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    Overvoltage protection circuit for use in charger circuit system and charge circuit with overvoltage protection function
    1.
    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。

    Overvoltage protection circuit for use in charger circuit system and charge circuit with overvoltage protection function
    3.
    发明授权
    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：US08159195B2

    公开(公告)日：2012-04-17

    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： H02J7/10 ,  H02J7/00 ,  H02J7/04 ,  H02H3/00

    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。

    Charging circuit with application system thereof
    6.
    发明授权
    Charging circuit with application system thereof 有权
    充电电路及其应用系统

    公开(公告)号：US08378640B2

    公开(公告)日：2013-02-19

    申请号：US12631988

    申请日：2009-12-07

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

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

    IPC分类号： H02J7/00 ,  H02J7/04 ,  H02J7/24

    CPC分类号： H02J7/0073

    摘要： 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.

    摘要翻译： 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。

    Power safety system
    7.
    发明授权
    Power safety system 失效
    电力安全系统

    公开(公告)号：US08203234B2

    公开(公告)日：2012-06-19

    申请号：US12720024

    申请日：2010-03-09

    申请人： Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Chun-Tsung Chen

    发明人： Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Chun-Tsung Chen

    IPC分类号： H02J1/10 ,  H02J3/38

    CPC分类号： H02J7/0031 ,  Y10T307/544

    摘要： A power safety system includes a first MOS, a second MOS, a switch and a body controller. The first MOS is connected between a power input and a power output. The second MOSFET is connected between the power output and a charging output. The switch has an end connected to the body of the first MOS, and the opposite end switched between the source and the drain of the first MOS. A body controller controls the switch according to the voltage at the power input and the voltage at the power output, to connect the body of the first MOS to the source or the drain of the first MOS. By switching the switch, the first MOS will have a parasitic diode effective to prevent a reverse current from the power output to the power input.

    摘要翻译： 电力安全系统包括第一MOS，第二MOS，开关和主体控制器。 第一个MOS连接在电源输入和电源输出之间。 第二个MOSFET连接在电源输出和充电输出之间。 开关的端部连接到第一MOS的主体，并且相对端在第一MOS的源极和漏极之间切换。 主体控制器根据电源输入端的电压和电源输出端的电压来控制开关，将第一MOS的主体连接到第一个MOS的源极或漏极。 通过切换开关，第一个MOS将有一个有效的寄生二极管，以防止从功率输出到电源输入的反向电流。

    Circuit and method for detecting absent battery condition in a linear charger
    8.
    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
    9.
    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。

    Adaptive zero current sense apparatus and method for a switching regulator
    10.
    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.