Sub-1V input single-inductor dual-output (SIDO) DC-DC converter with adaptive load-tracking control (ALTC) for single-cell-powered system

Ming Hsin Huang*, Yu Nong Tsai, Yu Huei Lee, Shih Jung Wang, Ke-Horng Chen, Ying Hsi Lin, Gin Kou Ma

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

In this paper, a sub-1V input single-inductor dual-output (SIDO) DC-DC converter with an adaptive load-tracking control (ALTC) technique is proposed for single-cell-powered portable devices. The ALTC technique adaptively and accurately adjusts storage charge in form of the inductor current according to actual load condition without wasting surplus charge and increasing cross-regulation through the use of minimized the number of switch and optimum current sequence. A current-mode ring oscillator with a self-bias current source (SBCS) circuit is proposed to replace conventional startup oscillator to produce a nearly constant system clock. The test chip was fabricated by TSMC 0.25 μm 2.5 V/5 V BCD process and experimental results show a high efficiency of 92 % and a cross-regulation smaller than 10 mV.

Original languageEnglish
Title of host publicationESSCIRC 2009 - Proceedings of the 35th European Solid-State Circuits Conference
Pages268-271
Number of pages4
DOIs
StatePublished - 1 Dec 2009
Event35th European Solid-State Circuits Conference, ESSCIRC 2009 - Athens, Greece
Duration: 14 Sep 200918 Sep 2009

Publication series

NameESSCIRC 2009 - Proceedings of the 35th European Solid-State Circuits Conference

Conference

Conference35th European Solid-State Circuits Conference, ESSCIRC 2009
CountryGreece
CityAthens
Period14/09/0918/09/09

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