公开(公告)号：US09582015B2

公开(公告)日：2017-02-28

申请号：US14188348

申请日：2014-02-24

Applicant: Seiko Instruments Inc.

Inventor： Tomomi Taniguchi

IPC: G05F1/575 ,  G05F1/56 ,  G05F3/26

CPC classification number: G05F1/56 ,  G05F1/575 ,  G05F3/262

Abstract: There is provided a voltage regulator that stably operates without using a large phase compensation capacitance. The voltage regulator has a voltage 3-stage amplifier circuit comprised of a differential amplifier circuit, a first source ground amplifier circuit provided with a phase compensation circuit, and a second source ground amplifier circuit, which serves as an output circuit. The voltage 3-stage amplifier circuit is provided, between the first source ground amplifier circuit and the second source ground amplifier circuit, with a phase compensation circuit that is effective for reducing the gains of the differential amplifier circuit and the first source ground amplifier circuit.

Abstract translation: 提供了一种电压调节器，可在不使用大相位补偿电容的情况下稳定工作。 电压调节器具有由差分放大电路，具有相位补偿电路的第一源极接地放大器电路和用作输出电路的第二源极接地放大器电路构成的电压3级放大电路。 在第一源极接地放大器电路和第二源极接地放大器电路之间提供电压三级放大器电路，其具有对于减小差分放大器电路和第一源极接地放大器电路的增益有效的相位补偿电路。