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。

公开(公告)号：US07940596B2

公开(公告)日：2011-05-10

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： 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：US20080246455A1

公开(公告)日：2008-10-09

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： G05F1/565

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：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：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：US07994728B2

公开(公告)日：2011-08-09

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： H05B37/00

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。

公开(公告)号：US20080174286A1

公开(公告)日：2008-07-24

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： G05F1/00

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：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。

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。