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High Performance BCD Integrated Buck-Boost Converter in an AMOLED Display with Application of Self-Triggering Frequency ModulationKIM, H.   , JEON, S. , CHOI, H. , KIM, N. |
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Author keywords
DC-DC power converters, CMOS integrated circuits, voltage-controlled oscillators, frequency modulation, pulse width modulation
References keywords
display(10), power(8), electronics(8), amoled(8), current(7), converter(6), circuits(5), buck(5), mode(4), letters(4)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2018-08-31
Volume 18, Issue 3, Year 2018, On page(s): 119 - 124
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2018.03016
Web of Science Accession Number: 000442420900016
SCOPUS ID: 85052057831
Abstract
Feedback control for self-triggering frequency modulation is proposed for an integrated buck-boost DC-DC converter in an AMOLED display. The goal is to reduce the ripple noise and transient time during the switching process. The converter uses two control modes: switching frequency modulation (SFM) mode for light load current and pulse width modulation (PWM) mode for heavy load current, which result in high power efficiency over a wide range of load current. The mode is automatically changed according to the load current and triggering pulse. A ring-type voltage controlled oscillator (VCO) is applied to obtain a proper operating frequency in the feedback control circuit by the load-dependent current source. The set and reset pulses are used to limit the switching-on time in the sensing signals with less transient time. The converter was fabricated with 0.35-m BCD (BIPOLAR-CMOS-DMOS) process technology. An experiment shows that the maximum power efficiency is 90 percent over a wide current range of 10-150 mA. Compared to a conventional converter, the proposed converter shows significantly less ripple noise and transient time. |
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[1] Design and Implementation of Single Stage SEPIC Integrated Parallel Ripple Cancellation Method for LED Lighting, MAKKAPATI, S., RAMALINGAM, S., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 4, Volume 22, 2022.
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[2] Design and Development of Modified Hybrid Resonant Converter with Valley-fill for LED Lighting, BALAKRISHNAN, L. P., RAMALINGAM, S., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 4, Volume 23, 2023.
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[3] Comparative Analysis of Different Single Stage PFC Integrated Half Bridge LLC converter for LED Lighting, Makkapati, Sridhar, Ramalingam, Seyezhai, 2022 International Conference on Power, Energy, Control and Transmission Systems (ICPECTS), ISBN 978-1-6654-6275-4, 2022.
Digital Object Identifier: 10.1109/ICPECTS56089.2022.10046963 [CrossRef]
[4] CMOS Integrated PFM DC-DC Converter with Digitally-Controlled Frequency Selector, Yu, Junho, Jeon, Seungki, Choi, Hoyong, Kim, Namsoo, 2019 IEEE 23rd Workshop on Signal and Power Integrity (SPI), ISBN 978-1-5386-8342-2, 2019.
Digital Object Identifier: 10.1109/SaPIW.2019.8781674 [CrossRef]
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.
