Buck Converter with Cubic Static Conversion Ratio

The paper introduces a step-down converter that exhibits a static conversion ratio of cubic nature, providing an output voltage which is much closer to the input voltage, and at the same duty cycle, compared to a wide class of one-transistor buck-type topologies. Although the proposed topology conta...

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Main Authors: Delia-Anca Botila, Ioana-Monica Pop-Calimanu, Dan Lascu
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/24/2/696
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author Delia-Anca Botila
Ioana-Monica Pop-Calimanu
Dan Lascu
author_facet Delia-Anca Botila
Ioana-Monica Pop-Calimanu
Dan Lascu
author_sort Delia-Anca Botila
collection DOAJ
description The paper introduces a step-down converter that exhibits a static conversion ratio of cubic nature, providing an output voltage which is much closer to the input voltage, and at the same duty cycle, compared to a wide class of one-transistor buck-type topologies. Although the proposed topology contains many components, its control is still simple, as it employs only one transistor. A dc analysis is performed, the semiconductor stresses are derived in terms of input and output voltages and output power, revealing that the semiconductor voltage stresses remain acceptable and anyway lower than in other cubic buck topology. All detailed design equations are provided. The state-space approach is used to analyze the converter in the presence of conduction losses and a procedure for calculating the individual power dissipation is provided. The feasibility of the proposed cubic buck topology is first validated by computer simulation and finally confirmed by an experimental 12 V–10 W prototype.
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spelling doaj.art-cb2f1b5a1c60439a890e8f03750c91c52024-01-29T14:18:28ZengMDPI AGSensors1424-82202024-01-0124269610.3390/s24020696Buck Converter with Cubic Static Conversion RatioDelia-Anca Botila0Ioana-Monica Pop-Calimanu1Dan Lascu2Applied Electronics Department, Politehnica University Timisoara, 300223 Timișoara, RomaniaApplied Electronics Department, Politehnica University Timisoara, 300223 Timișoara, RomaniaApplied Electronics Department, Politehnica University Timisoara, 300223 Timișoara, RomaniaThe paper introduces a step-down converter that exhibits a static conversion ratio of cubic nature, providing an output voltage which is much closer to the input voltage, and at the same duty cycle, compared to a wide class of one-transistor buck-type topologies. Although the proposed topology contains many components, its control is still simple, as it employs only one transistor. A dc analysis is performed, the semiconductor stresses are derived in terms of input and output voltages and output power, revealing that the semiconductor voltage stresses remain acceptable and anyway lower than in other cubic buck topology. All detailed design equations are provided. The state-space approach is used to analyze the converter in the presence of conduction losses and a procedure for calculating the individual power dissipation is provided. The feasibility of the proposed cubic buck topology is first validated by computer simulation and finally confirmed by an experimental 12 V–10 W prototype.https://www.mdpi.com/1424-8220/24/2/696buck dc–dc converterdc analysisstatic conversion ratiocomponent stressesac rippledesign equations
spellingShingle Delia-Anca Botila
Ioana-Monica Pop-Calimanu
Dan Lascu
Buck Converter with Cubic Static Conversion Ratio
Sensors
buck dc–dc converter
dc analysis
static conversion ratio
component stresses
ac ripple
design equations
title Buck Converter with Cubic Static Conversion Ratio
title_full Buck Converter with Cubic Static Conversion Ratio
title_fullStr Buck Converter with Cubic Static Conversion Ratio
title_full_unstemmed Buck Converter with Cubic Static Conversion Ratio
title_short Buck Converter with Cubic Static Conversion Ratio
title_sort buck converter with cubic static conversion ratio
topic buck dc–dc converter
dc analysis
static conversion ratio
component stresses
ac ripple
design equations
url https://www.mdpi.com/1424-8220/24/2/696
work_keys_str_mv AT deliaancabotila buckconverterwithcubicstaticconversionratio
AT ioanamonicapopcalimanu buckconverterwithcubicstaticconversionratio
AT danlascu buckconverterwithcubicstaticconversionratio