alexa Comparative Study of Closed Loop Analysis of Single In
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
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Special Issue Article

Comparative Study of Closed Loop Analysis of Single Inductor Dual Output Buck Converter with Mix-Voltage Conversion Using PI and Fuzzy Controllers

Nayana. A1, Prof.A.Mala2
  1. PG Scholar, Department of EEE, A.C College of Engineering and Technology, Karaikudi-630004, India
  2. Principal & Professor, Department of EEE, A.C College of Engineering and Technology, Karaikudi-630004, India
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Abstract

A single-inductor dual-output (SIDO) buck converter has recently found applications in hand-held battery-powered electronic devices. The circuit operation and the functional interdependencies among basic converter parameters such as dc voltage gains, transistor duty cycles, and load current levels are much more complicated than those of the single-output counterpart. In this paper, a rigorous analysis was conducted to develop dc equations in steady state operation for SIDO converters. More importantly, from the analysis results, a possibility of a new mode of operation, dubbed “mix-voltage” operation, will be pointed out. In the so-called “mix-voltage” operation, the converter is capable of working even when the input voltage is lower than one of the two output voltages. In the past, a SIDO buck converter has been used for providing “pure-buck” outputs, i.e., both output voltages are lower than the input voltage. Therefore, this possibility not only opens up new applications but also extends the operating battery range in existing applications .Simulation results confirmed the dc equations and the “mix-voltage” conversion of SIDO buck converters. The closed loop analysis of SIDO converter in mixvoltage conversion using PI and Fuzzy .controllers against load variations is analyzed. Based on the analysis, performance of the converter using both controllers is compared. Simulation results are presented to validate the proposed converter topology.

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