標題: Sub-1 V Input Single-Inductor Dual-Output (SIDO) DC-DC Converter With Adaptive Load-Tracking Control (ALTC) for Single-Cell-Powered Systems
作者: Huang, Ming-Hsin
Tsai, Yu-Nong
Chen, Ke-Horng
電機工程學系
電控工程研究所
Department of Electrical and Computer Engineering
Institute of Electrical and Control Engineering
關鍵字: Adaptive load-tracking control (ALTC) technique;dc-dc converter;single-inductor dual-output (SIDO) self-bias current source (SBCS) circuit;single-cell-powered systems;sub-1 V input
公開日期: 1-七月-2010
摘要: 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 mu m 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.
URI: http://dx.doi.org/10.1109/TPEL.2010.2042073
http://hdl.handle.net/11536/5209
ISSN: 0885-8993
DOI: 10.1109/TPEL.2010.2042073
期刊: IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume: 25
Issue: 7
起始頁: 1713
結束頁: 1724
顯示於類別:期刊論文


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