94% Performance improvement by time-shift control (TSC) technique in cloud computing voltage regulator module (VRM)

Che Hao Meng, Yi Ping Su, Yu Ping Huang, Yu Huei Lee, Ke-Horng Chen

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

Abstract

The time-shift control (TSC) technique for voltage regulator module (VRM) is proposed to achieve high performance power supply for servers in cloud computing. Four power stages are adopted to provide high current driving capability and low output ripple. Besides, the power request, which includes the number of active phases and voltage identification (VID), is acknowledged by servers for high driving capability during high throughput and high efficiency during standby mode. Furthermore, to equally distribute the current in each phase, the proposed TSC technique improves the current balance performance and solves the stability problem. In the scale-down clouding computing prototype, the efficiency can be kept higher than 90% over a wide load current range of 2 A. Besides, the performance and operating frequency of the servers in stable operation are not limited by the VRM with the TSC.

Original languageEnglish
Title of host publication2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
Pages909-912
Number of pages4
DOIs
StatePublished - 9 Sep 2013
Event2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013 - Beijing, China
Duration: 19 May 201323 May 2013

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Conference

Conference2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
CountryChina
CityBeijing
Period19/05/1323/05/13

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