In this paper, we are introducing the closed-loop bidirectional (buck/boost) converter which operates in buck mode as well as boost mode. By this, we can step up/ step down the voltages according to our requirements. The bidirectional DC-DC converter is a crucial device in a renewable energy systems as it is helps to maintain a stable power flow between the energy source, storage device(batteries), and the load. This is especially important as the performance of renewable energy system can be affected by changes in climate. The same bidirectional converter technology is also used in electric vehicles, where it helps to transfer power between battery storage system and the motor in both directions. As a result, bidirectional DC-DC converter has become increasingly popular in both academic research and industrial applications. In summary, a bidirectional DC-DC converter is a device that facilitates power transfer in both directions.