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http://dx.doi.org/10.7471/ikeee.2020.24.3.828

A Study on the Optimal Design of Planar Flyback Transformers suitable for Small-size and Low-profile  

Na, Hae-Joong (Institute of industrial Technology, Yeungnam University)
Kim, Jong-Hae (School of Electronic and Electrical Engineering, Daegu Catholic University)
Publication Information
Journal of IKEEE / v.24, no.3, 2020 , pp. 828-837 More about this Journal
Abstract
This paper presents the optimal design of planar flyback transformer suitable for small-size and low-profile of AC to DC adapter for 10W tablet. This paper also proposes the injection winding transformer of Hybrid and Drum types capable of the winding method of automatic type and the reduction of transformer size and leakage inductance(Lk) compared to the conventional mass-production flyback transformer with the winding method of manual type. In particular, the injection winding transformer of Drum type proposed in this paper is constructed in a horizontal laying of its transformer to solve the connection problem of copper plate injection winding on the secondary side of the one of Hybrid type. The primary and secondary windings of the injection winding transformer of Hybrid and Drum types used the conventional winding and the copper plate injection winding, respectively. For the injection winding transformer of Hybrid and Drum types proposed in this paper, the optimal design of planar flyback transformer suitable for small-size and low-profile was carried out using Maxwell 2D and 3D tool.
Keywords
AC/DC adapter; Drum type; Hybrid type; Injection winding; Leakage inductance;
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