How does the winding direction of high-power inductors affect the inductance?
How does the winding direction of high-power inductors affect the inductance? How should inductor manufacturers respond?
A mark (mark) that can distinguish the directionality is often attached to the wire-wound inductor.
If the structure of high-power inductors is not completely symmetrical, high-current chip inductor manufacturers will produce characteristic differences in the packaging direction. Therefore, in order to make the product give full play to its due characteristics during use, the product is often marked with a mark to indicate its directionality.
What is the influence of inductance and magnetic field in the winding direction of high-power inductors?
1. For high-power inductors, different packaging directions will result in substantial changes in the inductance value of the winding inductor.
2. The change rate of packaging direction and inductance value
High-power inductors store energy in a magnetic field to perform their functions. However, inductance is not only affected by the electromagnetic energy generated by itself, but also by external magnetic flux. The inductance value of the guaranteed component refers to the value under the condition of no external magnetic flux. Therefore, when the high-current magnetic bar inductor is packaged in the presence of external magnetic flux, it may not be able to perform its due function. As a typical example, multiple inductors will be packaged very closely.
3. It is the change in inductance value when multiple SMD power inductors are arranged closely for packaging.
4. The rate of change of package distance and inductance value
High-power inductors will generate magnetic flux. The magnetic flux radiates to the outside, and this part of the energy is lost. If multiple inductors are tightly packaged, the magnetic flux radiated from each inductor to the outside will interfere with each other, failing to achieve the desired product characteristics.
