Electromagnetic Component Integration For Low Power Communication Power Supply

With the progress of the times,the power electronics industry is developing with each passing day.Information processing technology has become particularly important in today’s industrial 4.0 era.Communication power supply is indispensable in the field of communication.It is the power source of ICT Information processing system.Therefore,in order to promote the safe and reliable operation of the information processing system,the selection of communication power supply topology is of great significance.In this paper,a new power supply topology is designed for small communication equipment in the field of low-power communication,such as domestic indoor distribution system,field mobile cellular base station and so on,and the performance of the topology is optimized,that is,further increase of power density,so as achieve the purpose of almost unchanged power conversion efficiency and reducing board level volume.The first chapter of this paper starts with the development of small power communication power supply and focuses on the improvement of power density.It introduces the current demand of small power communication equipment for communication power supply.Next,aiming at the development trend of the higher power density of communication power supply,it introduces several key technologies to improve power density,the significance of flexible multilayer strip electromagnetic integration technology for improving the power density of communication power supply is described in detail.In the process of electric energy exchange,DC is an important part.Its main purpose is to change the previous DC voltage into the final output target voltage.In the second chapter of this paper,a new DC-DC power supply topology resonant forward converter applied in the field of communication is proposed,and its working principle and main advantages are introduced.Then the main component parameters are calculated theoretically,and then its circuit simulation model is built in Simulink to obtain the corresponding data waveform,Finally,a 76.8W(48V/1.6A)resonant forward converter experimental platform is built,and the corresponding waveforms are given to prove the correctness of the topology theory analysis.For the sake of the further improve the power density of power supply topology,aiming at the problem that the passive components such as transformer,resonant inductor and resonant capacitor in the resonant forward converter mentioned in Chapter2 occupy a considerable volume at the board level,this paper uses the flexible multilayer strip electromagnetic integration technology to integrate the main passive components of the proposed topology in Chapter 3,Firstly,the parameter design of FMLF integrated structure is introduced in at length,then the loss analysis and magnetic flux analysis of FMLF integrated structure are carried out by using Maxwell software,and the parasitic and distributed parameter model of FMLF integrated structure is deduced.Finally,a 76.8W FMLF integrated device is built to verify the feasibility of its flexible multilayer strip electromagnetic integration technology theory.In Chapter 4,an integrated resonant forward converter experimental platform with power of 76.8W is built,and the corresponding experimental waveforms and experimental data are given.In addition,compared with the not integrated resonant forward converter,to prove the advanced nature of FMLF technology.Finally,the fifth chapter summarizes the main work of this paper,and prospects the development of flexible multilayer strip electromagnetic integration technology.