For the Buck-boost power converter in the figure below, based on the EMI knowledge you learned in the class, please fini

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For The Buck Boost Power Converter In The Figure Below Based On The Emi Knowledge You Learned In The Class Please Fini 1 (92.7 KiB) Viewed 29 times

For the Buck-boost power converter in the figure below, based on the EMI knowledge you learned in the class, please finish the problems below. Vsw_ Ala LISNs + 4 Aco 5uH x 2 Vi Ci Co v. R 0.1uF x 2 + 1uF X 2 5012 X 2 To 1. Please draw the DM EMI current IDM and CM EMI current ICM in the figure. 2. Please develop an EMI circuit model for DM EMI noise and an EMI circuit model for CM EMI noise. 3. Please choose an optimal EMI filter topology inserted between LISNs and Ci to reduce both DM and CM EMI noise based on what you learned in the class. 4. Please identify the voltage nodes which are the strong near electric field sources and the current loops which are the strong near magnetic field sources. 5. To reduce the near electric field and near magnetic field emitted from the power converter, a metal box is used as a shield for the whole converter. How the metal box should be grounded? 6. If the metal box can be either made from copper or from steel, which one you are going to choose? Please explain the reason.