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An Integrated Single Input Multi-Output DCDC Converter with Simultaneous Buck and Boost Outputs

Chinnu V V, Daisykutty Abraham, Ninu Joy

Multi-port DC-DC converter topologies can be used to generate multiple DC outputs from a single DC input source. The voltage gains can be step-up and/or step-down type. This paper proposes a multi-port DC-DC converter topology which generates multiple outputs, which can step-up as well as step-down, from a single DC input. Operating modes and steady state behaviour of the proposed converter has been studied in this paper. Using MATLAB/SIMULINK (R2010a) the proposed converter topology is simulated to generate four outputs (two step-up and two step-down) from a single DC input. The control scheme used here is PIC controller (PIC16F877A) to control multiple outputs. The behaviour of the proposed converter has been verified using a laboratory prototype, which produces a step-up voltage of 30 V and a step-down voltage of 6 V from a single 15 V DC input.