Modelling of flyback converter using state space averaging technique

In 1960s demand made by space programs led to the development of power supplies that are highly reliable, efficient, light weight and small in size. The innovative ideas of the engineer's usher in the era of modern power electronics and switch mode power supplies came into existence. Design and optimization of dc-dc converter which offers high efficiency, small converters with isolation transformers can have multiple outputs of various magnitudes and polarities. The regulated power supply of this type has a wide application such as digital systems, in TVs instrumentation system, in industry automation etc., where in a low voltage, high current power supply with low output ripple and fast transient response are essential. This paper gives the methodology to model flyback converter (24V dc – 5V dc) operating under continuous conduction mode by using state space averaging technique which linearizes the system and simplifies the designing procedure.