Single Inductor Multiple Output Buck-Boost Converter
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2017 by IJETT Journal|
|Year of Publication : 2017|
|Authors : Jais Joseph, Prof. Dinto Mathew, Prof. Sera Mathew
|DOI : 10.14445/22315381/IJETT-V50P226|
Jais Joseph, Prof. Dinto Mathew, Prof. Sera Mathew "Single Inductor Multiple Output Buck-Boost Converter", International Journal of Engineering Trends and Technology (IJETT), V50(3),167-172 August 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
There are many devices which provide multiple power supplies of different voltages. Voltage level may be greater than the source voltage or less than the source voltage depending on the application. Multiple supplies through the single source can be achieved by connecting multiple DC-DC converters in parallel but that will result in the requirement of large number of inductors of different values but inductors are bulky and difficult to integrate. To overcome this disadvantage we can use a Single Inductor Dual Output (SIDO) DC-DC converter. This SIDO DC-DC converter operates with one output in both buck and boost mode and other output in boost mode only. SIDO DC-DC converter has two switches, two diodes and a single inductor to multiplex the both output circuits by suitable switching. This reduces the size of the device, reduces cost, improve efficiency. Here the SIDO buck- boost converter is modified to Single Inductor Multiple Output (SIMO). By this we get three outputs with buck, boost and buck-boost operation. The simulation of the converter is performed using MATLAB/Simulink. The prototype for SIDO buck-boost converter with switching frequency of 20 kHz and an input voltage of 10 V is designed and implemented using PIC16F877A.
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Single Inductor DC-DC Converter , Cross Regulation, Buck-Boost operation, Multiple Output.