A Constant Switching Frequency Real-Time Digital Control for ZVS Four-Switch-Buck-Boost Converter
In this article, a constant switching frequency real-time digital control scheme is proposed for the four-switch buck-boost converter. With this control scheme, all the power switches can realize zero-voltage-switching, and the ripple and root-mean-square value of the inductor current can be minimized in the whole voltage and load ranges. Since all the control variables in any operation mode are obtained in real-time with one closed-loop PI controller and simple calculations, the inductor current in each switching cycle is optimized, and smooth operation mode transition and high dynamic response in the step change of load or input voltage is achieved. The effectiveness of the proposed control scheme is verified with a 300 W prototype.
Authors
- Xinbo Ruan (ORCID: https://orcid.org/0000-0002-5351-3032)
- Dongdong Zheng (ORCID: https://orcid.org/0000-0002-7080-2370)
- Fei Yang (ORCID: https://orcid.org/0000-0002-1793-4729)
- Wenyu Guo
- Kai Yao (ORCID: https://orcid.org/0000-0002-4175-0962)
- Ling Gu (ORCID: https://orcid.org/0000-0003-0450-5893)
Institutions
- Nanjing University of Science and Technology (CN)
- Nanjing University of Aeronautics and Astronautics (CN)
Publication Details
- Journal
- IEEE Transactions on Power Electronics
- Published
- 2025-03-06
- DOI
- https://doi.org/10.1109/tpel.2025.3547755
- Citations
- 2
- Primary Topic
- Advanced DC-DC Converters
- Type
- article
- Field-Weighted Citation Impact
- 1.46