Modified Interleaved Buck Converter with Reduced Input Current and Number of Switches

Ashitha P; Smitha Paulose; Emmanual Babu P

doi:https://doi.org/10.14445/22315381/IJETT-V50P224

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Volume 50 | Number 1 | Year 2017 | Article Id. IJETT-V50P224 | DOI : https://doi.org/10.14445/22315381/IJETT-V50P224

Modified Interleaved Buck Converter with Reduced Input Current and Number of Switches

Ashitha P, Smitha Paulose, Emmanual Babu P

Citation :

Ashitha P, Smitha Paulose, Emmanual Babu P, "Modified Interleaved Buck Converter with Reduced Input Current and Number of Switches," International Journal of Engineering Trends and Technology (IJETT), vol. 50, no. 1, pp. 155-160, 2017. Crossref, https://doi.org/10.14445/22315381/IJETT-V50P224

Abstract

There are many applications which needs low voltage DC supply in controlled manner. It includes various microcontrollers, several electronic ICs, laptops, traction signalling, electric vehicles etc. This DC-DC converter with interleaved technique can step down a high DC voltage to very low DC voltage with lesser voltage ripple and low value of inductor and capacitor. Since inductor and capacitor is having low value, the system will be of reduced size. With conventional buck chopper for converting high voltage to low voltage, very small duty cycle is required which further adds several limitations on different components and triggering circuitry. It requires relatively high values of inductor and capacitor. So the size of the system will be large. Comparatively the current ripple and voltage ripple will be more. The proposed converter reduces the complexity of the circuit and the input current also reduced. Here Simulations have been performed using MATLAB / SIMULINK. All results clearly show that very low voltage can be obtained using this topology. Moreover, the desired values of the output voltages can be numerically calculated which absolutely match with simulation results. Analysis is carried out by plotting the variation of voltage ripple with different frequencies.

Keywords

interleaved buck converter, DC-DC converter, Interleaved switches.

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