Design of Single Input Multiple Output Buck Converter with Light Load Efficiency
Pragnya R Mogha1, Manish Rathi2

1Pragnya R Mogha*, PG Scholar, Department of Electrical and Electronics Engineering, PDA College of Engineering, Kalaburagi(Karnataka), India.
2Manish Rathi, Associate Professor, Department of Electrical and Electronics Engineering, PDA College of Engineering, Kalaburagi(Karnataka), India.

Manuscript received on June 08, 2021. | Revised Manuscript received on June 12, 2021. | Manuscript published on June 30, 2021. | PP: 248-251 | Volume-10 Issue-5, June 2021. | Retrieval Number: 100.1/ijeat.E27870610521 | DOI: 10.35940/ijeat.E2787.0610521
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Abstract: The major demand for portable electronics devices such as pagers, laptops, cellular phones etc. Single input multiple output (SIMO) converter will be proposed to give different supply voltages while keep up prolong battery life. A single-discharge (SDC) control scheme is introduce to simplify the Single inductor multiple output design, attain to low cross regulation, and to support board range of loads with decent efficiency of power. A Single discharge control single input multiple output buck converter with 4 outputs composed of comparators, phased-locked loop, finite state machine (FSM) controller, and an output stage. In addition to the basic switching functions, the FSM controller provides a state skipping feature to allow no-load regulation. Single input multiple output converter is available for less cost and used for maintaining long battery life and they are growing in vast range with rich feature portable electronic device. The design of converter is designed for limited range for prolonged battery life. The SIMO converters are used for the reduction of cost and switching losses, hence improve system efficiency. In our study, we proposed buck converter topology with single input of 24v and multiple output of 12v and 5v. The 12v voltage is used for electric vehicles. In electric vehicles it is used in horns and headlights. 5v voltage is used for small signal and stability analysis. The simulated conversion efficiency for peak power is 86% the power ranging for output is 50 to 300mW. The ICs exhibit has a low measured peak efficiency of 73%and cross regulation of 0.24 mV/mA because of parasitic bond wire resistance.The proposed system is simulated in MATLAB/Simulink software. 
Keywords: DC-DC Converter, Finite State Control Controller, SIMO Converter, Portable Electronic Device, Electric Vehicle.