公开(公告)号：US20160357206A1

公开(公告)日：2016-12-08

申请号：US15244289

申请日：2016-08-23

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Yong Feng Liu

IPC: G05F1/575

CPC classification number: G05F1/575 ,  G05F1/565 ,  G05F1/59 ,  G05F3/30

Abstract: A voltage regulator includes a feedback regulation loop and a drive transistor configured to source current to a regulated output. A transient recovery circuit is coupled to the voltage regulator circuit and includes a first transistor coupled to source current into a control terminal of the drive transistor, wherein the source current is in addition to current sourced in response to operation of the feedback regulation loop. The first transistor is selectively actuated in response to a drop in voltage at the regulated output. The transient recovery circuit further includes a second transistor coupled to sink current from the regulated output. The sink current has a first non-zero magnitude in the quiescent operating mode of the regulator circuit. In response to an increase in voltage at the regulated output, the operation of the second transistor is modified to increase the sink current to a second, greater, non-zero magnitude.

公开(公告)号：US09454166B2

公开(公告)日：2016-09-27

申请号：US14543294

申请日：2014-11-17

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Yong Feng Liu

IPC: G06F1/00 ,  G05F1/565 ,  G05F1/575 ,  G05F1/59 ,  G05F3/30

CPC classification number: G05F1/575 ,  G05F1/565 ,  G05F1/59 ,  G05F3/30

Abstract: A voltage regulator includes a feedback regulation loop and a drive transistor configured to source current to a regulated output. A transient recovery circuit is coupled to the voltage regulator circuit and includes a first transistor coupled to source current into a control terminal of the drive transistor, wherein the source current is in addition to current sourced in response to operation of the feedback regulation loop. The first transistor is selectively actuated in response to a drop in voltage at the regulated output. The transient recovery circuit further includes a second transistor coupled to sink current from the regulated output. The sink current has a first non-zero magnitude in the quiescent operating mode of the regulator circuit. In response to an increase in voltage at the regulated output, the operation of the second transistor is modified to increase the sink current to a second, greater, non-zero magnitude.

Abstract translation: 电压调节器包括反馈调节环路和驱动晶体管，其被配置为将电流输出到调节输出端。 瞬态恢复电路耦合到电压调节器电路，并且包括耦合到源极电流到驱动晶体管的控制端的第一晶体管，其中源电流除了响应于反馈调节环的操作而产生的电流之外。 第一晶体管响应于调节输出处的电压下降而选择性地致动。 瞬态恢复电路还包括耦合到从调节输出吸收电流的第二晶体管。 灌电流在调节器电路的静态工作模式下具有第一个非零幅值。 响应于调节输出处的电压增加，第二晶体管的操作被修改以将吸收电流增加到第二，更大，非零的幅度。