How to Solve Heating Issues after SMD Inductor Saturation?

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The heating of inductive coils is due to the low resistance of the coil. When a 220V voltage is applied, it generates a large current, and a large current results in heat. You can try increasing the voltage frequency; as the frequency increases, the inductive reactance increases, and the current decreases.

The wire is too thin, which leads to a high resistance in the inductor. With a constant effective current value, it's normal for the inductor to heat up.

2. Inductor saturation, this type of heating is also quite common.

3. There is a significant oscillation in voltage at both ends of the inductor.

Recommend increasing the core size to reduce the number of turns and shorten the wire length. The manufacturer of surface mount power inductors has undergone a transformation, featuring low ripple current and magnetic loss, primarily due to resistive heating. Check the filter capacitors; capacitor failure can cause the inductor to overheat and discolor.

Are surface mount inductor beads connected after the rectifier tube? If there is a filter capacitor at the inductor's front end, please check for any open circuits.

At this moment, there are two identical inductors in the power supply, one in series with the positive pole and the other with the negative pole (none are faulty). Directly in front of the inductors is a controllable field tube with no other capacitors. Power is supplied to a coil through these two inductors, one positive and one negative, in series, and a controlled pulse direct current is provided by the tube at the front.

1. The wire is too thin, which leads to a high resistance in the inductor. Under the condition of a fixed effective current value for a surface mount high current inductor, it's quite normal for the inductor to heat up.

Layered inductors exhibit oscillating voltages at both ends.

3、Surface Mount InductorSaturation is quite common, and this heating is also prevalent. By replacing the core with a larger one, the number of turns can be reduced, and the wire length shortened. Forward conversion has a small ripple current, low magnetic loss, and is mainly due to resistive heat.

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