Magnetic component integrated active clamp positive and negative laser converter

Abstract

An actively clamped forward-flyback converter of an integrated magnetic element comprises a primary circuit (1), a secondary rectification and capacitance filter circuit (3) which consists of a filter circuit and a rectification circuit as well as an integrated magnetic circuit (2) which is connected with the primary circuit (1) and the secondary rectification and capacitance filter circuit (3); wherein, the integrated magnetic circuit (2) is composed of iron cores of at least three magnetic pillars; one of the magnetic pillars is respectively wound with a primary winding (Np) and a secondary winding, thus forming a transformer magnetic circuit; the other one of the magnetic pillars is wound with an inductive winding (NL) to form an inductive magnetic circuit; and at least another one of the magnetic pillars forms a common magnetic circuit of the transformer magnetic circuit and the inductive magnetic circuit; the magnetic pillars of the transformer magnetic circuit and the inductive magnetic circuit are respectively provided with an air gap; the primary winding (Np) is connected with the primary circuit (1) of the converter, the secondary winding is connected with the rectification circuit of the secondary rectification and capacitance filter circuit (3); the inductive winding (NL) is connected with the filter circuit of the secondary rectification and capacitance filter circuit (3); and the rectification circuit and the filter circuit are connected with the output terminal. The invention is small in volume and light in weight.

Description

technical field [0001] The invention relates to a converter, in particular to an active clamp forward and flyback converter with integrated magnetic elements. Background technique [0002] The rapid development of power electronics technology has continuously put forward higher requirements for the power density, efficiency, output ripple and dynamic performance of the converter, especially the rapid development of the microprocessor has put forward great requirements for the module power supply that supplies power to it. challenge. While applying a variety of technical means to improve the performance of the module power supply, it is increasingly found that magnetic components (referred to as magnetic components, including inductors and transformers) are an important factor that limits the volume, weight, and efficiency of the converter. According to the statistics of the American Power Supply Manufacturers Association (PSMA), the volume of the magnetic parts accounts for...

AI Technical Summary

Problems solved by technology

Obviously, the traditional active-clamp forward-flyback (FFAC) converter has two magnetic components, a transformer and an inductor. According to the above, it can be seen that there are problems of large volume and weight.

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