Modeling Transfer Function for Buck Power Converter

Switching regulators offer two main advantages compared to the linear regulators. First, switching efficiency is much better than linear. Second, because less energy is lost in the transfer, smaller components and less thermal management are required. A switching power supply has to assure the stability between input and output voltage, the stability between load and output voltage, and a good transient response between different disturbances signals. The paper will outline a mathematical method for modeling the transfer function for switching power supplies. That model will be implemented in Simulink and after that, the result will compared with PSpice. This model can be used to design a best control for power converters.