This article discusses centralized and distributed PMU architectures,the related DVFS technology. The future trends of PMU technology for portalble devices are also analyzed. 如今用于便携产品设计的许多最新SoC解决方案需要能提供多种电压的电源，这些电源可以与功能是否激活同步开、关这些供电电压。它们还必须能够高效地进行DC/