myatham
Member level 3
Hi,
What should be the minimum value that should be used for common mode choke at power input. How we calculate this value. In some designs I found that designer used 1mH inuctor at current rating of 20A. In my present case, i have to design a filter at input. My input path should support 1000W@-48V. I could not find high current rated inductor with 1mH inductance. Please suggest me if i go with common mode choke with low inductance value how much it will effect the filtering (EMI) performance. And also for the DE filter, there is an inductor (4.7uH) in series which is also not available at 30A. How to chose these values. I completely stuck up with this issue. Please help me...:sad::-(
What should be the minimum value that should be used for common mode choke at power input. How we calculate this value. In some designs I found that designer used 1mH inuctor at current rating of 20A. In my present case, i have to design a filter at input. My input path should support 1000W@-48V. I could not find high current rated inductor with 1mH inductance. Please suggest me if i go with common mode choke with low inductance value how much it will effect the filtering (EMI) performance. And also for the DE filter, there is an inductor (4.7uH) in series which is also not available at 30A. How to chose these values. I completely stuck up with this issue. Please help me...:sad::-(