A Zvs Flyback Dc-Dc Converter Using Multilayered Coreless Printed-Circuit Board(Pcb) Step-Down Power Transformer

Autor: Hari Babu Kotte, Radhika Ambatipudi, Dr. Kent Bertilsson
Jazyk: angličtina
Rok vydání: 2010
Předmět:
DOI: 10.5281/zenodo.1077322
Popis: The experimental and theoretical results of a ZVS (Zero Voltage Switching) isolated flyback DC-DC converter using multilayered coreless PCB step down 2:1 transformer are presented. The performance characteristics of the transformer are shown which are useful for the parameters extraction. The measured energy efficiency of the transformer is found to be more than 94% with the sinusoidal input voltage excitation. The designed flyback converter has been tested successfully upto the output power level of 10W, with a switching frequency in the range of 2.7MHz-4.3MHz. The input voltage of the converter is varied from 25V-40V DC. Frequency modulation technique is employed by maintaining constant off time to regulate the output voltage of the converter. The energy efficiency of the isolated flyback converter circuit under ZVS condition in the MHz frequency region is found to be approximately in the range of 72-84%. This paper gives the comparative results in terms of the energy efficiency of the hard switched and soft switched flyback converter in the MHz frequency region.
{"references":["Wong Fu Keung, \"High Frequency transformers for switch mode power\nsupplies-- Griffith University, 2004","Li Rulai and Zhu Yisheng \"The structure and Analysis of Coreless\nprinted Circuit Board Transformers --, 2003, IEEE, ISBN: 0-7803-7831-\n8","S.C.Tang, S.Y.R .Hui and H. Chung, \"Coreless Printed Circuit Board\n(PCB) Transformers -Fundamental characteristics and application\npotential --, ISSN 1049-3654, vol 11, No.3, December 2000","Hui,S.Y.R, Tang,S.C., and Chung.H., \"Coreless printed-circuitboard(\nPCB) transformers for signal and energy transfer\n--,Electron.Lett.,1998,34,(11),pp.1052-1054","Abraham I. Pressman, ÔÇÿSwitching Power Supply Design-2nd Edition,\nMcGraw-Hill,pp.105","C.F.Coombs, ÔÇÿPrinted Circuits handbooks- 5th Edition, McGraw-Hill,\nAugust 27, 2001","Alex Van den Bossche and Vencislav Cekov Valchev, ÔÇÿInductors and\nTransformers for Power Electronics-1st Edition, CRC\nPress,March24,2005","Robert W .Erickson, ÔÇÿFundamentals of Power Electronics-2nd Edition,\nSpringer International Edition, pp.505.","Wojciech A. Tabisz, Pawel M. Gradzki and Fred C.Y.Lee, \"Zero-\nVoltage-Switched Quasi-Resonant Buck and Flyback Converters-\nExperimental Results at 10MHz-- IEEE transactions on power\nElectronics,vol.4,No.2,April 1989.\n[10] Heng-Ming Hsu, \"Effective series-resistance model of spiral inductors\",\nMicrowave and Optical technology letters, vol.46, No.2, July 20 2005.\n[11] Sun-Min Hwang and Tae-Young Ahn, ÔÇÿA ZVS forward DC-DC\nConverter using Coreless PCB transformer and Inductor-2001."]}
Databáze: OpenAIRE
Externí odkaz: