Title :
A comparative study of high-frequency, low-profile planar transformer technologies
Author :
Dai, N. ; Lofti, A.W. ; Skutt, G. ; Tabisz, W. ; Lee, F.C.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
A study several of available technologies used to construct low-profile, planar transformers is presented. Finite element analysis is used to determine an appropriate winding configuration with low AC resistance and leakage inductance. The advantages and disadvantages of printed circuit board (PCB), flex-circuit and stamped-copper winding technologies are evaluated. The trade-offs between electrical and mechanical properties are emphasized. It is demonstrated that the secondary winding termination resistances for these transformers constitute a large percentage of the total AC resistance of the transformer
Keywords :
finite element analysis; high-frequency transformers; power electronics; power transformers; transformer windings; AC resistance; HF planar transformer; PCB; electrical properties; finite element analysis; flex-circuit; leakage inductance; low profile; mechanical properties; power electronic circuits; printed circuit board; secondary winding termination resistances; stamped-copper winding; winding configuration; Guidelines; Inductance; Magnetic analysis; Magnetic cores; Magnetic fields; Mechanical factors; Power electronics; Power engineering and energy; Power supplies; Transformer cores;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316395
