公开(公告)号：US20120038332A1

公开(公告)日：2012-02-16

申请号：US13194628

申请日：2011-07-29

Applicant: Yung-Cheng LIN

Inventor： Yung-Cheng LIN

IPC: G05F1/573

CPC classification number: G05F1/575

Abstract: A linear regulator and a current sensing circuit are provided. The linear regulator comprises a pass transistor, a compensation capacitor, a variable resistor, an error amplifier and a current sensing circuit comprising a sense transistor controlled by the error amplifier and a voltage follower coupled with the second terminal of the pass transistor and the second terminal of the sense transistor. The sense transistor receives an input voltage, and generates a sense current proportional to a pass current. The voltage follower controls the voltage at the second terminal of the sense transistor to be the same as that at the second terminal of the pass transistor, and adjusts the resistance of the variable resistor according to the voltages at the second terminal of the pass transistor, the voltage at the second terminal of the sense transistor, and the sense current flowing through the sense transistor.

Abstract translation: 提供线性调节器和电流检测电路。 线性调节器包括传输晶体管，补偿电容器，可变电阻器，误差放大器和电流感测电路，其包括由误差放大器控制的检测晶体管和与传输晶体管的第二端子耦合的电压跟随器，以及第二端子 的感测晶体管。 感测晶体管接收输入电压，并产生与通过电流成正比的感测电流。 电压跟随器将感测晶体管的第二端子处的电压控制为与通过晶体管的第二端子处的电压相同，并根据传输晶体管的第二端子处的电压来调节可变电阻器的电阻， 感测晶体管的第二端子处的电压以及流过读出晶体管的感测电流。

公开(公告)号：US07652534B1

公开(公告)日：2010-01-26

申请号：US12263499

申请日：2008-11-02

Applicant: Chia-Hung Lin ,  Jr-Ching Lin ,  Yung-Cheng Lin ,  Tsung-Hau Chang

Inventor： Chia-Hung Lin ,  Jr-Ching Lin ,  Yung-Cheng Lin ,  Tsung-Hau Chang

IPC: H03F3/45

CPC classification number: H03F3/45219 ,  H03F1/0261 ,  H03F1/086 ,  H03F3/3028 ,  H03F2200/153 ,  H03F2200/513 ,  H03F2203/45514 ,  H03F2203/45634 ,  H03F2203/45726

Abstract: A rail-to-rail operational amplifier capable of reducing current consumption includes an amplification stage circuit including a first compensation output terminal and a second compensation output terminal, for generating an amplified signal according to an input signal, an output stage circuit coupled to the amplification stage circuit, for outputting the amplified signal, and a compensation circuit coupled to the amplification stage circuit and the output stage circuit. The compensation circuit includes a first voltage generator for generating a first voltage, a second voltage generator for generating a second voltage, a first compensation capacitor, a second compensation capacitor, and four switches named from a first switch to a fourth switch, wherein the first voltage is approximately a steady state voltage of the first compensation output terminal and the second voltage is approximately a steady state voltage of the second compensation output terminal.

Abstract translation: 能够降低电流消耗的轨至轨运算放大器包括：放大级电路，包括第一补偿输出端和第二补偿输出端，用于根据输入信号产生放大信号;输出级电路，耦合到放大 用于输出放大的信号，以及补偿电路，耦合到放大级电路和输出级电路。 补偿电路包括用于产生第一电压的第一电压发生器，用于产生第二电压的第二电压发生器，第一补偿电容器，第二补偿电容器以及从第一开关命名为第四开关的四个开关，其中第一 电压约为第一补偿输出端子的稳态电压，第二电压约为第二补偿输出端子的稳态电压。

公开(公告)号：US20090085654A1

公开(公告)日：2009-04-02

申请号：US12025674

申请日：2008-02-04

Applicant: Yung-Cheng Lin

Inventor： Yung-Cheng Lin

IPC: G05F1/10

CPC classification number: G05F3/205

Abstract: A biasing circuit includes a reference current source, a first transistor, a second transistor, and a voltage buffer. The first transistor includes a first connection end coupled to the reference current source, a control end, and a second connection end coupled to a system grounding end. The second transistor includes a control end coupled to the control end of the first transistor, a first connection end coupled to a system power supply end, and a second connection end coupled to the system grounding end. The voltage buffer includes an input end coupled to an output end of the reference current source and the first connection end of the first transistor, and an output end coupled to the control ends of the first transistor and the second transistor. The first transistor and the second transistor constitute a current mirror.

Abstract translation: 偏置电路包括参考电流源，第一晶体管，第二晶体管和电压缓冲器。 第一晶体管包括耦合到参考电流源的第一连接端，控制端和耦合到系统接地端的第二连接端。 第二晶体管包括耦合到第一晶体管的控制端的控制端，耦合到系统电源端的第一连接端和耦合到系统接地端的第二连接端。 电压缓冲器包括耦合到参考电流源的输出端和第一晶体管的第一连接端的输入端，以及耦合到第一晶体管和第二晶体管的控制端的输出端。 第一晶体管和第二晶体管构成电流镜。