公开(公告)号：US09465394B2

公开(公告)日：2016-10-11

申请号：US14210307

申请日：2014-03-13

Applicant: Silicon Motion Inc.

Inventor： Chiao-Hsing Wang

IPC: G05F1/00 ,  G05F1/56 ,  G05F1/575

CPC classification number: G05F1/56 ,  G05F1/575

Abstract: A low-drop regulator (LDO) apparatus includes an operational amplifier, a buffer stage circuit, and a power transistor. The operational amplifier is used for receiving a reference voltage and a feedback voltage to generate a first voltage. The buffer stage circuit is coupled to the power transistor and the operational amplifier and used for buffering the first voltage to generate a second voltage. The power transistor is coupled to the buffer stage circuit and used for generating an output voltage according to the second voltage wherein the output voltage is proportional to the feedback voltage. In addition, the buffer stage circuit is arranged to determine whether to mirror and generate a mirrored current according to the first voltage and to generate the second voltage for providing the second voltage to the power transistor to control on/off state of the power transistor when the mirrored current is generated.

Abstract translation: 低压调节器（LDO）装置包括运算放大器，缓冲级电路和功率晶体管。 运算放大器用于接收参考电压和反馈电压以产生第一电压。 缓冲级电路耦合到功率晶体管和运算放大器，用于缓冲第一电压以产生第二电压。 功率晶体管耦合到缓冲级电路，用于根据第二电压产生输出电压，其中输出电压与反馈电压成比例。 此外，缓冲级电路被配置为根据第一电压来确定是镜像并产生镜像电流，并且产生用于向功率晶体管提供第二电压的第二电压以控制功率晶体管的导通/截止状态，当 生成镜像电流。

公开(公告)号：US20140285165A1

公开(公告)日：2014-09-25

申请号：US14205395

申请日：2014-03-12

Applicant: Silicon Motion Inc.

Inventor： Tsun-Hsin Wang ,  Chiao-Hsing Wang

IPC: G05F1/56

CPC classification number: G05F1/56 ,  G05F1/575

Abstract: A low-dropout voltage regulator apparatus includes a voltage source circuit, an error amplifier, an output transistor, a resistor-capacitor circuit, a detection circuit, and a current adjusting circuit. The voltage source circuit generates a reference voltage signal and at least one threshold voltage signal. The error amplifier receives the reference voltage signal and a feedback voltage signal to generate an output control signal. The output transistor provides an output current for the output terminal according to the output control signal. The resistor-capacitor circuit generates the feedback voltage signal using voltage dividing according to a voltage corresponding to the output current. The detection circuit compares at least one threshold voltage signal with the output voltage to generate at least one control voltage signal. The current adjusting circuit adaptively adjusts the current passing though the output transistor to decrease the transient response time according to the at least one control voltage signal.

Abstract translation: 低压差稳压器装置包括电压源电路，误差放大器，输出晶体管，电阻 - 电容电路，检测电路和电流调节电路。 电压源电路产生参考电压信号和至少一个阈值电压信号。 误差放大器接收参考电压信号和反馈电压信号以产生输出控制信号。 输出晶体管根据输出控制信号为输出端提供输出电流。 电阻电容电路根据与输出电流对应的电压进行分压，生成反馈电压信号。 检测电路将至少一个阈值电压信号与输出电压进行比较以产生至少一个控制电压信号。 电流调节电路根据至少一个控制电压信号自适应地调节通过输出晶体管的电流以减小瞬态响应时间。

公开(公告)号：US09261892B2

公开(公告)日：2016-02-16

申请号：US14205395

申请日：2014-03-12

Applicant: Silicon Motion Inc.

Inventor： Tsun-Hsin Wang ,  Chiao-Hsing Wang

IPC: G05F1/56 ,  G05F1/575

CPC classification number: G05F1/56 ,  G05F1/575

Abstract: A low-dropout voltage regulator apparatus includes a voltage source circuit, an error amplifier, an output transistor, a resistor-capacitor circuit, a detection circuit, and a current adjusting circuit. The voltage source circuit generates a reference voltage signal and at least one threshold voltage signal. The error amplifier receives the reference voltage signal and a feedback voltage signal to generate an output control signal. The output transistor provides an output current for the output terminal according to the output control signal. The resistor-capacitor circuit generates the feedback voltage signal using voltage dividing according to a voltage corresponding to the output current. The detection circuit compares at least one threshold voltage signal with the output voltage to generate at least one control voltage signal. The current adjusting circuit adaptively adjusts the current passing though the output transistor to decrease the transient response time according to the at least one control voltage signal.

Abstract translation: 低压差稳压器装置包括电压源电路，误差放大器，输出晶体管，电阻 - 电容电路，检测电路和电流调节电路。 电压源电路产生参考电压信号和至少一个阈值电压信号。 误差放大器接收参考电压信号和反馈电压信号以产生输出控制信号。 输出晶体管根据输出控制信号为输出端提供输出电流。 电阻电容电路根据与输出电流对应的电压进行分压，生成反馈电压信号。 检测电路将至少一个阈值电压信号与输出电压进行比较以产生至少一个控制电压信号。 电流调节电路根据至少一个控制电压信号自适应地调节通过输出晶体管的电流以减小瞬态响应时间。

公开(公告)号：US09535444B2

公开(公告)日：2017-01-03

申请号：US14322935

申请日：2014-07-03

Applicant: Silicon Motion Inc.

Inventor： Chiao-Hsing Wang

IPC: G05F3/16 ,  H03F1/30 ,  H03F3/45

CPC classification number: G05F3/16 ,  H03F1/301 ,  H03F3/45183 ,  H03F2200/447 ,  H03F2203/45286 ,  H03F2203/45612

Abstract: A differential operational amplifier, which comprises: a voltage adjusting module, coupled between a first predetermined voltage source and a second predetermined voltage source, for adjusting a first voltage via a first voltage adjusting value to generate a first adjusted voltage, and for adjusting a second voltage via a second voltage adjusting value to generate a second adjusted voltage, wherein the first voltage adjusting value and the second voltage adjusting value change corresponding to a temperature; and a differential signal computing module, coupled between the first predetermined voltage source and the second predetermined voltage source, for generating an output voltage according the first adjusted voltage and the second adjusted voltage.

Abstract translation: 一种差分运算放大器，包括：电压调节模块，耦合在第一预定电压源和第二预定电压源之间，用于经由第一电压调整值调节第一电压以产生第一调整电压，并用于调节第二电压源 电压经由第二电压调整值产生第二调整电压，其中所述第一电压调整值和所述第二电压调整值对应于温度而变化; 以及耦合在所述第一预定电压源和所述第二预定电压源之间的差分信号计算模块，用于根据所述第一调整电压和所述第二调整电压产生输出电压。

公开(公告)号：US20150185753A1

公开(公告)日：2015-07-02

申请号：US14322935

申请日：2014-07-03

Applicant: Silicon Motion Inc.

Inventor： Chiao-Hsing Wang

IPC: G05F3/16 ,  H03F3/45 ,  H03F1/30

CPC classification number: G05F3/16 ,  H03F1/301 ,  H03F3/45183 ,  H03F2200/447 ,  H03F2203/45286 ,  H03F2203/45612

Abstract: A differential operational amplifier, which comprises: a voltage adjusting module, coupled between a first predetermined voltage source and a second predetermined voltage source, for adjusting a first voltage via a first voltage adjusting value to generate a first adjusted voltage, and for adjusting a second voltage via a second voltage adjusting value to generate a second adjusted voltage, wherein the first voltage adjusting value and the second voltage adjusting value change corresponding to a temperature; and a differential signal computing module, coupled between the first predetermined voltage source and the second predetermined voltage source, for generating an output voltage according the first adjusted voltage and the second adjusted voltage.

Abstract translation: 一种差分运算放大器，包括：电压调节模块，耦合在第一预定电压源和第二预定电压源之间，用于经由第一电压调整值调节第一电压以产生第一调整电压，并用于调节第二电压源 电压经由第二电压调整值产生第二调整电压，其中所述第一电压调整值和所述第二电压调整值对应于温度而变化; 以及耦合在所述第一预定电压源和所述第二预定电压源之间的差分信号计算模块，用于根据所述第一调整电压和所述第二调整电压产生输出电压。

公开(公告)号：US20150185746A1

公开(公告)日：2015-07-02

申请号：US14324054

申请日：2014-07-03

Applicant: Silicon Motion Inc.

Inventor： Chiao-Hsing Wang

IPC: G05F1/46

CPC classification number: G05F1/468 ,  G05F3/30

Abstract: A bandgap reference voltage generating circuit, comprising: a current mirror, for respectively generating a first, a second and a third currents at a first, a second and a third current output terminals; a first OP; an input voltage generating module, for respectively generating a first, a second voltages at a first, a second operational input terminals of the first OP according to the first, second currents, wherein the first OP generates a control voltage to the current mirror according to the first, second voltages; and a voltage keeping module, comprising a first current receiving terminal for receiving the third current to generate a third voltage, and a reference voltage generating terminal coupled to a reference voltage resistance device and for generating a reference voltage according to the third current. The voltage keeping module controls the third voltage to be the same as the first or the second voltage.

Abstract translation: 一种带隙参考电压产生电路，包括：电流镜，用于在第一，第二和第三电流输出端分别产生第一，第二和第三电流; 第一个OP; 输入电压产生模块，用于根据第一，第二电流在第一OP的第一操作输入端分别产生第一电压，第二电压，其中第一OP产生对电流镜的控制电压，根据 第一，第二电压; 以及电压保持模块，包括用于接收第三电流以产生第三电压的第一电流接收端子，以及耦合到参考电压电阻装置并用于根据第三电流产生参考电压的参考电压产生端子。 电压保持模块将第三电压控制为与第一或第二电压相同。

公开(公告)号：US20150097540A1

公开(公告)日：2015-04-09

申请号：US14210307

申请日：2014-03-13

Applicant: Silicon Motion Inc.

Inventor： Chiao-Hsing Wang

IPC: G05F1/56

CPC classification number: G05F1/56 ,  G05F1/575

Abstract: A low-drop regulator (LDO) apparatus includes an operational amplifier, a buffer stage circuit, and a power transistor. The operational amplifier is used for receiving a reference voltage and a feedback voltage to generate a first voltage. The buffer stage circuit is coupled to the power transistor and the operational amplifier and used for buffering the first voltage to generate a second voltage. The power transistor is coupled to the buffer stage circuit and used for generating an output voltage according to the second voltage wherein the output voltage is proportional to the feedback voltage. In addition, the buffer stage circuit is arranged to determine whether to mirror and generate a mirrored current according to the first voltage and to generate the second voltage for providing the second voltage to the power transistor to control on/off state of the power transistor when the mirrored current is generated.

Abstract translation: 低压调节器（LDO）装置包括运算放大器，缓冲级电路和功率晶体管。 运算放大器用于接收参考电压和反馈电压以产生第一电压。 缓冲级电路耦合到功率晶体管和运算放大器，用于缓冲第一电压以产生第二电压。 功率晶体管耦合到缓冲级电路，用于根据第二电压产生输出电压，其中输出电压与反馈电压成比例。 此外，缓冲级电路被配置为根据第一电压来确定是镜像并产生镜像电流，并且产生用于向功率晶体管提供第二电压的第二电压以控制功率晶体管的导通/截止状态，当 生成镜像电流。