公开(公告)号：US20140361760A1

公开(公告)日：2014-12-11

申请号：US13912821

申请日：2013-06-07

Applicant: MediaTek Inc.

Inventor： Chien-Wei KUAN ,  Jyh-Pyng LAY ,  Chih-Ching YU ,  Yuh-Long YEH

IPC: G05F1/46

CPC classification number: G05F1/46

Abstract: A voltage regulation circuit is provided. The voltage regulation circuit regulates a level of a supply voltage provided by an automotive battery. The voltage regulation circuit includes a selector and an error amplifier. The selector receives a plurality of predetermined voltages and selects one of the plurality of predetermined voltages according to a control signal to serve as a first reference voltage. The error amplifier generates an error signal according to the first reference voltage and a feedback signal. The feedback signal is related to the supply voltage. The voltage regulation circuit regulates the level of the supply voltage according to the error signal.

Abstract translation: 提供电压调节电路。 电压调节电路调节由汽车电池提供的电源电压的电平。 电压调节电路包括选择器和误差放大器。 选择器接收多个预定电压，并根据控制信号选择多个预定电压中的一个作为第一参考电压。 误差放大器根据第一参考电压和反馈信号产生误差信号。 反馈信号与电源电压有关。 电压调节电路根据误差信号调节电源电压的电平。