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随着电子器件的小型化和高集成化，PCB（printed circuit board）电源板面临越来越严重的电源完整性问题。电源完整性问题主要包括电压降增大和噪声干扰增强两大难题。优化电源总线法可降低电压降，但此方法不能有效隔离噪声。近年来研究人员使用 EBG （electromagnetic band-gap，电磁带隙）结构电路板来隔离高频噪声，但此方法不能解决电压降增大的问题。基于构形理论，在电源板内设计的蜘蛛网电源分配网络，给电源板各点供电，此网络连接类似于EBG结构的带隙结构组成蜘蛛网状电源板。通过仿真和测试，可以证明蜘蛛网状电源板具有电压降低，电流分布均匀，电流鲁棒性和噪声隔离效果良好等优势，有效地解决以上两点难题。“,”In this paper, a spider power tree design technique based on constructal theory is introduced for optimal direct current performance. The optimal configuration ratio, the optimal order, and the spider tree dimensions are obtained for optimal voltage drop and resistance. In the meantime, a spider PCB power plane based on the spider tree is developed for printed circuit board. The designed spider power plane example illustrates that the designed plane has multifunctions of low voltage drop, current contour robustness, equidistribution, compactness and effective noise isolation while maintaining a relatively simple design of geometry. The constraints are the total areas of the plane and the high conductivity paths. The degrees of freedom are configuration ratios and assembly number. High complexity is not necessarily the best solution and the optimal assembly level (complexity) is 12.