Digital controller for an isolated half-bridge DC-DC converter

Digital controllers are increasingly being used especially in complex systems, including power electronics systems, because of their advantages. In this paper, design, simulation, and experimental results of a fully digitally controlled half-bridge converter with current-doubler are presented. Digital system blocks effects are considered in the digital compensator design to achieve sufficient closed loop gain and phase margins and verified experimentally. Moreover, additional necessary functions are integrated in this digital controller, such as OVP/OCP functions and dead time optimizing function