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    Universal serial bus charger circuit and charging method
    1.
    发明申请
    Universal serial bus charger circuit and charging method 有权
    通用串行总线充电器电路和充电方式

    公开(公告)号：US20090102431A1

    公开(公告)日：2009-04-23

    申请号：US12284235

    申请日：2008-09-18

    申请人： Nien-Hui Kung ,  Kwan-Jen Chu ,  Jing-Meng Liu

    发明人： Nien-Hui Kung ,  Kwan-Jen Chu ,  Jing-Meng Liu

    IPC分类号： H02J7/00

    CPC分类号： H02J7/0031 ,  H02J2007/0039 ,  H02J2007/0062

    摘要： The present invention discloses a universal serial bus (USB) charging circuit, comprising: a charging path for charging a battery from a USB host; a charging switch located on the charging path; a current sensing circuit for sensing current information on the charging path; a maximum available current detection circuit for detecting the maximum available current from the USB host; and a loop controller circuit for controlling the charging switch so that the charging current on the charging path is substantially equal to the maximum available current detected by the maximum available current detection circuit, wherein the maximum available current detection circuit detects the maximum available current during circuit initialization and stores it.

    摘要翻译： 本发明公开了一种通用串行总线（USB）充电电路，包括：用于从USB主机对电池充电的充电路径; 位于充电路径上的充电开关; 用于感测充电路径上的当前信息的电流感测电路; 用于检测来自USB主机的最大可用电流的最大可用电流检测电路; 以及环路控制器电路，用于控制充电开关，使得充电路径上的充电电流基本上等于由最大可用电流检测电路检测的最大可用电流，其中最大可用电流检测电路检测电路中的最大可用电流 初始化并存储它。

    Universal serial bus charger circuit and charging method
    2.
    发明授权
    Universal serial bus charger circuit and charging method 有权
    通用串行总线充电器电路和充电方式

    公开(公告)号：US08049462B2

    公开(公告)日：2011-11-01

    申请号：US12284235

    申请日：2008-09-18

    申请人： Nien-Hui Kung ,  Kwan-Jen Chu ,  Jing-Meng Liu

    发明人： Nien-Hui Kung ,  Kwan-Jen Chu ,  Jing-Meng Liu

    IPC分类号： H02J7/02

    CPC分类号： H02J7/0031 ,  H02J2007/0039 ,  H02J2007/0062

    摘要： The present invention discloses a universal serial bus (USB) charging circuit, comprising: a charging path for charging a battery from a USB host; a charging switch located on the charging path; a current sensing circuit for sensing current information on the charging path; a maximum available current detection circuit for detecting the maximum available current from the USB host; and a loop controller circuit for controlling the charging switch so that the charging current on the charging path is substantially equal to the maximum available current detected by the maximum available current detection circuit, wherein the maximum available current detection circuit detects the maximum available current during circuit initialization and stores it.

    摘要翻译： 本发明公开了一种通用串行总线（USB）充电电路，包括：用于从USB主机对电池充电的充电路径; 位于充电路径上的充电开关; 用于感测充电路径上的当前信息的电流感测电路; 用于检测来自USB主机的最大可用电流的最大可用电流检测电路; 以及环路控制器电路，用于控制充电开关，使得充电路径上的充电电流基本上等于由最大可用电流检测电路检测的最大可用电流，其中最大可用电流检测电路检测电路中的最大可用电流 初始化并存储它。

    Circuit and method for detecting absent battery condition in a linear charger
    3.
    发明授权
    Circuit and method for detecting absent battery condition in a linear charger 有权
    用于检测线性充电器中没有电池状况的电路和方法

    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。

    Quick response switching regulator and control method thereof
    4.
    发明授权
    Quick response switching regulator and control method thereof 失效
    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。

    Overvoltage protection circuit for use in charger circuit system and charge circuit with overvoltage protection function
    5.
    发明申请
    Overvoltage protection circuit for use in charger circuit system and charge circuit with overvoltage protection function 失效
    用于充电器电路系统和充电电路的过压保护电路具有过压保护功能

    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。

    Adaptive zero current sense apparatus and method for a switching regulator
    6.
    发明申请
    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.

    Adaptive zero current sense apparatus and method for a switching regulator
    7.
    发明授权
    Adaptive zero current sense apparatus and method for a switching regulator 有权
    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。

    Output current detection of a voltage regulator
    9.
    发明授权
    Output current detection of a voltage regulator 失效
    电压调节器的输出电流检测

    公开(公告)号：US08400133B2

    公开(公告)日：2013-03-19

    申请号：US13279366

    申请日：2011-10-24

    申请人： Nien-Hui Kung ,  Kwan-Jen Chu

    发明人： Nien-Hui Kung ,  Kwan-Jen Chu

    IPC分类号： G05F1/40 ,  G05F1/613

    CPC分类号： H02M3/158 ,  H02M2001/0009

    摘要： For output current detection of a voltage regulator, a sensing circuit is coupled to a high-side element of the regulator and detects the current therein to generate a sensing current. A simulation circuit is coupled to the sensing circuit and generates a summed current by simulation with the sensing current. A setting resistor is coupled to the simulation circuit and receives the summed current to provide an output for feedback control of the voltage regulator.

    摘要翻译： 对于电压调节器的输出电流检测，感测电路耦合到调节器的高侧元件，并检测其中的电流以产生感测电流。 仿真电路耦合到感测电路，并通过感应电流的仿真产生一个总和电流。 设置电阻器耦合到仿真电路并接收总和电流以提供用于电压调节器的反馈控制的输出。

    NMOSFET-base linear charger
    10.
    发明授权
    NMOSFET-base linear charger 有权
    NMOSFET基线性充电器

    公开(公告)号：US08248049B2

    公开(公告)日：2012-08-21

    申请号：US12285186

    申请日：2008-09-30

    申请人： Nien-Hui Kung ,  Kwan-Jen Chu

    发明人： Nien-Hui Kung ,  Kwan-Jen Chu

    IPC分类号： G05F1/573

    CPC分类号： H02J7/0072

    摘要： In an NMOSFET-base linear charger, a pair of common gate charging NMOSFET and sensing NMOSFET have their sources coupled together or virtually shorted to each other, so that these two NMOSFETs have a same gate-source voltage and thereby the sensing NMOSFET reflects the drain-source current of the charging NMOSFET on its drain-source current. From the drain-source current of the sensing NMOSFET, a current sensing signal is generated to control the gate voltage of the charging NMOSFET. By implementing the current source with NMOSFETs, the linear charger has smaller die area and less power loss.

    摘要翻译： 在NMOSFET基线性充电器中，一对公共栅极充电NMOSFET和感测NMOSFET的源极彼此耦合在一起或虚拟短路，使得这两个NMOSFET具有相同的栅极 - 源极电压，从而感测NMOSFET反射漏极 在其漏极 - 源极电流上充电NMOSFET的源极电流。 从感测NMOSFET的漏源电流产生电流感测信号以控制充电NMOSFET的栅极电压。 通过使用NMOSFET实现电流源，线性充电器具有更小的管芯面积和更少的功率损耗。