XY.CN总线是一种低成本的、一点对多点的现场总线通信系统,该系统的优势之一是其无与伦比的节电优势,要发挥该优势,就要注意各部分的电源设计方法。总线电压在12～36V范围系统均能正常工作,对不同的应用可选用不同的工作电压,本文将全面论述其系统的电源设计原理及方法。1总线 The XY.CN bus is a low-cost, point-to-multipoint fieldbus communication system. One of the benefits of this system is its unparalleled power-saving benefits. To take advantage of this, attention should be paid to the power-supply design methodology for each part. Bus voltage in the 12 ~ 36V range of the system can work properly, for different applications can choose different operating voltage, this article will provide a comprehensive discussion of the system power supply design principles and methods. 1 bus