Invention Grant
US08624568B2 Low noise voltage regulator and method with fast settling and low-power consumption
有权
低噪声稳压器和方法,具有快速稳定和低功耗
- Patent Title: Low noise voltage regulator and method with fast settling and low-power consumption
- Patent Title (中): 低噪声稳压器和方法,具有快速稳定和低功耗
-
Application No.: US13200761Application Date: 2011-09-30
-
Publication No.: US08624568B2Publication Date: 2014-01-07
- Inventor: Vadim V. Ivanov , Harish Venkataraman
- Applicant: Vadim V. Ivanov , Harish Venkataraman
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Alan A. R. Cooper; W. James Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G05F1/00
- IPC: G05F1/00

Abstract:
A voltage regulator controls a regulated output voltage (Vout) by feeding it back to a differential input stage (13) receiving a reference voltage (Vref) and applying an output (3) to a control electrode of a follower transistor (M4) that is coupled to an output stage (15) which generates the output voltage (Vout). The output stage operates pull-up (M7B) and pull-down (M5B) transistors in response to a signal (6A) produced by the follower transistor (M4) during normal regulation operation, and provides fast settling of the output voltage by turning on a transient pull-up transistor (M7A) or transient pull-down transistor (M5A) in response to the signal (6A) produced by the follower transistor (M4) during a fast increasing or decreasing transition, respectively, of the load current (IL). A filtering resistor (RFLT) is coupled between the output voltage and a common electrode of the transient pull-up and pull down transistors.
Public/Granted literature
- US20130082671A1 Low noise voltage regulator and method with fast settling and low-power consumption Public/Granted day:2013-04-04
Information query
IPC分类: