Analysis and implementation of switch mode power supplies in MHz frequency region

In designing switch mode power supply (SMPS), thedesirable feature is to have an efficient and compact design. Themain idea is to increase the switching frequency and reduce thebulky magnetic parts of the converter. This leads to a compactsize, less weight, reduced cost and increased power density of theconverter. This paper presents a high frequency full bridge DC toDC converter, using a multilayer coreless printed circuit board(PCB) step-up power transformer. The converter was simulatedand also implemented on the PCB. The pulse width modulated(PWM) signals were generated, using a microcontroller, to switchthe Metal oxide semiconductor field effect transistor (MOSFET).The design of the converter is tested up to the power levels of 5Watts with the switching frequency in 2 to 3MHz range. Theenergy efficiency of the converter is 74.86% at 2.4 MHz.