Efficient Controller implementation of Single Inductor multiple output Converter

Abstract

Rapid change in technology and growing trends in electronics devices, markets are looking for efficient devices with compactable size. Several digital devices and charging infrastructures requires dynamic voltage supply level in single module. To fulfill all desired requirements is to add an individual supply source for each device in module, but this would lead towards a large PCB size and more cost. To satisfy the industrial & commercial needs, an alternative is the use of SIMO DC converter having single inductor and multiple output channels. The core aim of current research is to implement an efficient controller design of single inductor multiple output (SIMO) DC converter circuit operating in CCM for dynamic voltage application. The SIMO circuit comprises of PV array as a renewable energy harvesting source at input. Hysteretic controller design based on Direct control with seamless transition control topology is implemented on this model for sharing the inductor stored energy among the various connected outputs. For proposed circuit, the switching frequency to generate the gating pulses for various switches are 20KHz. The configuration of solar array is designed to deliver maximum power on the input of SIMO DC-DC converter. For tracking the MPPT incremental conductance with integral control configuration is applied on PV array with fast speed and efficiency. This research used MATLAB/Simulink for model configuration and parameters evaluations. Results show that the proposed SIMO configuration with PV array provided 100.5W and 21.42W for 1000 and 250 � �2 respectively. This is significantly high power compared with 8.4W of previously reported SITO buck boost configuration.