开(公告)号：US20100066312A1

公开(公告)日：2010-03-18

申请号：US12381272

申请日：2009-03-10

申请人： Chien-Ping Lu ,  Nien-Hui Kung ,  Li-Wei Lee ,  Kwan-Jen Chu ,  Ying-Hsin Hsing ,  Chun-Tsung Chen

发明人： Chien-Ping Lu ,  Nien-Hui Kung ,  Li-Wei Lee ,  Kwan-Jen Chu ,  Ying-Hsin Hsing ,  Chun-Tsung Chen

IPC分类号： H02J7/04

CPC分类号： H02J7/0031

摘要： The present invention discloses an overvoltage protection (OVP) circuit for use in a charger circuit system, comprising: a power transistor electrically connected between a voltage supply and a battery; an OVP circuit which turns off the transistor when a voltage supply exceeds a threshold value; and a multiplexing circuit electrically connected between an output of the OVP circuit and the gate of the transistor. The present invention also discloses a charger circuit with an OVP function, comprising: a single power transistor electrically connected between a voltage supply and a battery; an OVP control circuit which turns off the power transistor when a voltage supply exceeds a threshold value; and a charger control circuit which controls the gate of the power transistor to determine a charge current to the battery when the voltage supply does not reach the threshold value.

摘要翻译： 本发明公开了一种用于充电器电路系统的过电压保护（OVP）电路，包括：电连接在电压源和电池之间的功率晶体管; OVP电路，当电压提供超过阈值时，该晶体管截止晶体管; 以及电连接在OVP电路的输出和晶体管的栅极之间的复用电路。 本发明还公开了一种具有OVP功能的充电器电路，包括：电连接在电压源和电池之间的单功率晶体管; OVP控制电路，当电源电压超过阈值时，关断功率晶体管; 以及充电器控制电路，其在电压不达到阈值时控制功率晶体管的栅极以确定到电池的充电电流。

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.

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。

公开(公告)号：US20090195191A1

公开(公告)日：2009-08-06

申请号：US12320503

申请日：2009-01-28

申请人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen ,  Kwan-Jen Chu

发明人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen ,  Kwan-Jen Chu

IPC分类号： H05B37/02

CPC分类号： H05B33/0845 ,  H05B33/0818 ,  Y02B20/347

摘要： A current regulator includes a first current source to provide a reference current varying with a dimming step, and a second current source to generate a drive current for a white LED according to the reference current. The reference current and the dimming step have a relationship identical to or approximating a relationship between luminance and lightness perceived by human eyes. Thus, the white LED is controlled to have a linear variation of the luminance perceived by human eyes when the dimming step is changed.

摘要翻译： 电流调节器包括：第一电流源，用于提供随着调光步长变化的参考电流;以及第二电流源，以根据参考电流产生白光LED的驱动电流。 参考电流和调光步骤具有与人眼感知的亮度和亮度之间的关系相同或近似的关系。 因此，当改变调光步骤时，白色LED被控制为具有人眼感知的亮度的线性变化。

公开(公告)号：US20090128238A1

公开(公告)日：2009-05-21

申请号：US12292061

申请日：2008-11-12

申请人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen ,  Kwan-Jen Chu

发明人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen ,  Kwan-Jen Chu

IPC分类号： H03F3/45

CPC分类号： H03F3/45744 ,  H03F3/3022 ,  H03F3/45183 ,  H03F2203/45212 ,  H03F2203/45616 ,  H03F2203/45726

摘要： A single-ended operational amplifier includes an output stage, a first transconductance amplifier and a second transconductance amplifier. In an offset cancellation mode, two inputs of the first transconductance amplifier are supplied with a reference voltage to sink two currents from two inputs of the output stage respectively, the output stage generates a third current according to the difference between the two currents to charge a capacitor, and the second transconductance amplifier generates two currents according to the voltage in the capacitor to make currents in the two inputs of the output stage equal to each other, thereby canceling the offset of the single-ended operational amplifier.

摘要翻译： 单端运算放大器包括输出级，第一跨导放大器和第二跨导放大器。 在偏移消除模式中，第一跨导放大器的两个输入端被提供有参考电压，以分别从输出级的两个输入端吸收两个电流，输出级根据两个电流之间的差产生第三电流，以对 电容器和第二跨导放大器根据电容器中的电压产生两个电流，以使输出级的两个输入端中的电流彼此相等，从而消除单端运算放大器的偏移。