频率抖动技术在开关电源EMC设计中的应用 |
| |
引用本文: | 刘志刚,汪旭东,武韩,汪小志.频率抖动技术在开关电源EMC设计中的应用[J].安全与电磁兼容,2008(1):47-49. |
| |
作者姓名: | 刘志刚 汪旭东 武韩 汪小志 |
| |
作者单位: | 河南理工大学电气工程与自动化学院;国家电子计算机质量监督检验中心 |
| |
摘 要: | 开关电源中的大电容在开关合闸瞬间产生较大的充电电流。在研究EMI测试仪器测试原理的基础上,提出频率抗干扰技术,并结合某信息类产品的开关电源测试的频谱图,分析了频率抖动技术如何减小EMI以及该技术本身可能带来的骚扰问题和解决方案。
|
关 键 词: | 频率抖动 开关电源 EMC 传导骚扰 |
Application of Frequency Jitter Technique on the EMC Design for Switching Mode Power Supply |
| |
Abstract: | The moment Switching Mode Power Supply switches on the large capacitor generates comparatively large charge current. Then Frequency Jitter technique was issued based on the theory of frequency jitter anti-interference and the test principle of EM! test instrument. Finally, according to the frequency spectrum diagram of a Switching Mode Power Supply on a FCR, analyzed how to minish EMI effect by Frequency Jitter technique, which also brought in new disturbance by itself. |
| |
Keywords: | frequency jitter switching mode power supply EMC conduct disturbance |
本文献已被 维普 万方数据 等数据库收录! |