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Noise Mitigation Analysis of a π-filter foran Automotive Control Module摘要:在汽车13.8 V直流电源网络中经常使用EMI滤波器抑制高频噪声,但这种滤波器往往由于寄生参数的影响性能难以预测。通过对优化的π型滤波器以及铁氧体元件的频响特性进行SPICE仿真,找出了滤波器的最佳实施方案。关键词:π型滤波器;表贴型铁氧体;寄生参数;开关
Abstract: EMI filters are often used to suppress high-frequency noise in automotive 13.8 V DC power networks, but such filters are often difficult to predict due to the parasitic behavior. Through the optimization of the π-type filter and the frequency response characteristics of ferrite components SPICE simulation found the best filter implementation. Keywords: π-type filter; SMD ferrite; parasitic parameters; switch