Nowadays, electronic devices are powered by battery. That battery provides a constant voltage; hence a voltage regulator is necessary. The Buck Converter is a kind of voltage regulator which provides a constant output voltage, regardless of the input voltage. This thesis is about the Buck Converter's efficiency and its importance to achieve good results when designing.

The Buck Converter is a voltage regulator consisted on an electronic circuit composed by a mosfet, a diode, an inductor and a capacitor. There are some implicit losses which depend on the choice of the different components. Therefore, the topic of this thesis is focused on that choice and the simulation with the components chosen shows the efficiency achieved. To simulate, it is necessary to make the mathematical analysis of the converter.