This Paper proposes a Multiple Input Interleaved Boost Converter (MIIBC) for renewable energy applications. As the increasing demand on renewable energy resources, power electronic devices are obligatory to fit the fragmentary nature of these sources. Generally, DC-DC Boost converter is used for low voltage application systems supplied by batteries. For lofty power requisition Boost converter isn't as adept, as a result of high input current ripple that is added to the current flowing out of fuel cell and this input current causes reduction in battery life. The multiple input converter (MIC) provides compensation of mismatching of electrical characteristics of sources such as Fuel cell and Photovoltaic cell. The main purpose of multiple input converter is of four different aspects cost, potential modularity, reliability, and flexibility. The interleaved boost converter (IBC) consists of two parallel connected boost converters with 180° phase shift switching. This provides reduced input and output ripple, higher efficiency, and also maintains high power density. The dc inputs to the MIIBC are 50 V photovoltaic (PV) module and a 45V/6.5kW fuel cell, which are modelled using the MATLAB/Simulink. © 2019 IEEE.