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A. Majid,H.B.Kotte,J.Saleem,R.Ambatipudi,S.Haller,K.Bertilsson 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper introduces high frequency half bridge DC-DC converter, using multilayered coreless Printed Circuit Board (PCB) step down power transformer. The converter is simulated and then implemented on a PCB. Complementary Pulse Width Modulated (PWM) signals are generated to turn on high and low side Metal Oxide Semiconductor Field Effect Transistors (MOSFETs) alternately by a micro-controller. The isolated gate drive signals are provided to the high side MOSFET by using high frequency coreless PCB isolation transformer. We tested the converter for switching frequency range of 2 to 3 ㎒, and for maximum input voltage up-to 170 V. The maximum output power achieved is 40 W and the maximum energy efficiency is approximately 82 %.