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An Ultra Fast Fixed Frequency Buck Converter with Maximum Charging Current Control and Adaptive Delay Compensation for DVS Applications

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3 Author(s)
Feng Su ; Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China, Email: sufeng@ece.ust.hk ; Wing-Hung Ki ; Chi-Ying Tsui

A buck converter with maximum charging current control in achieving high tracking speed is presented. An adaptive delay compensation scheme is employed to keep the switching frequency at 850 kHz within plusmn2.5% across the whole operation range. The integrated buck converter was fabricated using a 0.35 mum CMOS process and all functions are verified by extensive measurements.

Published in:

2007 IEEE Symposium on VLSI Circuits

Date of Conference:

14-16 June 2007