Buck Converter with Cubic Static Conversion Ratio †
Abstract
:1. Introduction
- The dc analysis for the ideal converter, together with the semiconductor stresses and ripples calculation;
- The expression of the duty cycle for which a conversion from a given input voltage Vg to a desired output voltage Vo is achieved;
- A comprehensive comparison of the proposed converter with other buck-type topologies, revealing superior features, at least compared to the cubic topologies;
- The continuous conduction mode (CCM) operation conditions for a proper design of the inductors;
- The analysis of the non-ideal converter in the presence of conduction losses with the help of the state-space matrices. The abovementioned, together with the design equations, can be found in Section 2;
- A simulation for validating the theoretical operation of the ideal converter, as well as the experimental results on a 12 V–10 W prototype all confirm the feasibility of the proposed topology. These aspects are presented in Section 3;
2. Materials and Methods
- Input voltage: Vg = 15 V;
- Output voltage: Vo = 12 V;
- Output power: Po = 10 W;
- Switching frequency: fs = 100 kHz.
3. Results
3.1. Simulation Results
3.2. Experimental Results
- Case 1: different values of the duty cycle and constant output resistor value;
- Case 2: different resistor values while keeping a constant output voltage.
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameter | Classical [1] | Cubic [36] | Stacked [24] | QBC3 [25] | Quadratic [20] | Single Switch [26] | Semi-Quadratic [19] | Proposed |
---|---|---|---|---|---|---|---|---|
Total no. of components | 4 | 13 | 12 | 8 | 9 | 8 | 11 | 13 |
No. of transistors | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
No. of diodes | 1 | 5 | 3 | 3 | 3 | 2 | 4 | 5 |
System order | 2 | 6 | 8 | 4 | 4 | 5 | 5 | 6 |
Static Conversion Ratio (M) | ||||||||
Transistor dc current stress | ||||||||
Transistor voltage stress | ||||||||
Maximum diode dc current stress | ||||||||
Maximum diode voltage stress |
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Botila, D.-A.; Pop-Calimanu, I.-M.; Lascu, D. Buck Converter with Cubic Static Conversion Ratio. Sensors 2024, 24, 696. https://doi.org/10.3390/s24020696
Botila D-A, Pop-Calimanu I-M, Lascu D. Buck Converter with Cubic Static Conversion Ratio. Sensors. 2024; 24(2):696. https://doi.org/10.3390/s24020696
Chicago/Turabian StyleBotila, Delia-Anca, Ioana-Monica Pop-Calimanu, and Dan Lascu. 2024. "Buck Converter with Cubic Static Conversion Ratio" Sensors 24, no. 2: 696. https://doi.org/10.3390/s24020696