Power-tracking embedded buck-boost converter with fast dynamic voltage scaling for the SoC system

Yu Huei Lee*, Shao Chang Huang, Shih Wei Wang, Wei Chan Wu, Ping Ching Huang, Hsin Hsin Ho, Yuan Tai Lai, Ke-Horng Chen

*Corresponding author for this work

研究成果: Article同行評審

61 引文 斯高帕斯(Scopus)

摘要

A power-tracking embedded buck-boost converter with a fast dynamic voltage scaling (F-DVS) function is proposed to power the system-on-a-chip (SoC) system. To meet the power request of the SoC for different operation functions, fast up/down-tracking is implemented to achieve the F-DVS function. Recycling energy is also derived to minimize power dissipation during the down-tracking period. In addition, the peak current control and valley current control methods are utilized in the buck and boost operations, respectively, to minimize the effect of switching noise in high switching operation for compact solution. Moreover, the self-tuning pulse skipping mechanism extends the effective duty cycle to achieve voltage regulation and improves efficiency when the input voltage is close to that of the output. Through F-DVS, the tracking speed from 3 to 2 V and vice versa are 15 and 20 s, respectively, with a high switching frequency of 5 MHz.

原文English
文章編號5672606
頁(從 - 到)1271-1282
頁數12
期刊IEEE Transactions on Power Electronics
27
發行號3
DOIs
出版狀態Published - 20 二月 2012

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