Differential common-mode inductor

Abstract

The invention relates to the technical field of an inductor, in particular to a differential common-mode inductor. The differential common-mode inductor comprises a framework, wherein the framework isformed by fixedly buckling two clamping seats, a plurality of winding grooves are formed in the framework, a pin is arranged at a side of each winding groove, an enameled wire is wound around each winding groove to form a coil, the coil is provided with a connection wire in an extension way, the connection wire is welded and connected with the pin, magnetic cores are correspondingly inserted intotwo sides of the framework, and fixed clamps are arranged at upper parts of the magnetic cores and are used for fixedly clamping the magnetic cores. On the basis of the differential common-mode inductor, the magnetic core structure is changed, the volume and the height of the inductor are reduced, the utilization ratio of a magnetic component is improved, and the integration of a power electronicsystem is improved.

Description

technical field [0001] The invention relates to the technical field of inductors, in particular to a differential common mode inductor. Background technique [0002] Inductors are essential components in aerospace, digital products, electronic switches, photovoltaic power generation and many other fields. How to effectively design the inductance parameters, increase the power density, and improve the electromagnetic interference (EMI) situation is not only related to the normal operation of the system, but also related to the optimization of the overall performance and the stable and reliable operation of the control part. [0003] Inductance is an important means to improve EMI performance. However, each component of the inductor has high-frequency non-ideal characteristics, especially as the frequency increases, due to the existence of parasitic parameters, the high-frequency performance of the inductor becomes worse. At this time, the ability of the inductor to eliminate...

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Problems solved by technology

However, each component of the inductor has high-frequency non-ideal characteristics, especially as the frequency increases, due to the existence of parasitic parameters, the high-frequency performance of the inductor becomes worse. At this time, the ability of the inductor to eliminate common-mode interference and differential-mode interference is reduced, which may cause the whole system to not work properly

[0004] In the prior art, differential-mode inductors and common-mode inductors need to be used together. Most of them are differential-common-mode integrated filter inductors. The differential-mode and common-mode inductors are integrated together. One magnetic ring uses ferrite material with high magnetic permeability, and one magnetic The ring is made of low magnetic permeability iron powder core material, but this structure requires two kinds of magnetic cores, which are bulky and cumbersome.

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