基于FPGA的DO/DO变换器EMI抑制研究 |
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引用本文: | 李瑞娟.基于FPGA的DO/DO变换器EMI抑制研究[J].大众科技,2013(10):72-74. |
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作者姓名: | 李瑞娟 |
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作者单位: | 柳州职业技术学院,广西柳州545006 |
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基金项目: | 2012年广西教育厅科研课题“高性能函数信号发生器模块研制”(201204LX582);柳州职业技术学院质量工程项目“印刷电路板的设计与制作”(2011-A023). |
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摘 要: | 通过DC/DC开关电源电磁辐射产生的原因,研究其辐射强度与开关摆率的一般关系,设计了基于FPGA的摆率可控的电源方案。实验表明,该方案能有效降低DC/DC电源的EMI辐射,与传统设计方案相比,该方法对高频噪音的抑制能力更好。
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关 键 词: | 开关电源 EMI 电磁兼容 噪声 |
Study on inhibition of DC/DC EMI converter based on FPGA |
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Abstract: | Through the DC/DC switching power supply electromagnetic radiation, and studies the general relation between the radiation intensity and the switch slew rate, design the swing power scheme of controUable rate based on FPGA. Experiments show that, this scheme can effectively reduce the EMI radiation of DC/DC power, compared with the traditional design scheme, the method of high frequency noise suppression ability better. |
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Keywords: | switching power supply EMI electromagnetic compatibility noise |
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