公开(公告)号：US20140091780A1

公开(公告)日：2014-04-03

申请号：US13928346

申请日：2013-06-26

Applicant: Novatek Microelectronics Corp.

Inventor： Min-Hung Hu ,  Chiu-Huang Huang ,  Chen-Tsung Wu ,  Juin-Wei Huang ,  Pin-Han Su

IPC: G05F1/46

CPC classification number: G05F1/462 ,  G05F3/30

Abstract: A reference voltage generator including a reference voltage generating unit is provided. The reference voltage generating unit receives a first bias voltage current and a first mirror current and generates a reference voltage. The reference voltage generating unit includes a first metal-oxide-semiconductor (MOS) transistor, a second MOS transistor, a first impedance providing element and a second impedance providing element. The first and the second MOS transistors operate in a sub-threshold region so as to generate a first gate-source voltage and a second gate-source voltage having a negative temperature coefficient. The first impedance providing element is configured to generate a first current having a positive temperature coefficient. The second impedance providing element is configured to generate a first voltage having a negative temperature coefficient at its first terminal. The reference voltage is equal to a sum of the second gate-source voltage and the first voltage.

Abstract translation: 提供了包括参考电压产生单元的参考电压发生器。 参考电压产生单元接收第一偏置电压电流和第一反射镜电流并产生参考电压。 参考电压产生单元包括第一金属氧化物半导体（MOS）晶体管，第二MOS晶体管，第一阻抗提供元件和第二阻抗提供元件。 第一和第二MOS晶体管在亚阈值区域中工作，以产生具有负温度系数的第一栅极 - 源极电压和第二栅极 - 源极电压。 第一阻抗提供元件被配置为产生具有正温度系数的第一电流。 第二阻抗提供元件被配置为在其第一端产生具有负温度系数的第一电压。 参考电压等于第二栅极 - 源极电压和第一电压的和。

公开(公告)号：US20170108883A1

公开(公告)日：2017-04-20

申请号：US14887287

申请日：2015-10-19

Applicant: Novatek Microelectronics Corp.

Inventor： Min-Hung Hu ,  Chiu-Huang Huang ,  Chen-Tsung Wu ,  Juin-Wei Huang ,  Pin-Han Su

IPC: G05F1/575

CPC classification number: G05F1/575 ,  G05F1/565 ,  G05F1/59

Abstract: A voltage regulator including a voltage amplifier, a first output-stage, an AC-pass filter, a current amplifier, a second output-stage and a gain circuit is provided. Output terminals of the first and the second output-stages jointly provide the output voltage of the voltage regulator. Two input terminals of the voltage amplifier respectively receive a reference voltage and the output voltage. An input terminal of the first output-stage is coupled to an output terminal of the voltage amplifier. Two input terminals of the current amplifier respectively receive a reference current and the AC component of the output voltage. An input terminal of the second output-stage is coupled to an output terminal of the current amplifier. An input terminal of the gain circuit is coupled to the output terminal of the voltage amplifier. An output terminal of the gain circuit is coupled to the input terminal of the second output-stage.

公开(公告)号：US09971370B2

公开(公告)日：2018-05-15

申请号：US14887287

申请日：2015-10-19

Applicant: Novatek Microelectronics Corp.

Inventor： Min-Hung Hu ,  Chiu-Huang Huang ,  Chen-Tsung Wu ,  Juin-Wei Huang ,  Pin-Han Su

IPC: G05F1/575 ,  G05F1/565 ,  G05F1/59

CPC classification number: G05F1/575 ,  G05F1/565 ,  G05F1/59

Abstract: A voltage regulator including a voltage amplifier, a first output-stage, an AC-pass filter, a current amplifier, a second output-stage and a gain circuit is provided. Output terminals of the first and the second output-stages jointly provide the output voltage of the voltage regulator. Two input terminals of the voltage amplifier respectively receive a reference voltage and the output voltage. An input terminal of the first output-stage is coupled to an output terminal of the voltage amplifier. Two input terminals of the current amplifier respectively receive a reference current and the AC component of the output voltage. An input terminal of the second output-stage is coupled to an output terminal of the current amplifier. An input terminal of the gain circuit is coupled to the output terminal of the voltage amplifier. An output terminal of the gain circuit is coupled to the input terminal of the second output-stage.