Chip transformer, manufacturing method thereof and printed circuit board

Abstract

The invention discloses a chip transformer. The chip transformer comprises a magnetic core and a winding which are assembled together; the chip transformer further comprises a heat dissipation layer which wraps at least part of the outer surface of the magnetic core or wraps at least part of the outer surface of the whole body of the magnetic core and the winding, and a packaging layer which is packaged outside the magnetic core, the winding and the heat dissipation layer, and at least exposes part of the heat dissipation layer. According to the chip transformer of the technical schemes, the heat dissipation layer can guide heat generated in the chip transformer to the outside of the packaging layer, and then the heat dissipation layer can be further connected with the substrate of a printed circuit board so as to perform heat dissipation treatment, so that the heat dissipation performance of the chip transformer is improved. In addition, the invention further discloses a manufacturing method of the chip transformer and a printed circuit board.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a chip transformer, a manufacturing method thereof and a printed circuit board. Background technique [0002] A transformer is a static electrical device that transforms voltage or current between two or more windings at the same frequency by means of the principle of electromagnetic induction. A traditional wound transformer generally includes a coil support made of insulating material, a coil wound on the coil support and an iron core wrapped outside the coil. With the continuous development of power electronic equipment in the direction of smaller size, higher power density and higher efficiency, transformers, as one of the key components in power electronic equipment, tend to be miniaturized, so chip transformers emerge as the times require. [0003] The overall structure of a chip transformer includes windings and a magnetic core. Among them, the commonly used magneti...

AI Technical Summary

Problems solved by technology

However, after the winding and the magnetic core are packaged, the packaging layer wraps the winding and the magnetic core as a whole, which is not conducive to the effective dissipation of the heat generated inside the chip transformer, resulting in poor heat dissipation and affecting the performance of the chip transformer

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