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How to reduce the loss of inductive magnetic core

by:Transmart     2020-06-06
Everyone knows inductive magnetic core is a lot of electronic products used in to a product, such as mobile phones, MP3, MP4, computer, converters, transformers and LED TV screen and so on. And you should also know, electronic products have a certain amount of loss in the process of use, and inductive magnetic core is no exception. But, if when the inductor core loss is too big, will lead to a drop in the service life of inductive magnetic core, serious word will affect the normal operation of the application of inductive magnetic core products. So we should be how to reduce the wastage of the inductive magnetic core? Inductive magnetic core cause of the loss of what? Due to SMT inductance core loss mainly comes from two aspects of core loss and winding loss, and the two aspects of the loss quantity and the size of the need to judge according to the different circuit models. Among them, the core loss is mainly because the alternating magnetic field in magnetic core material, its loss is generated by the operating frequency and the total magnetic flux swing ( ΔB) The function, will greatly reduce the conduction loss effectively. Coil loss because of the magnetic energy changes caused by the energy loss, it will be when power inductor current decline, decrease the strength of the magnetic field. And reduce the loss of core method: 1, the inductive magnetic core of core loss with inductive magnetic core loss increase and decrease of allowable copper loss, but also can bring the same inductive magnetic core material flux surge. So when the switching frequency rose to more than 500 kHz, inductive communication core loss and winding loss can greatly reduce allow dc current in the inductor. 2, inductive magnetic core loss is mainly embodied in the coil on the copper loss, so want to reduce the loss of a copper wire, must be in the inductance rises lower core loss and continues until the same loss. The best situation is keep equal loss under high frequency stability, and the allowed maximum output current from the magnetic structure.
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