开关电源的电磁干扰及噪声抑制方法

The Restrain Method of EMI and Noise of Switching Mode Power Supply

在实际应用中,开关电源不可避免的要产生噪声和电磁干扰。这是一个不容忽视的问题,也是非常关键的问题,它影响到设备的精度,甚至阻碍电源的发展。文中通过开关电源所处的环境,分析了噪声以及电磁干扰产生的原因,并且有针对性的讨论了开关电源中噪声和电磁干扰的几种抑制方法。

Switching mode power supply is developing fast in various field. In the apply of swithing power, noise issued from power and electromagnetic interference are not neglected. In this paper, the reason of the noise is the analysed. And the method of how to hold down the noise and electromagnetic is discussed.