| 开关电源电磁干扰抑制的频率控制方法比较 |
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| 引用本文： | 李意,尹华杰. 开关电源电磁干扰抑制的频率控制方法比较[J]. 电气应用, 2004, 0(4): 46-49 |
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| 作者姓名： | 李意 尹华杰 |
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| 作者单位： | 华南理工大学电力学院雅达实验室,510640;华南理工大学电力学院雅达实验室,510640 |
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| 摘 要： | 在开关电源开关器件的开关过程中 ,寄生器件 (如寄生电容、寄生电感等 )中能量的高频变化会产生大量的电磁干扰。除了采用无源缓冲或滤波电路的干扰抑制方法外 ,实际中还常利用控制开关频率的有源方法来抑制干扰。在此介绍和比较了随机频率法和调制频率法这两种常用的干扰抑制方法
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| 关 键 词： | 电磁干扰 随机频率法 调制频率法 |
| 修稿时间： | 2003-07-30 |
Comparison of Frequency Control Methods for EMI Suppression in SMPS |
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| Li Yi. Comparison of Frequency Control Methods for EMI Suppression in SMPS[J]. Electrotechnical Application, 2004, 0(4): 46-49 |
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| Authors: | Li Yi |
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| Affiliation: | South China University of Technology |
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| Abstract: | Most switching mode power supplies (SMPS) are working at high frequency,and the transient change of energy in parasitic components (parasitic capacitor or inductor) brings serious electromagnetic interference (EMI).Beside the passive snubbers or filters, in our design,several frequency controlling methods are also used for EMI suppression.The two methods:Randomized Frequency control and Modulated Frequency control are introduced and compared. |
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| Keywords: | EMI randomized frequency modulated frequency |
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