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Title: Triple boundary multiphase with predictive interleaving technique for switched capacitor DC-DC converter regulation
Authors: Xiao, Zhekai
Kok, Chiang Liang
Siek, Liter
Issue Date: 2014
Source: Xiao, Z., Kok, C. L., & Siek, L. (2014). Triple boundary multiphase with predictive interleaving technique for switched capacitor DC-DC converter regulation. 2014 14th International Symposium on Integrated Circuits (ISIC), 17-20.
Abstract: In this paper, we propose a new technique to regulate multi-phase interleaved switched-capacitor DC-DC converters. Traditionally, SC converters are either regulated by modulating the switching frequencies directly through a voltage-controlled-oscillator or by using hysteretic control where separate control loops are used for each converter core. Achieving fast regulation by modulating VCO is difficult because it requires a high speed error amplifier and proper loop compensation. Conventional hysteretic controller achieves fast regulation, but it uses N comparators or one shared comparator that operates at N times the single phase switching frequency, where N is the level of interleaving. The proposed technique avoids these problems by using triple boundary hysteretic control, where one comparator is used for defining the reference voltage, and the other two comparators enable coarse/fine operation to achieve both fast recovery and tight regulation.
DOI: 10.1109/ISICIR.2014.7029473
Rights: © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
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