介绍了一种无线传感器网络节点的电源管理模块．该模块可以针对锂电池的宽电压输入进行DC／DC转换，采用同步降压一升压转换结构，实现额定电压输出．分析节点不同模块的工作特性，采用不同的微功耗同步降压-升压DC／DC转换器进行设计，并给出了具体的元器件选型方案．经实验测试和实际应用，该模块的转换效率可达85％以上，有效地提高电池的使用效率和节点能量利用率．特别是该模块符合便携式设备的需要，利于该模块与其他产品的结合，具有良好的通用性和扩展性．%This paper introduces a kind of wireless sensor network node of the power management mod- ule. This module can be used to the width of lithium battery voltage of input DC/DC conversion,by synchronization step-down-boost conversion structure to realise the rated voltage output. The paper analysis emplying characteristics of different modules node, uses the different micro-consumption electronic syn- chronous Buck-Boost DC/DC converter to design,and presents the specific components selection plan. The experimental testing and actual application proves that, this module of the conversion efficiency is for 85~ or more, effectively improving the efficiency in the use of the battery and the node energy utili- zation. Especially, the module meets the needs of the portable devices, contributes to the combination of the module and other products,thus enjoying good generality and expansibility.
展开▼
