开关电源纹波与噪声的抑制和测量方法  

Suppression and Measurement of Ripple and Noise in Switching Power Supply

作　　者：全建波 陆强 QUAN Jianbo;LU Qiang(Xi’an Navigation Technology Research Institute,Xi'an 710068,China;Zhongdian Kerui(Xi’an)Technology Service Co.,Ltd.,Xi'an 710068,China)

机构地区：[1]西安导航技术研究所,陕西西安710068 [2]中电科瑞测(西安)科技服务有限公司,陕西西安710068

出　　处：《电声技术》2022年第10期118-120,共3页Audio Engineering

摘　　要：开关电源在切换的过程中,会产生浪涌电压、电流、纹波及噪声问题。较大的纹波及噪声会对相关电子设备带来极大的干扰。对此,就开关电源纹波与噪声产生的原因、抑制方法、防护及测量等进行探讨,以期在模块设计、产品应用过程中采取合理的方式及方法,合理选用电源滤波器,充分发挥开关电源的诸多优点,最大限度地抑制其缺点。In the switching process of switching power supply, there will be surge voltage, current, ripple and noise problems. Large ripple and noise will cause great interference to relevant electronic equipment. In this regard, this paper discusses the causes,suppression methods, protection and measurement of switching power supply ripple and noise, with a view to adopting reasonable methods and methods in the process of module design and product application, reasonably selecting power filter, giving full play to many advantages and disadvantages of switching power supply, and minimizing its disadvantages.

关 键 词：纹波 噪声 共模 差模 插入损耗 

分 类 号：TN912.2[电子电信—通信与信息系统]