Flat Wire Common Mode Inductors

Flat Wire Common Mode Inductors

Common mode inductors, also known as common mode chokes, are commonly used in switching power supplies for computers to filter common mode electromagnetic interference signals. In the board design, common mode inductors also play the role of EMI filtering, used to suppress the high-speed signal lines generated by electromagnetic waves to the outside radiation emission. Common mode inductor is essentially a two-way filter: on the one hand, to filter out common mode electromagnetic interference on the signal line, on the other hand, to suppress itself does not send outward electromagnetic interference, to avoid affecting the normal operation of other electronic equipment in the same electromagnetic environment.

Common Mode Inductor
1. Replace traditional products, such as common mode inductors, UU filters, UT filters, etc;
2.Easy plug-in, high capacity and suitable price;
3. High power, low temperature rise, low loss, high voltage performance, easy to pass EMC test.

Advantages of magnetic ring type cores.
High initial permeability (this is the basic requirement for common mode inductors), high saturation magnetic induction strength, temperature stability compared to ferrite (can be interpreted as a small temperature rise), more flexible frequency characteristics because of the high permeability, very small can make a large inductance, adapt to a wider frequency.


Overall advantages.
Because the initial permeability is 5-20 times that of ferrite, the suppression of conduction interference is much greater than that of ferrite.
the high saturation magnetic induction strength of nanocrystals is better than that of ferrite, so it is not easy to saturate under high currents.
Temperature rise is lower than the UF series, someone actual test: nearly 10 degrees lower at room temperature (personal test value for reference only).
The flexibility of the structure makes it adaptable to different needs by changing the process (see the Magnetic Ring Inductor used in energy-saving lamps, which is quite flexible).
Distributed capacitance will be smaller because the area of the winding is wider and the volume is relatively small.
The number of turns used in the ring line is a little less, the distribution parameters are a little smaller, and the efficiency prevails.