NDLI: Sub-1 V Input Single-Inductor Dual-Output (SIDO) DC–DC Converter With Adaptive Load-Tracking Control (ALTC) for Single-Cell-Powered Systems

Content Provider	IEEE Xplore Digital Library
Author	Ming-Hsin Huang Yu-Nong Tsai Ke-Horng Chen
Copyright Year	1986
Abstract	In this paper, a sub-1 V input single-inductor dual-output (SIDO) dc-dc converter with an adaptive load-tracking control (ALTC) technology is proposed for single-cell-powered portable devices. Having a minimal number of switches and an optimum current sequence, the proposed ALTC technique adaptively and accurately adjusts storage energy in the form of inductor current according to the actual load condition, without wasting surplus charge and without increasing cross regulation. Moreover, a current-mode ring oscillator with a self-bias current source circuit, in place of the conventional start-up ring oscillator, is proposed to produce a nearly constant system clock for the requirement of sub-1 V start-up procedure. Because the proposed current-mode ring oscillator operates between the start-up process and steady state of the SIDO dc-dc converter, its simplified design efficiently addresses the high switching frequency losses at sub-1 V start-up procedure, reducing chip area and power consumption. The proposed sub-1 V input SIDO dc-dc converter was fabricated via Taiwan Semiconductor Manufacturing Company 0.25 μm 2.5 V/5 V Bipolar-CMOS-DMOS process, and the experimental results show high efficiency of 92% with a good cross regulation smaller than 10 mV.
Sponsorship	IEEE Power Electronics Society
Starting Page	1713
Ending Page	1724
Page Count	12
File Size	1591062
File Format	PDF
ISSN	08858993
Volume Number	25
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Programmable control Adaptive control Control systems DC-DC power converters Ring oscillators Switches Energy storage Inductors Circuits Clocks sub-1 V input Adaptive load-tracking control (ALTC) technique dc–dc converter single-inductor dual-output (SIDO) self-bias current source (SBCS) circuit single-cell-powered systems
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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