TelecomPowerTechnology·4·Sep.10,2023,Vol.40No.172023年9月10日第40卷第17期设计应用技术DOI：10.19399/j.cnki.tpt.2023.17.002开关电源PCB板的EMI抑制和抗干扰设计伍颖，唐毓豪（中国电子科技集团公司第三十四研究所，广西桂林541000）摘要：开关电源常见于各种通信、控制等电子设备，广泛应用于军事、工业、医疗等领域，具有高效、轻巧以及可靠的特点。随着电子技术的快速发展，开关电源也在不断发展，行业对于电源性能的要求也越来越高，开关电源趋于高频化，但同时会产生一系列的电磁干扰（ElectromagneticInterference，EMI）问题。这些干扰可能对设备的正常运行、周围电子设备的性能稳定性以及电磁兼容性产生不利影响。基于此，简单讨论开关电源印制电路板（PrintedCircuitBoard，PCB）的EMI抑制和抗干扰设计意义，深入探讨设计要点，以供参考。关键词：开关电源；电磁干扰（EMI）；印制电路板（PCB）；辐射；抗干扰设计EMIInhibitionandAnti-InterferenceDesignStudyofSwitchingPowerSupplyPCBBoardWUYing,TANGYuhao(The34thResearchInstituteofChinaElectronicsTechnologyGroupCorporation,Guilin541000,China)Abstract:Switchpowersupplyiscommoninavarietyofcommunication,controlandotherelectronicequipment,widelyusedinmilitary,industrial,medicalandotherfields.Switchpowersupplyhasthecharacteristicsofhighefficiency,lightandreliable,withtherapiddevelopmentofelectronictechnology,switchingpowersupplyisalsoconstantlydeveloping,theindustryforthepowerperformancerequirementsarebecominghigherandhigher,switchingpowersupplymoreandmorehighfrequency,butalsowillproduceaseriesofElectromagneticInterference(EMI)problems.Thesedisturbancesmayadverselyaffectthenormaloperationoftheequipment,theperformancestabilityofthesurroundingelectronicequipment,andtheelectromagneticcompatibility.Basedonthis,thispaperbrieflydiscussesthedesignsignificanceofEMIsuppressionandanti-interferenceofPrintedCircuitBoard(PCB)boardofswitchingpowersupply,anddiscussesthedesignpointsforreference.Keywords:switchpowersupply;ElectromagneticInterference(EMI);PrintedCircuitBoard(PCB);radiation;anti-interferencedesign0引言为提高开关电源的电磁干扰（ElectromagneticInterference，EMI）抑制和抗干扰能...
