SoC处理器的电源管理系统设计.pdfVIP

34 16 2008 8 Vol.34 No.16 Computer Engineering August 2008 ·· 2008 A TP303 SoC ( 200233) SoC SoC PMU PMIC IC PMIC IC PMBus PMIC Power Management System Design for SoC Processor HE Yun-ling, QIN Juan, WANG Jia, NI Ming, CHAI Xiao-li (East-China Institute of Computer Technology, Shanghai 200233) AbstractThis paper studies the power management system design for the System-on-Chip(SoC) processor technology. The characteristic of the processor ’s Power Management Unit(PMU) is analyzed. According to its application demands, it discusses the design problems of Power Management IC(PMIC), which includes: the interior architecture of the power IC and its selection principle, the improvement of the digital PMIC in contrast with the traditional power IC, the application of a new power management bus called PMBus and a highly integrated PMIC. It analyzes the design of Dynamic Power Management(DPM), which is a module in the embedded operating system. Key wordsSystem-on-Chip(SoC); Power Management Unit(PMU); Power Management IC(PMIC); Low Dropout Regulator(LDO); switching regulator; digital power management (System-on-Chip, SoC)SoC (3)PMU SoC SoC PMU SoC 1 SoC PMU SoC VCC_CORE 1 SoC