Practical design of a DC-DC buck converter using an RCD snubber

This paper presents a design-oriented approach for the practical implementation of a dc-dc buck converter associated with a dissipative snubber. Initially, it is possible to determine the static gain from the charging and discharging times of the inductor, resulting in an expression that is valid for any conduction mode and does not depend on the load condition. The influence of the snubber circuit is also analyzed in detail considering tradeoffs between the maximum voltage stress across the switch and related losses. Experimental results are also presented in order to validate the theoretical assumptions.