Design of Type-III controller for dc-dc switch-mode boost converter

DC-DC power converters have played a key role for different fields applications. Such demanding applications have been required a steady source of voltage irrespective any changes in line and load. The steady-state behaviors of these power-supplies have been defined by the converter topology. But the controller has taken place an important role for maintaining the accurate transient i.e. dynamic performance in dc-dc power-supplies. Some dc-dc power-supplies like boost, buck-boost etc have a right-half-plane zero i.e. there is a problem of nonminimum phase, so it is difficult for the PID controller to exhibit good performance. For this reason a special kind of classical controller i.e. Type-III controller is introduced for obtaining better performance. This paper describes the designing of a Type-III controller for a dc-dc switched-mode boost converter.