A Non-Insulated Step-Up/Down DC-DC Converter With Wide Range Conversion

ABSTRACT:

 In this paper an approach of a step-up/down dc-dc converter with wide range conversion called Boost²-Buck is presented. The proposed converter presents nonpulsating input and output current. It has operations equivalent to a cascade converter consisting of two boost converter and one buck converter, but with the advantage of using single active switch. Mathematical analysis and experimental results are presented for converter operating with output power of 20W.

SOFTWARE: MATLAB/SIMULINK

CIRCUIT DIAGRAM:

CONCLUSION:

The boost²-buck converter presented in this paper provides a wide range of dc conversion when compared with the conventional non-insulated dc-dc converters. This topology presents non pulsating input and output current. It has operations equivalent to a cascade converter consisting of two boost converter and one buck converter, but with the advantage of using single active switch. Consequently, when compared with a converter cascade, it is cheaper, less bulky and uses circuit control simpler. Through the experimental results is possible to prove the performance of the converter as well as the theoretical analysis presented.

REFERENCES:

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