Title
Dynamic Slew Enhancement Technique For Improving Transient Response In An Adaptively Biased Low-Dropout Regulator
Abstract
This brief presents a dynamic slew enhancement technique for improving the transient response in an adaptively biased low-dropout regulator. This is done by introducing FAST and SLOW paths in an adaptive bias loop. The FAST path injects a quick momentary current during a low-to-high load transient, whereas the SLOW path keeps the current large during a high-to-low load step. The dynamic current shoots up to quite a high level as it is combined with adaptive biasing. When the proposed technique is implemented in the 0.18-mu m CMOS technology, the experimental results show the effective reduction in the undershoot (67%) and the overshoot (66.7%) while maintaining a low quiescent current of 1.1 mu A. The settling times during 0-50-mA and 50-0-mA load transients are improved by 74% and 99.9%, respectively.
Year
DOI
Venue
2015
10.1109/TCSII.2015.2415311
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
Keywords
Field
DocType
Current mirror, gain enhancement, low-dropout regulator, low quiescent current, operational transconductance amplifier
Transient response,Logic gate,Control theory,Adaptive bias,Overshoot (signal),Electronic engineering,CMOS,Low-dropout regulator,Fast path,Mathematics,Biasing
Journal
Volume
Issue
ISSN
62
7
1549-7747
Citations 
PageRank 
References 
1
0.36
6
Authors
2
Name
Order
Citations
PageRank
Ashis Maity1174.46
Amit Patra29725.22