Transformer comparison by core form and winding structure Woong-Jae Kang Department of Electrical Engineering Graduate School Gyeongsang National University

Flyback Transformer Performance by Core and Winding Structure 

 Abstract 
Transformer comparison by core form and winding structure Woong-Jae Kang Department of Electrical Engineering Graduate School Gyeongsang NationalUniversity 

Supervised by Professor Hwi-Beom Shin
The leakage inductance of the flyback transformer causes the voltage spike in the MOSFET switch. The RCD snubber is typically used to reduce the voltage spike. The current method change the transformer winding structure to reduce effect of leakage inductance, because it is difficult to reduce influence of leakage inductance any more in circuit improvement. In this paper, it show the change for voltage spike and ringing depending on winding structure and core form of transformer.
LINK
http://www.mediafire.com/file/6kj45ksizg7z5m2/FLYBACK_PLANO.pdf