Title :
Single-inductor dual buck-boost output (SIDBBO) converter with adaptive current control mode (ACCM) and adaptive body switch (ABS) for compact size and long battery life in portable devices
Author :
Huang, Ming-Hsin ; Chen, Ke-Horng
Author_Institution :
Department of Electrical and Control Engineering, National Chiao Tung University, Hsinchu, Taiwan R.O.C.
Abstract :
A single-inductor dual buck-boost output (SIDBBO) converter is proposed to provide compact size and long battery life to portable devices. The proposed adaptive current control mode (ACCM) reduces cross-regulation and power losses since ACCM adaptively controls inductor current for output regulating. Moreover, adaptive body switch (ABS) addresses potential leakage and latch-up, which occur when N-well bias vary with supply voltage. Owing to ACCM and ABS, efficiency achieves 92% and rises from 65% to 88% at heavy and light loads.
Keywords :
Adaptive control; Batteries; Control engineering; Current control; Electric current control; Inductors; Programmable control; Switches; Switching converters; Voltage; N-well bias; adaptive body switch (ABS); adaptive current control mode (ACCM); potential leakage; single-inductor dual buck-boost output (SIDBBO) converter;
Conference_Titel :
VLSI Circuits, 2009 Symposium on
Conference_Location :
Kyoto, Japan
Print_ISBN :
978-1-4244-3307-0
Electronic_ISBN :
978-4-86348-001-8
