公开(公告)号：US08638126B2

公开(公告)日：2014-01-28

申请号：US13352963

申请日：2012-01-18

申请人： Chieh-Min Lo ,  Tzu-Huan Chiu ,  Chien-Sheng Chen ,  Chien-Ping Lu

发明人： Chieh-Min Lo ,  Tzu-Huan Chiu ,  Chien-Sheng Chen ,  Chien-Ping Lu

IPC分类号： H03K5/22

CPC分类号： H03F3/45219 ,  H03K5/2481

摘要： The present invention discloses a rail-to-rail comparator. The rail-to-rail comparator includes: a positive voltage rail providing a positive supply voltage, a ground voltage rail providing a ground voltage, an input stage, and an output stage. The input stage includes: a positive and a negative input terminals for receiving a first input signal and a second input signal; a first differential amplifier circuit, which includes a pair of depletion NMOS transistors to generate a first pair of differential currents; and a second differential amplifier circuit, which includes a pair of native NMOS transistors to generate a second pair of differential currents. The output stage is coupled to the first differential amplifier circuit and the second differential amplifier circuit, and generates an output signal related to a difference between the first input signal and the second input signal.

摘要翻译： 本发明公开了一种轨对轨比较器。 轨到轨比较器包括：提供正电源电压的正电压轨，提供接地电压的接地电压轨，输入级和输出级。 输入级包括：用于接收第一输入信号和第二输入信号的正和负输入端; 第一差分放大器电路，其包括一对耗尽NMOS晶体管，以产生第一对差分电流; 以及第二差分放大器电路，其包括一对天线NMOS晶体管以产生第二对差分电流。 输出级耦合到第一差分放大器电路和第二差分放大器电路，并且产生与第一输入信号和第二输入信号之间的差有关的输出信号。

公开(公告)号：US08547078B2

公开(公告)日：2013-10-01

申请号：US12861952

申请日：2010-08-24

申请人： Tzu-Huan Chiu ,  Kwan-Jen Chu ,  Chien-Ping Lu ,  Wei-Hsin Wei

发明人： Tzu-Huan Chiu ,  Kwan-Jen Chu ,  Chien-Ping Lu ,  Wei-Hsin Wei

IPC分类号： G05F1/00

CPC分类号： H02M3/1582 ,  H02M2001/0032 ,  Y02B70/16

摘要： Methods are proposed for a buck boost voltage regulator to monitor the output voltage or both the inductor current and the output voltage of the buck boost voltage regulator to control the buck boost voltage regulator to reduce the switching times of the power switches of the buck boost voltage regulator to improve the light load efficiency of the buck boost voltage regulator.

摘要翻译： 提出了降压升压电压调节器的方法，以监测降压升压稳压器的输出电压或电感电流和输出电压，以控制降压升压稳压器，以降低降压升压电压的功率开关的开关时间 调节器提高降压升压稳压器的轻负载效率。

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。

公开(公告)号：US07696806B2

公开(公告)日：2010-04-13

申请号：US12034847

申请日：2008-02-21

申请人： Kwan-Jen Chu ,  Chien-Ping Lu

发明人： Kwan-Jen Chu ,  Chien-Ping Lu

IPC分类号： H03L5/00

CPC分类号： H03K3/356104

摘要： The present invention discloses a level shift circuit which comprises: an input driver circuit; a capacitor having a first end electrically connected with the output of the input driver circuit; an output driver circuit electrically connected with a second end of the capacitor; and a feedback latch circuit electrically connected between the output of the output driver circuit and the second end of the capacitor, for maintaining the voltage level at the second end of the capacitor.

摘要翻译： 本发明公开了一种电平移位电路，包括：输入驱动电路; 电容器，其具有与输入驱动电路的输出电连接的第一端; 与电容器的第二端电连接的输出驱动电路; 以及电连接在输出驱动器电路的输出端和电容器的第二端之间的反馈锁存电路，用于保持电容器第二端处的电压电平。

公开(公告)号：US20100031071A1

公开(公告)日：2010-02-04

申请号：US12182074

申请日：2008-07-29

申请人： Chien-Ping LU ,  Stephen D. Lew ,  Robert William Chapman

发明人： Chien-Ping LU ,  Stephen D. Lew ,  Robert William Chapman

IPC分类号： G06F1/32

CPC分类号： G06F1/3203

摘要： A system and method for transitions a computing system between operating modes that have different power consumption characteristics. When a system management unit (SMU) determines that the computing system is in a low activity state, the SMU transitions the central processing unit (CPU) into a low power operating mode after the CPU stores critical operating state of the CPU in a memory. The SMU then intercepts and processes interrupts intended for the CPU, modifying a copy of the critical operating state. This effectively extends the time during which the CPU stays in lower power mode. When the SMU determines that the computing system exits a low activity state, the copy of the critical operating state is stored in the memory and the SMU transitions the CPU into a high power operating mode using the modified critical operating state.

摘要翻译： 一种用于在具有不同功耗特性的操作模式之间转换计算系统的系统和方法。 当系统管理单元（SMU）确定计算系统处于低活动状态时，在CPU将CPU的临界操作状态存储在存储器中之后，SMU将中央处理单元（CPU）转换为低功耗操作模式。 然后，SMU拦截并处理用于CPU的中断，修改关键操作状态的副本。 这有效地延长了CPU处于较低功耗模式的时间。 当SMU确定计算系统退出低活动状态时，关键操作状态的副本存储在存储器中，并且SMU使用修改的关键操作状态将CPU转换为高功率​​操作模式。

公开(公告)号：US08917062B2

公开(公告)日：2014-12-23

申请号：US13597653

申请日：2012-08-29

申请人： Chien-Ping Lu ,  Nien-Hui Kung ,  Li-Wei Lee ,  Chia-Hsiang Lin ,  Chen-Hsiang Hsiao ,  Ko-Ching Su

发明人： Chien-Ping Lu ,  Nien-Hui Kung ,  Li-Wei Lee ,  Chia-Hsiang Lin ,  Chen-Hsiang Hsiao ,  Ko-Ching Su

IPC分类号： H02J7/00 ,  H02J7/16 ,  H02J7/06

CPC分类号： H02J7/0072

摘要： The present invention discloses a charge control circuit for supplying power from an external power source to a first common node and charging a second common node from the first common node. A regulator circuit is coupled between the external power source and the first common node, and a transistor is coupled between the first common node and the second common node. The present invention detects an operation parameter of the transistor and controls an internal voltage source to generate a non-predetermined voltage difference accordingly. When the sum of the voltage at the second common node and the non-predetermined voltage is equal to or higher than the reference voltage, the voltage at the first common node is regulated to a level higher than the voltage at the second common node, and the transistor is in an optimum conductive state.

摘要翻译： 本发明公开了一种用于从外部电源向第一公共节点提供电力并从第一公共节点对第二公共节点充电的充电控制电路。 调节器电路耦合在外部电源和第一公共节点之间，并且晶体管耦合在第一公共节点和第二公共节点之间。 本发明检测晶体管的操作参数，并且控制内部电压源以相应地产生非预定的电压差。 当第二公共节点和非预定电压之间的电压之和等于或高于参考电压时，第一公共节点处的电压被调节到高于第二公共节点处的电压的电平，以及 晶体管处于最佳导通状态。

公开(公告)号：US20130181776A1

公开(公告)日：2013-07-18

申请号：US13352963

申请日：2012-01-18

申请人： CHIEH-MIN LO ,  Tzu-Huan Chiu ,  Chien-Sheng Chen ,  Chien-Ping Lu

发明人： CHIEH-MIN LO ,  Tzu-Huan Chiu ,  Chien-Sheng Chen ,  Chien-Ping Lu

IPC分类号： H03F3/45

CPC分类号： H03F3/45219 ,  H03K5/2481

摘要： The present invention discloses a rail-to-rail comparator. The rail-to-rail comparator includes: a positive voltage rail providing a positive supply voltage, a ground voltage rail providing a ground voltage, an input stage, and an output stage. The input stage includes: a positive and a negative input terminals for receiving a first input signal and a second input signal; a first differential amplifier circuit, which includes a pair of depletion NMOS transistors to generate a first pair of differential currents; and a second differential amplifier circuit, which includes a pair of native NMOS transistors to generate a second pair of differential currents. The output stage is coupled to the first differential amplifier circuit and the second differential amplifier circuit, and generates an output signal related to a difference between the first input signal and the second input signal.

摘要翻译： 本发明公开了一种轨对轨比较器。 轨到轨比较器包括：提供正电源电压的正电压轨，提供接地电压的接地电压轨，输入级和输出级。 输入级包括：用于接收第一输入信号和第二输入信号的正和负输入端; 第一差分放大器电路，其包括一对耗尽NMOS晶体管，以产生第一对差分电流; 以及第二差分放大器电路，其包括一对天线NMOS晶体管以产生第二对差分电流。 输出级耦合到第一差分放大器电路和第二差分放大器电路，并且产生与第一输入信号和第二输入信号之间的差有关的输出信号。

公开(公告)号：US07994728B2

公开(公告)日：2011-08-09

申请号：US12384154

申请日：2009-04-01

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：US20100019682A1

公开(公告)日：2010-01-28

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： H05B41/26

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：US20090212841A1

公开(公告)日：2009-08-27

申请号：US12034847

申请日：2008-02-21

申请人： Kwan-Jen Chu ,  Chien-Ping Lu

发明人： Kwan-Jen Chu ,  Chien-Ping Lu

IPC分类号： H03L5/00

CPC分类号： H03K3/356104

摘要： The present invention discloses a level shift circuit which comprises: an input driver circuit; a capacitor having a first end electrically connected with the output of the input driver circuit; an output driver circuit electrically connected with a second end of the capacitor; and a feedback latch circuit electrically connected between the output of the output driver circuit and the second end of the capacitor, for maintaining the voltage level at the second end of the capacitor.

摘要翻译： 本发明公开了一种电平移位电路，包括：输入驱动电路; 电容器，其具有与输入驱动电路的输出电连接的第一端; 与电容器的第二端电连接的输出驱动电路; 以及电连接在输出驱动器电路的输出端和电容器的第二端之间的反馈锁存电路，用于保持电容器第二端处的电压电平。