Increase in demand for power in the world has intensified the need for renewable energy power resources due to the scarcity of non-renewable power sources. Solar power is gaining popularity as it is ecofriendly, portable and clean. Isolated DC–DC converters are popular in a wide range of applications. High efficiency, conversion ratio and isolation between the low- and high-voltage circuit are the main features of the isolated converter. This paper proposes design, modeling and simulation of the push–pull converter in MATLAB/Simulink. The design procedure and principle of operation are also presented in the paper. The state space averaging technique is used to model the converter, and Bode plot is used to design a PI controller to obtain the required output voltage.