公开(公告)号：US20160349776A1

公开(公告)日：2016-12-01

申请号：US14969103

申请日：2015-12-15

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Antonino CONTE ,  Carmelo PAOLINO

IPC: G05F1/575 ,  H02M3/07

CPC classification number: G05F1/575 ,  G05F1/56 ,  H02M3/07 ,  H03F1/34 ,  H03F1/42 ,  H03F3/45

Abstract: A voltage-regulator device includes an error-amplifier stage configured to receive a first reference voltage and a feedback voltage, an output amplifier stage coupled to the error-amplifier stage and configured to generate an output voltage related to the first reference voltage by an amplification factor, and a feedback stage configured to generate the feedback voltage. A compensation stage is configured to implement a second feedback loop, and cause, in response to a variation of the output voltage, a corresponding variation of a first biasing voltage for the output amplifier stage. The compensation stage includes a coupling-capacitor element coupled between the output amplifier stage and a first internal node, and a driving module coupled between the first internal node, and the output amplifier stage and configured to generate a compensation voltage for driving the output amplifier stage.

Abstract translation: 电压调节器装置包括被配置为接收第一参考电压和反馈电压的误差放大器级，耦合到误差放大器级并被配置为通过放大产生与第一参考电压相关的输出电压的输出放大器级 因子和被配置为产生反馈电压的反馈级。 补偿级被配置为实现第二反馈回路，并且响应于输出电压的变化，引起输出放大器级的第一偏置电压的相应变化。 补偿级包括耦合电容器元件，耦合在输出放大器级和第一内部节点之间，驱动模块耦合在第一内部节点和输出放大器级之间，并被配置为产生用于驱动输出放大器级的补偿电压 。