Selection factors of common mode inductors

Selection factors of common mode inductors   Generally speaking, the larger the common-mode impedance, the better. When choosing a common-mode inductor, it is mainly based on the impedance frequency curve. At the same time, it is necessary to consider the impact of differential-mode impedance on the signal. And pay attention to the following points: 1. Package volume: Common-mode inductors are plug-ins and patches, and of course, they are also integrated. When choosing, you should choose according to the actual circuit. If the plug-in cannot be installed, you can only use the patch. 2. Impedance characteristics are the main considerations. Generally, when choosing, pay special attention to the frequency band required for filtering. You need to read the common-mode inductor specification, mainly the impedance frequency curve. Generally, the larger the common-mode impedance, the better. 3. Leakage inductance size: Due to problems such as the common-mode inductor processing tech…