https://scholars.lib.ntu.edu.tw/handle/123456789/580754
標題: | Highly Integrated ZVS Flyback Converter ICs with Pulse Transformer to Optimize USB Power Delivery for Fast-Charging Mobile Devices | 作者: | Chang W.-H Chen Y.-M Chen C.-J Wang P.-Y Lin K.-Y Lee C.-C Lo L.-D Lin J.-Y.G Yang T.-Y. CHING-JAN CHEN |
關鍵字: | Efficiency; Electric power transmission; Fast charging (Batteries); Integrated circuits; Optoelectronic devices; Power converters; Pulse transformers; Timing circuits; Constant voltage; External components; Flyback converters; High integration level; High-efficiency; Maximum Efficiency; Programmable power supply; Small signal model; Zero voltage switching | 公開日期: | 2020 | 卷: | 55 | 期: | 12 | 起(迄)頁: | 3189-3199 | 來源出版物: | IEEE Journal of Solid-State Circuits | 摘要: | Flyback converter with USB power delivery is widely used for fast-charging mobile devices. However, conventional solutions have issues such as lower efficiency, higher cost, a large number of external components, and lower loop gain bandwidth. In this article, a high-efficiency zero-voltage switching (ZVS) flyback converter with primary- and secondary-side control ICs is proposed to solve the aforementioned issues with high integration level. The proposed control replaces optocoupler to achieve ZVS and secondary-side-regulation (SSR) by a pulse transformer. The ICs further integrate the USB power delivery (PD) controller and the constant voltage (CV)/constant current (CC) loop compensation to reduce external components. The proposed control and small-signal model are illustrated and verified by the experiment. The control ICs were fabricated in a 180-nm BCD process. The implemented 20-V/3-A/60-W USB PD flyback converter achieved 93.5% maximum efficiency using Si power switches. The feasibility of the proposed converter is verified by a thorough test of programmable power supply (PPS) with various CC/CV levels and load/line transients. ? 1966-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097213807&doi=10.1109%2fJSSC.2020.3021509&partnerID=40&md5=6ac582f543d8f5916a6c5f5231340210 https://scholars.lib.ntu.edu.tw/handle/123456789/580754 |
ISSN: | 00189200 | DOI: | 10.1109/JSSC.2020.3021509 |
顯示於: | 電機工程學系 |
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