FPGA based digitalized power supplies

In power supplies the controller implements different control strategies according to the output current demand, in order to keep the efficiency as high as possible over the whole range of load values. In this context, control of power supplies has been traditionally achieved through analog means with dedicated integrated circuits (ICs). As power systems are becoming gradually more complex, the classical concept of control has increasingly evolve into the more general problem of power management, demanding functionalities that are hardly attainable in analog controllers. Using digital control in power supplies is significantly more flexible than analog control in its ability to adapt to changes and digital control inside the power supply results in advantages to the system application such as improved efficiency, external components and overall cost reduced. Field-programmable gate arrays (FPGA) is preferred for power supply due to its merits. The feature of reprogramming capability of FPGA makes design easy and practical implementation within a short time.