What is the reason for the heating of the magnetic ring inductor coil?

The characteristics of the heating of the magnetic ring inductance coil:

The function of the magnetic loop inductance coil is to store energy, suppress electromagnetic interference, pass DC to resist AC, when the current flowing through the inductance coil is large, the coil will heat up, in severe cases it will become hot, the inductance of the inductor will attenuate, and the surface temperature of the inductor body , When the temperature rise current exceeds 40 degrees Celsius, the inductor will lose its inductance characteristics. In severe cases, the entire PCB board will be burnt.

There are three reasons for the heating of the magnetic loop inductance coil:

1. The resistance is large, the wire diameter is small, or the number of windings is too large, which causes the copper resistance to be too high.

2. Magnetic ring material. The magnetic ring is a magnetic material with magnetic saturation capability. The higher the magnetic permeability, the worse the magnetic saturation capability, and the smaller the saturation current, the easier it is to generate heat.

3. The size of the magnetic ring. The larger the size of the magnetic ring, the larger the diameter of the coil and the less the number of turns can be used. The current capacity is strong and it is not easy to generate heat.

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