Title

New Insights On Multiphase Synchronous Buck Converter Design: A Comprehensive Consideration

Keywords

dynamic VID; efficiency; multiphase; transient performance

Abstract

This paper comprehensively discusses the multiphase power converter design and introduces new control schemes in dynamic operations, which are now used to supply the power for modern Multi-Core processor (MCP) and multiprocessor System-on-Chip (MPSoC). With the aggressive motivation to boost dynamic power efficiency, the design specification of the VR is pushing the physical limitation of the multiphase converter design and the component stress as well. In this paper, the operation modes and PWM drive interface to achieve phase shedding are first illustrated. Robust driver operation is ensured when exiting the tri-state for long time. Nonlinear control scheme is introduce to minimize the voltage excursion during load transient. CdV/dt compensation for removing the AVP effect and novel nonlinear control scheme for smooth transition are proposed for dealing with fast voltage positioning. For experimental verification, a 400 W six phase synchronous buck converter is implemented with the proposed schemes. © 2013 IEEE.

Publication Date

12-1-2013

Publication Title

IECON Proceedings (Industrial Electronics Conference)

Number of Pages

2447-2454

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/IECON.2013.6699515

Socpus ID

84893555701 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84893555701

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