降低EMI和保持高效率D类放大器在便携式应用

摘要：D类放大器通常是非常有效的，使他们需要较长的电池寿命和低散热的便携式应用的理想人选。然而，电磁干扰（EMI）是一个问题，通常伴随着D类开关拓扑。活跃的排放限制减少辐射，使“滤波器”的操作，使设计人员能够创建小型，高效低EMI的便携式应用。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>AudioCircuits>APP5342Keywords:EMI,ClassD,Edgeratecontrol,portableapplication,highefficiency,activeemissionslimiting,electromagneticinterference,RFinterference,AELApr25,2012APPLICATIONNOTE5342ReduceEMIandMaintainHighEfficiencywithClassDAmplifiersinPortableApplicationsBy:TrangNguyen,BusinessManagerApr25,2012Abstract:ClassDamplifiersaretypicallyveryefficient,makingthemidealcandidatesforportableapplicationsthatrequirelongbatterylifeandlowthermaldissipation.However,electromagneticinterference(EMI)isanissuethatcommonlyacco