標題: Power-Tracking Embedded Buck-Boost Converter With Fast Dynamic Voltage Scaling for the SoC System
作者: Lee, Yu-Huei
Huang, Shao-Chang
Wang, Shih-Wei
Wu, Wei-Chan
Huang, Ping-Ching
Ho, Hsin-Hsin
Lai, Yuan-Tai
Chen, Ke-Horng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: Buck-boost (BB) converter;dc-dc converter;dynamic voltage scaling (DVS);peak current control (PCC);power tracking;pulse skipping;system-on-a-chip (SoC);valley current control (VCC)
公開日期: 1-三月-2012
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 mu s, respectively, with a high switching frequency of 5 MHz.
URI: http://hdl.handle.net/11536/16366
ISSN: 0885-8993
期刊: IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume: 27
Issue: 3
結束頁: 1271
顯示於類別:期刊論文


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