Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer
This paper proposes a miniature DC-DC boost converter to drive the display panel of a notebook computer. To reduce the size of the circuit, the converter was designed to operate at a switching frequency of 1 MHz. The power conversion efficiency improved using a passive snubber circuit that consisted...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-07-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/12/15/2924 |
| _version_ | 1828152673009926144 |
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| author | Seok-Hyeong Ham Hyung-Jin Choe |
| author_facet | Seok-Hyeong Ham Hyung-Jin Choe |
| author_sort | Seok-Hyeong Ham |
| collection | DOAJ |
| description | This paper proposes a miniature DC-DC boost converter to drive the display panel of a notebook computer. To reduce the size of the circuit, the converter was designed to operate at a switching frequency of 1 MHz. The power conversion efficiency improved using a passive snubber circuit that consisted of one inductor, two capacitors, and two diodes; it reduced the switching losses by lowering the voltage stress of the switch and increased the voltage gain using charge pumping operations. An experimental converter was fabricated at 2.5 cm × 1 cm size using small components, and tested at input voltage 5 V ≤ <i>V<sub>IN</sub></i> ≤ 17.5 V and output current 30 mA ≤ <i>I<sub>O</sub></i> ≤ 150 mA. Compared to existing boost converters, the proposed converter had ~7.8% higher power conversion efficiency over the entire range of <i>V<sub>IN</sub></i> and <i>I<sub>O</sub></i>, only ~50% as much voltage stress of the switch and diodes, and a much lower switch temperature <i>T<sub>SW</sub></i> = 49.5 °C. These results indicate that the proposed converter is a strong candidate for driving the display panel of a notebook computer. |
| first_indexed | 2024-04-11T22:14:45Z |
| format | Article |
| id | doaj.art-729b585ec1904195be1b75e74de3536f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T22:14:45Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-729b585ec1904195be1b75e74de3536f2022-12-22T04:00:27ZengMDPI AGEnergies1996-10732019-07-011215292410.3390/en12152924en12152924Miniature DC-DC Boost Converter for Driving Display Panel of Notebook ComputerSeok-Hyeong Ham0Hyung-Jin Choe1Department of Electrical Engineering, Pohang University of Science and Technology, Pohang, Kyungpook 37673, KoreaDepartment of Electrical Engineering, Tongmyong University, 428 Sinseon-ro, Nam-gu, Busan 48520, KoreaThis paper proposes a miniature DC-DC boost converter to drive the display panel of a notebook computer. To reduce the size of the circuit, the converter was designed to operate at a switching frequency of 1 MHz. The power conversion efficiency improved using a passive snubber circuit that consisted of one inductor, two capacitors, and two diodes; it reduced the switching losses by lowering the voltage stress of the switch and increased the voltage gain using charge pumping operations. An experimental converter was fabricated at 2.5 cm × 1 cm size using small components, and tested at input voltage 5 V ≤ <i>V<sub>IN</sub></i> ≤ 17.5 V and output current 30 mA ≤ <i>I<sub>O</sub></i> ≤ 150 mA. Compared to existing boost converters, the proposed converter had ~7.8% higher power conversion efficiency over the entire range of <i>V<sub>IN</sub></i> and <i>I<sub>O</sub></i>, only ~50% as much voltage stress of the switch and diodes, and a much lower switch temperature <i>T<sub>SW</sub></i> = 49.5 °C. These results indicate that the proposed converter is a strong candidate for driving the display panel of a notebook computer.https://www.mdpi.com/1996-1073/12/15/2924backlightDC-DC converterpassive snubbervoltage stress |
| spellingShingle | Seok-Hyeong Ham Hyung-Jin Choe Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer Energies backlight DC-DC converter passive snubber voltage stress |
| title | Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer |
| title_full | Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer |
| title_fullStr | Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer |
| title_full_unstemmed | Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer |
| title_short | Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer |
| title_sort | miniature dc dc boost converter for driving display panel of notebook computer |
| topic | backlight DC-DC converter passive snubber voltage stress |
| url | https://www.mdpi.com/1996-1073/12/15/2924 |
| work_keys_str_mv | AT seokhyeongham miniaturedcdcboostconverterfordrivingdisplaypanelofnotebookcomputer AT hyungjinchoe miniaturedcdcboostconverterfordrivingdisplaypanelofnotebookcomputer |