Optimized Power Management Unit for IoT Applications

Power Management Units (PMU) are rapidly being developed to provide a significant amount of power for sensors in Internet-of-Things (IoT) networks. This paper presents a novel optimized PMU design for IoT applications, which can be used as a part of energy harvesting system that can be composed of solar cells, wind turbine, thermal energy, and vibration. Hence the proposed design can be used as a feasible energy harvester, where notable power efficiency is achieved here over traditional PMU designs under the same circumstances. The optimized PMU is developed using a buck-boost DC-DC converter. The particle swarm optimization (PSO) is then applied to optimize the parameters of PMU, including buck-boost DC-DC converter, and control circuitry to achieve maximum power point and improve the overall efficiency.