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The transformer is through the principle of electromagnetic induction, the AC power with a specific voltage level is converted into the same frequency as another voltage level of the AC power device. With the development of electronic technology, electronic transformer industry structure has undergone great changes, showing the diversity of product types. International rapid development of power electronics technology and presents a high-frequency, high power density, miniaturization trend, electronic transformer performance increasing demands. Conventional transformer with a core and coil dimensional energy converters, high frequency, small size, low power consumption due to the development of LSI technology, high-frequency transformer, so the study can replace conventional transformer planar transformer become hotspot in recent years, and have appeared many different structures of planar transformers, such as PCB planar transformers. This paper introduces a new type of semiconductor planar transformers, also known as IC transformer. The working principle is the same as the conventional transformer, but with ever a transformer has a big difference. Compared to the plane of the PCB transformers, this new transformer combination of semiconductor technology, a certain set out of the coil of the carrier density in the semiconductor substrate using the etching of the doping process, and therefore smaller, more efficient power density greater, is truly on the micro-planar transformers. This article first introduced the basic structure of the conventional transformer and works, analyzes the limitations in switching power supplies, aerospace and other applications; thus leads to the concept of a semiconductor planar transformer, describes the three-dimensional model of the semiconductor planar transformer and coil structure, introduce The basic operating principle; then build the circuit model in accordance with a conventional transformer mode, using MATLAB programming seek inductance, resistance and capacitance parameters calculation method; followed by the analysis of semiconductor planar transformer losses and transformer efficiency, and finally the use of SimPowerSystems based on MATLAB programming done to further explore the relationship between voltage magnification ratio and load. Currently, semiconductor planar transformer is only in the phase of theoretical research, However, with further in-depth research, there is reason to believe the future it will be because of its widely used in national defense, aerospace, communications, computer, automotive electronics, digital products and many other outstanding advantages a field.
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