The new requirements for point-of-load converters include the dynamic behavior, leading to the need for improvements in the control system for the conventional buck converter. Usually, the regulator design, in order to secure stability at parameter or mode variation, aims a zero steady-state error and a phase margin over 60 degrees. The design based on Venable’s K-factor method (Venable, 1983) helps achieve this topic. A more modern control design method based on State Space is used progressively on digital platforms. This paper extends the merits of the State Space based design procedure with an analogous mode implementation.