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...
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Online Access: | https://www.mdpi.com/1996-1073/12/15/2924 |
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doaj-729b585ec1904195be1b75e74de3536f2020-11-24T21:26:59ZengMDPI 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 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Seok-Hyeong Ham Hyung-Jin Choe |
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 |
author_facet |
Seok-Hyeong Ham Hyung-Jin Choe |
author_sort |
Seok-Hyeong Ham |
title |
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_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_sort |
miniature dc-dc boost converter for driving display panel of notebook computer |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2019-07-01 |
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. |
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 |
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1725977070271463424 |