高频开关电源的干扰和抑制措施研究

电子科技大学毕业设计（论文）ABSTRACTIn this thesis,the development history of high-frequency switching power supplyand the harm of electromagnetic interference to daily life are expounded in connectionwith reality.According to the analysis of the electromagnetic interference source of theswitching power supply in the past,the electromagnetic interference can be suppressedby reducing the interference signal generated by the interference source,cutting off thepropagation path of the interference signal,and enhancing the anti-interference abilityof sensitive equipment.Based on this,this thesis consults the literature and owns itsown practice,and analyzes the causes and propagation paths of electromagneticinterference generated by switching power supplies from the two aspects of conductionand radiation,and analyzes the shortcomings of the existing suppression technology.Two aspects of the layout are proposed to improve the electromagnetic compatibility ofthe switching power supply,so as to better improve the stability of the switching powersupply and reduce the harm of electromagnetic interference.Keywords:high frequency switching power supply electromagnetic interferencesuppression