Design, Simulation and Implementation of an Isolated Switched-Mode Power Supply

摘要

The aim of this work is to design and analyze an isolated switched mode power supply controlled by the microcontroller F28335. A full bridge converter has been chosen in order to achieve a high level of power (up to 1 kW). Basically, full bridge converter is a transformer-isolated buck converter in which the energy transfer from primary to secondary is controlled using four switches connected to the primary. The ratio of the switch decided the output level. In this paper, a full bridge converter circuit is designed to obtain a pure DC voltage ranging between 0 V and 600 V from 220 V, 50 Hz AC mains. The output current can be regulated with a PID controller.