功耗问题正日益变成VLSI系统实现的一个限制因素。对便携式应用来说，其主要原因在于电池寿命，对固定应用则在于最高工作温度。由于电子系统设计的复杂度在日益提高，导致系统的功耗得到其主要功耗成分。其次，以该主要功耗成分数学表达式为依据，突出实现SoC低功耗设计的各种级别层次的不同方法。-VLSI power problems are increasingly becoming a limiting factor in system implementation. For portable applications, mainly due to battery life, for fixed applications lies in the maximum operating temperature. Because of the complexity of electronic system design in an increasingly improved, leading to system power consumption to be its main power components. Secondly, the main power components of the mathematical expression based on SoC highlight the low-power design to achieve a variety of levels of levels of different ways.