In recent years, due to development of high-performance semiconductor technologies especially microcontrollers and power electronic systems have progressed. Today, most kind of power electronic applications are used widely. One of the important power electronic applications is the DC-DC converter. Expectations from the converters are high regulation capability, wide operation range and high efficiency. In light of the foregoing, the purpose of this thesis is to design microcontroller based boost converter which boosts output voltage to fixed 24V under given conditions as 12-22V DC input voltage range and variable output load. Simulation study of the design has been simulated in MATLAB/Simulink environment. In the design phase, control of the system performed via control algorithm which is embedded in the microcontroller. In the implementation phase, some performance analyses have been done. These are respectively, performance of the output voltage under conditions of variable input voltage, performance of the output voltage under conditions of fixed input voltage and variable output load. Then obtained performance analyses have been put together, as performance of the boost converter, which works in variable input voltage and variable output load. Finally, system efficiency has been assessed under mentioned output power range.
Key Words: Boost converter, Microcontroller, Control Algorithm.