公开(公告)号：US07847516B2

公开(公告)日：2010-12-07

申请号：US12078887

申请日：2008-04-08

Applicant: Nien-Hui Kung ,  Kwan-Jen Chu

Inventor： Nien-Hui Kung ,  Kwan-Jen Chu

IPC: H02J7/06 ,  H02J7/24

CPC classification number: H02J7/0047 ,  G01R31/04 ,  H02J7/0029

Abstract: 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.

Abstract translation: 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：US07714556B2

公开(公告)日：2010-05-11

申请号：US11892987

申请日：2007-08-29

Applicant: Kwan-Jen Chu ,  Tzu-Huan Chiu ,  Nien-Hui Kung ,  Chien-Ping Lu

Inventor： Kwan-Jen Chu ,  Tzu-Huan Chiu ,  Nien-Hui Kung ,  Chien-Ping Lu

IPC: G05F1/40

CPC classification number: H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: 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.

Abstract translation: 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

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

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

IPC: H02J7/04

CPC classification number: H02J7/0031

Abstract: 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.

Abstract translation: 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

Applicant: Kwan-Jen Chu ,  Nien-Hui Kung ,  Tzu-Huan Chiu ,  Chien-Ping Lu

Inventor： Kwan-Jen Chu ,  Nien-Hui Kung ,  Tzu-Huan Chiu ,  Chien-Ping Lu

IPC: H02J3/00

CPC classification number: H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: 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

Applicant: Kwan-Jen Chu ,  Nien-Hui Kung ,  Tzu-Huan Chiu ,  Chien-Ping Lu

Inventor： Kwan-Jen Chu ,  Nien-Hui Kung ,  Tzu-Huan Chiu ,  Chien-Ping Lu

IPC: G11C5/14

CPC classification number: H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: 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.

Abstract translation: 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：US08648573B2

公开(公告)日：2014-02-11

申请号：US13610043

申请日：2012-09-11

Applicant: Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Ying-Hsin Hsing

Inventor： Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Ying-Hsin Hsing

IPC: H02J7/00 ,  H02J1/10

CPC classification number: H02J7/0077 ,  H02J2007/0062 ,  Y10T307/50

Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.

Abstract translation: 用于便携式设备的充电器包括连接到数据引脚的USB检测器，以在USB收发器使能之前检测数据引脚上的有效电阻，以识别USB或适配器插头，并相应地控制电池的充电电流。

公开(公告)号：US08169208B2

公开(公告)日：2012-05-01

申请号：US12457665

申请日：2009-06-18

Applicant: Nien-Hui Kung ,  Kwan-Jen Chu

Inventor： Nien-Hui Kung ,  Kwan-Jen Chu

IPC: G05F1/40 ,  G05F1/613

CPC classification number: H02M3/158 ,  H02M2001/0009

Abstract: For output current detection of a voltage regulator, the currents in a high-side transistor and a low-side transistor of the voltage regulator are sensed and summarized to a summed current to flow through a setting resistor. The voltage variation on the setting resistor is monitored to provide a feedback signal for feedback control in the voltage regulator. This detection scheme removes the current sensing resistor from the charging current path of the voltage regulator to prevent efficiency loss on it, and is much less sensitive to noise interference because greater voltage variation is available by using a greater setting resistor.

Abstract translation: 对于电压调节器的输出电流检测，电压调节器的高侧晶体管和低侧晶体管中的电流被感测并汇总为相加电流以流过设定电阻。 监控设定电阻上的电压变化，为电压调节器中的反馈控制提供反馈信号。 该检测方案从电压调节器的充电电流路径中去除电流检测电阻，以防止其上的效率损失，并且对噪声干扰的敏感性要小得多，因为通过使用更大的设置电阻可以获得更大的电压变化。

公开(公告)号：US08140726B2

公开(公告)日：2012-03-20

申请号：US12604566

申请日：2009-10-23

Applicant: Nien-Hui Kung ,  Kwan-Jen Chu

Inventor： Nien-Hui Kung ,  Kwan-Jen Chu

IPC: G06F13/42 ,  G06F13/00

CPC classification number: G06F13/4072 ,  Y10T307/858

Abstract: The present invention discloses a single wire transmission interface comprising: a signal detection circuit detecting level switchings of a transmission signal from a single wire, and generating an enable signal and a decoded signal corresponding to the transmission signal, the level switchings including first switchings from a first level to a second level and second switchings from the second level to the first level, wherein the enable signal starts according to one first switching of the transmission signal, and stops when no first switching occur in a predetermined period after one second switching of the transmission signal, and wherein rising edges (or falling edges) of the decoded signal correspond to the first switchings of the transmission signal; a counter, under enablement by the enable signal, counting a number of the rising edges (or the rising edges) of the decoded signal or the first switchings of the transmission signal, and generating a count; a single short pulse generator generating a short pulse according to the start of the enable signal to reset the decoded signal.

Abstract translation: 本发明公开了一种单线传输接口，包括：信号检测电路，检测来自单线的传输信号的电平切换，并产生使能信号和对应于传输信号的解码信号，电平切换包括从 第一电平到第二电平和从第二电平到第一电平的第二次切换，其中使能信号根据发送信号的一次第一次切换开始，并且在第一次切换之后的预定时段内不发生第一次切换时停止 传输信号，并且其中解码信号的上升沿（或下降沿）对应于传输信号的第一次切换; 计数器，通过使能信号启用，对解码信号的上升沿（或上升沿）的数量或发送信号的第一次切换进行计数，并产生计数; 单个短脉冲发生器根据使能信号的起始产生短脉冲以复位解码信号。

公开(公告)号：US07994728B2

公开(公告)日：2011-08-09

申请号：US12384154

申请日：2009-04-01

Applicant: Kwan-Jen Chu ,  Nien-Hui Kung ,  Tzu-Huan Chiu ,  Chien-Ping Lu

Inventor： Kwan-Jen Chu ,  Nien-Hui Kung ,  Tzu-Huan Chiu ,  Chien-Ping Lu

IPC: H05B37/00

CPC classification number: H05B33/0815 ,  Y02B20/346

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110080142A1

公开(公告)日：2011-04-07

申请号：US12574035

申请日：2009-10-06

Applicant: Nien-Hui Kung ,  Kwan-Jen Chu

Inventor： Nien-Hui Kung ,  Kwan-Jen Chu

IPC: H02J7/10 ,  H02J7/00

CPC classification number: H02J7/0072

Abstract: A charger circuit comprising: a charging path coupled between an input voltage and a battery; a power switch on the charging path; a switch control circuit controlling the power switch; a timer counting a charging period; and a low current control circuit issuing a signal to the switch control circuit to control the power switch such that a charging current is maintained to be a predetermined low current when the timer counts to a predetermined maximum charging period.

Abstract translation: 一种充电器电路，包括：耦合在输入电压和电池之间的充电路径; 充电路径上的电源开关; 控制电源开关的开关控制电路; 定时器计数充电周期; 以及低电流控制电路，向开关控制电路发出信号以控制电源开关，使得当定时器计数到预定的最大充电时段时，将充电电流保持为预定的低电流。