公开(公告)号：US09134743B2

公开(公告)日：2015-09-15

申请号：US13459817

申请日：2012-04-30

申请人： Glovanni Bisson ,  Marco Flaibani ,  Marco Piselli

发明人： Glovanni Bisson ,  Marco Flaibani ,  Marco Piselli

IPC分类号： G05F1/56 ,  G05F1/575

CPC分类号： G05F1/575

摘要： A low-dropout voltage regulator includes a power transistor configured to receive an input voltage and to provide a regulated output voltage at an output voltage node. The power transistor includes a control electrode configured to receive a driver signal. A reference circuit is configured to generate a reference voltage. A feedback network is coupled to the power transistor and is configured to provide a first feedback signal and a second feedback signal. The first feedback signal represents the output voltage and the second feedback signal represents an output voltage gradient. An error amplifier is configured to receive the reference voltage and the first feedback signal representing the output voltage. The error amplifier is configured to generate the driver signal dependent on the reference voltage and the first feedback signal. The error amplifier includes an output stage that is biased with a bias current responsive to the second feedback signal.

摘要翻译： 低压差稳压器包括被配置为接收输入电压并且在输出电压节点处提供稳定的输出电压的功率晶体管。 功率晶体管包括被配置为接收驱动器信号的控制电极。 参考电路被配置为产生参考电压。 反馈网络耦合到功率晶体管，并且被配置为提供第一反馈信号和第二反馈信号。 第一反馈信号表示输出电压，第二反馈信号表示输出电压梯度。 误差放大器被配置为接收参考电压和表示输出电压的第一反馈信号。 误差放大器被配置为根据参考电压和第一反馈信号产生驱动器信号。 误差放大器包括响应于第二反馈信号利用偏置电流偏置的输出级。