为了降低便携式终端系统的功耗、延长电池的使用寿命、减少散热量,本文设计了一种基于ARM的便携式终端电源管理系统。设计了电源部分硬件电路,分析了系统工作状态下的四种工作模式,重点分析了睡眠模式下的电源管理策略,并给出了该模式下的电源管理软件设计。功耗测试表明,系统满足设计需求。
Aiming to lower the power consumption of portable terminal power management, thus to extend the battery life and to reduce the heat dissipation, this paper designs a power management system for portable terminals based on ARM. The hardware circuit is designed and four operation modes of the system are analysed, with emphasis on studies of the power management strategy in sleep mode, while presenting the power management software design at this mode. Power consumption test shows that the system met the design requirements well.