A control system for controlling operational modes of a DC-DC voltage converter is provided. The DC-DC voltage converter initially has an idle operational mode. The microcontroller having first and second operational mode applications. The first operational mode application determines a first encoded value based on the first operational mode value, and further determines first and second values based on the first encoded value. The second operational mode application determines a second encoded value based on the first operational mode value, and further determines third and fourth values based on the second encoded value. The first operational mode application induces the DC-DC voltage converter to transition to the first operational mode if the second value is equal to the third value.