Power losses analysis of multiphase DC-DC buck converter using OrCAD PSpice software
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...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Electrical and Electronics Engineers Inc. (ieee)
2022
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/7776/1/J14560_f841416e3de8914ad242e981c3156310.pdf http://eprints.uthm.edu.my/7776/ https://doi.org/10.11591/eei.v11i3.3851 |
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| Summary: | 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. |
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