Zero Voltage Switching High Step-Down Buck Converter With Continuous Output Current

Montazerolghaem, Reza; Adib, Ehsan; Semiromizadeh, Javad; Wheeler, Patrick

Abstract

This paper proposes a high step-down DC-DC converter with a continuous output current. In order to obtain high efficiency, the proposed converter topology ensures zero voltage switching of the MOSFETs and zero current switching of the diodes. One of the advantages of the proposed converter is the continuity of the output current and the maintenance of the soft switching of semiconductor elements throughout a broad power range. Through the use of coupled inductors and series capacitors, the duty cycle of the converter is lengthened. As a result, the peak current of MOSFETs is reduced. Moreover, power is transmitted to the output through both switches, optimizing the converter loss distribution. With the bootstrap method, the converter's switches also are controlled, eliminating the need for gate drivers with isolated power supply. A 200W prototype converter with a 400V input voltage and 24V output voltage has been implemented to validate the theoretical analysis and confirm the topology's increased efficiency.

Citation

Montazerolghaem, R., Adib, E., Semiromizadeh, J., & Wheeler, P. (2023). Zero Voltage Switching High Step-Down Buck Converter With Continuous Output Current. IEEE Transactions on Power Electronics, https://doi.org/10.1109/tpel.2023.3294492

• Journal Article Type: Article
• Acceptance Date: Jun 29, 2023
• Online Publication Date: Jul 12, 2023
• Publication Date: Jul 12, 2023
• Deposit Date: Aug 9, 2023
• Publicly Available Date: Jul 13, 2025
• Journal: IEEE Transactions on Power Electronics
• Print ISSN: 0885-8993
• Electronic ISSN: 1941-0107
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1109/tpel.2023.3294492
• Keywords: Zero voltage switching, Inductors, Voltage, Capacitors, Zero current switching, Topology, Switches, High step-down converter, continuous output current, duty cycle extension, coupled inductor
• Public URL: https://nottingham-repository.worktribe.com/output/23005729
• Publisher URL: https://ieeexplore.ieee.org/document/10180055