Comparison of Different Schemes for VRM Application

Buck converters have counted a lot of problems last days as the industry trend moves towards high operating frequency. Moreover, future VRM requires high output current/low voltages that results in tight duty cycles, especially in case of higher input voltages that can not be achieved in the practical circuit. A lot of solutions have been proposed, one of them can be using flyback converter. Therefore, in this paper, a comparison between two converters, buck converter and flyback converters operating as voltage-regulated-module (VRM) is provided. The advantage and disadvantage of every converter is listed and a detailed comparison is introduced