Suppressing Output Overshoot Voltage Technique with 47.1mW/mu s Power-Recycling Rate and 93% Peak Efficiency DC-DC Converter for Multi-core Processors

Meng Wei Chien, Wen Hau Yang, Ying Wei Chou, Hsin Chieh Chen, Wei Chung Chen, Ke-Horng Chen, Chin-Long Wey, Shin Chi Lai, Ying Hsi Lin, Chao Cheng Lee, Jian Ru Lin, Tsung-Yen Tsai, Hsin Yu Luo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Conversion efficiency degrades in case of heavy-to-light loading change since state-of-art overshoot reduction techniques simply dissipate redundant energy at the output of buck DC-DC converter. Thus, the proposed dual-mode ripple-recovered compensator (D-RRC) and multi-phase suppressing output overshoot voltage (MP-SOOV) technique uses 33nH bondwire inductance to recycle energy and provides 47.1mW/mu s ultra-fast power-recycling rate to suppress overshoot voltage from 507mV to 95mV with 81.3% improvement when load changes from 1.7A to 0.3A. Experimental results show 93% high efficiency and high-speed operation with only tens of nano second on-time period.
Original languageEnglish
Title of host publication 41st European Solid-State Circuits Conference (ESSCIRC)
PublisherIEEE
Pages188-191
Number of pages4
StatePublished - 2015

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