The aim of this chapter is to introduce the test case we will be dealing with in the following sections. As mentioned in the introduction, it would be extremely difficult to describe the numerous applications of digital control to switch mode power supplies, since this is currently employed in very wide variety of cases. In order not to confuse the reader with a puzzle of several different circuit topologies and related controllers, what we intend to do is to consider just a single, simple application example, where the basics of the more commonly employed digital control strategies can be effectively explained. Of course, the concepts we are going to illustrate, referring to our test case, can find a successful application also to other converter topologies.
