This article introduces voltage feedback controlling using the PI controller tuned gains by metaheuristic optimizations for a fourphase\ninterleaved boost converter. The metaheuristic optimizations, particle swarm optimization (PSO), genetic algorithm (GA), and\nTabu search (TS) are applied to find the optimal gains for the proposed control system. In experiment, the designed control system is\nimplemented on the DSP board TMS320F28335 with MATLAB/Simulink. In this paper, there are two conditions of the control\nsystem in the test, without load and with load. The response result of the proposed control system tuned gains by PSO is no overshoot\nand approaches to the steady state better than GA and TS methods. Moreover, it is able to maintain the output voltage feedback at a\nconstant level according to the control signal both without load and with load conditions. As a result, the four-phase interleaved boost\nconverter is regulated by the PI controller tuned gains with PSO which could efficiently maintain the voltage of both levels.
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