Power losses analysis of multiphase DC-DC buck converter using OrCAD PSpice software

Abdul Ghani, Ahmad Faiz Hilmi and Poad, Mhd Hazwaj and Abu Bakar, Afarulrazi and Norazman, Siti Nuraini (2022) Power losses analysis of multiphase DC-DC buck converter using OrCAD PSpice software. Bulletin of Electrical Engineering and Informatics, 11 (3). pp. 1723-1734. ISSN 2302-9285

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DC-DC buck converters have wide applications in portable electronic devices, battery chargers, and telecommunications. However, single-phase DC-DC buck converters have some drawbacks, especially in high current applications, where the increase in the size of the inductor will increase power losses, which significantly affects the overall efficiency of the converter. The multiphase configuration offers several advantages, such as reduction in output voltage ripple, input current ripple, conduction loss, and the physical size of the hardware. This paper presents an analysis of the power losses of the multiphase DC-DC buck converter with output power ranging between 50 watts to 250 watts. To verify the effectiveness of the multiphase converter, performance analysis was done using OrCAD PSpice software, where the number of phases was limited to five phases. This paper focused on power losses in the converter, namely conduction losses in diodes and MOSFETs, switching loss in MOSFETs, as well as losses in the inductor and capacitor. The relationship between the number of phases and factors of switching frequency, output, and the components’ internal resistance was also highlighted and discussed in detail.

Item Type: Article
Uncontrolled Keywords: Buck converter; multiphase; power losses.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Depositing User: Mr. Abdul Rahim Mat Radzuan
Date Deposited: 06 Oct 2022 03:27
Last Modified: 06 Oct 2022 03:27
URI: http://eprints.uthm.edu.my/id/eprint/7776

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