A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage Stress
This paper introduces a novel topology called the dual-path step-down converter with auxiliary switches to minimize voltage stress and enable wide voltage conversion ranges. The proposed dual-path step-down converter with auxiliary switches, which uses an inductor and flying capacitor as power conve...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Journal of Low Power Electronics and Applications |
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| Online Access: | https://www.mdpi.com/2079-9268/15/2/29 |
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| _version_ | 1849431671836770304 |
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| author | Xin Wang Zishuo Li Zhen Lin Fanyi Meng |
| author_facet | Xin Wang Zishuo Li Zhen Lin Fanyi Meng |
| author_sort | Xin Wang |
| collection | DOAJ |
| description | This paper introduces a novel topology called the dual-path step-down converter with auxiliary switches to minimize voltage stress and enable wide voltage conversion ranges. The proposed dual-path step-down converter with auxiliary switches, which uses an inductor and flying capacitor as power conversion components, helps to reduce the voltage stress on the power switches. By adding auxiliary switches, the proposed topology achieves the same voltage conversion ratio range as that of a conventional buck converter. Additionally, soft-start technology is incorporated to reduce the initial inrush current. Furthermore, this paper introduces a system-level design procedure for DC-DC converters. Designed for low-power applications with lithium-ion (Li-ion) batteries, the proposed converter steps down the battery voltage to 1.2 V. With a 380 nH inductor and a 5 µF output capacitor, the converter attains a peak efficiency of 90% under the conditions of 2.7 V to 1.2 V conversion. |
| format | Article |
| id | doaj-art-1cb89f0340c84eb5809d96cf0f0218da |
| institution | Kabale University |
| issn | 2079-9268 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Low Power Electronics and Applications |
| spelling | doaj-art-1cb89f0340c84eb5809d96cf0f0218da2025-08-20T03:27:33ZengMDPI AGJournal of Low Power Electronics and Applications2079-92682025-05-011522910.3390/jlpea15020029A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage StressXin Wang0Zishuo Li1Zhen Lin2Fanyi Meng3The 13th-Research Institute, China Electronics Technology Group Corporation, Shijiazhuang 050051, ChinaSchool of Microelectronics, Tianiin University, Tianjin 300072, ChinaSchool of Microelectronics, Tianiin University, Tianjin 300072, ChinaSchool of Microelectronics, Tianiin University, Tianjin 300072, ChinaThis paper introduces a novel topology called the dual-path step-down converter with auxiliary switches to minimize voltage stress and enable wide voltage conversion ranges. The proposed dual-path step-down converter with auxiliary switches, which uses an inductor and flying capacitor as power conversion components, helps to reduce the voltage stress on the power switches. By adding auxiliary switches, the proposed topology achieves the same voltage conversion ratio range as that of a conventional buck converter. Additionally, soft-start technology is incorporated to reduce the initial inrush current. Furthermore, this paper introduces a system-level design procedure for DC-DC converters. Designed for low-power applications with lithium-ion (Li-ion) batteries, the proposed converter steps down the battery voltage to 1.2 V. With a 380 nH inductor and a 5 µF output capacitor, the converter attains a peak efficiency of 90% under the conditions of 2.7 V to 1.2 V conversion.https://www.mdpi.com/2079-9268/15/2/29low-power systemstep-down converterauxiliary switchhybrid DC-DC converterpower-management ICsoft start function |
| spellingShingle | Xin Wang Zishuo Li Zhen Lin Fanyi Meng A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage Stress Journal of Low Power Electronics and Applications low-power system step-down converter auxiliary switch hybrid DC-DC converter power-management IC soft start function |
| title | A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage Stress |
| title_full | A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage Stress |
| title_fullStr | A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage Stress |
| title_full_unstemmed | A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage Stress |
| title_short | A New Type of DC-DC Buck Converter with Soft Start Function and Reduced Voltage Stress |
| title_sort | new type of dc dc buck converter with soft start function and reduced voltage stress |
| topic | low-power system step-down converter auxiliary switch hybrid DC-DC converter power-management IC soft start function |
| url | https://www.mdpi.com/2079-9268/15/2/29 |
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