Title :
A current-limiter-based soft-start scheme for linear and low-dropout voltage regulators
Author :
Al-Shyoukh, Mohammad ; Lee, Hoi
Author_Institution :
Univ. of Texas at Dallas, Richardson, TX, USA
fDate :
May 30 2010-June 2 2010
Abstract :
A soft-start strategy for linear and low-dropout voltage regulators based on a successive current-limiting scheme during the startup phase is presented. The proposed current-limiting scheme incorporates a digitally-programmable mechanism for precisely controlling the current profile of the pass device during the startup transient. The proposed scheme is compact, as it requires no external components and has minimal transistor overhead, thereby minimizing the implementation area and cost of the overall regulator. The proposed soft-start circuit has been developed on a standard 0.35-μm CMOS technology as part of a USB-powered linear regulator for portable power applications.
Keywords :
CMOS integrated circuits; current limiters; programmable circuits; voltage regulators; CMOS technology; USB-powered linear regulator; current profile control; current-limiter-based soft-start scheme; digital programmable mechanism; linear voltage regulators; low-dropout voltage regulators; minimal transistor overhead; pass device; size 0.35 mum; startup transient; successive current-limiting scheme; Aggregates; CMOS technology; Circuits; Costs; Energy management; Rails; Regulators; Standards development; Universal Serial Bus; Voltage;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537023
