高频开关电源的电磁干扰分析和电磁兼容措施

EMI Analysis and EMC Measures of High-frequency SMPS

高频开关电源具有体积小、精度高的特点,得到广泛应用。但实际使用中高频开关电源会产生电磁干扰和辐射,对工作环境中的其它设备造成不良影响。因此,必须对高频开关电源进行相应的电磁兼容处理,以确保高频开关电源在电磁环境中能够正常使用,且不会对其它设备产生干扰。

High-frequency switching mode power supply has been widely used due to its small size and high accuracy.However,in actual use,high-frequency switching mode power supply will produce electromagnetic interference and radiation,which impose adverse impact on other devices in the working environment.Therefore,EMC measures should be applied to high-frequency switching mode power supply to ensure normal operation of itself and other devices.