Modeling and analysis of digital linear dropout regulators with adaptive control for high efficiency under wide dynamic range digital loads

Author

Gangopadhyay, Samantak ; Youngtak Lee ; Bin Nasir, Saad ; Raychowdhury, Arijit

fYear

2014

fDate

24-28 March 2014

Firstpage

1

Lastpage

6

Abstract

Discrete time digital linear regulators, including low dropout regulators (LDOs) have become competitive in muti-Vcc digital systems for fine-grained spatio-temporal voltage regulation and distribution. However, wide dynamic current range of the digital load circuits poses serious problems in maintaining stability and high efficiency at all corners. In this paper we present a control model for discrete time LDOs and demonstrate how online adaptive control can be employed for consistent performance and high efficiency across the load current range.

Keywords

adaptive control; circuit stability; digital circuits; digital control; discrete time systems; electric current control; linear systems; load regulation; voltage control; LDO; adaptive control; discrete time digital linear dropout regulator; fine-grained spatiotemporal voltage distribution; fine-grained spatiotemporal voltage regulation; low dropout regulator; mutiVcc digital system; stability; wide dynamic range digital load; Adaptive control; Digital control; Dynamic range; Load modeling; Regulators; Time-frequency analysis; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Design, Automation and Test in Europe Conference and Exhibition (DATE), 2014

Conference_Location

Dresden

Type

conf

DOI

10.7873/DATE.2014.160

Filename

6800361