A Synchronous Boot-strapping Technique with Increased On-time and Improved Efficiency for High-side Gate-drive Power Delivery
编号:76 访问权限:仅限参会人 更新:2021-08-16 06:56:20 浏览:287次 口头报告

报告开始:2021年08月27日 11:00(Asia/Shanghai)

报告时间:15min

所在会场:[Room2] Oral Session 2 [S5&S6] WBG Device Design and Gate Drivers

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摘要
In this work we demonstrate a synchronous boot-strap power delivery scheme applied to a high level count GaN-based flying capacitor multi-level (FCML) converter. The proposed approach is well suited for high-frequency operation as it eliminates conventional boot-strap diodes and allows for precise on-time control for a maximized conduction duration. Importantly, we note the synchronous boot-strapping scheme’s capability for bi-directional energy transfer: Gate driver power can be injected from either a ground referenced supply, a high-side line referenced supply, or both simultaneously for further reduced voltage droop. A discrete 6-level FCML prototype switching at 500 kHz validates this approach with a measured maximum deviation in supply voltage of 156 mV throughout all 10 series stacked gate drivers for converter duty ratios spanning 15-85%. Subsequently the need for local regulation throughout the gate-drive chain is eliminated, which in turn improves efficiency, simplifies design, and reduces cost.
关键词
bootstrap method,minimal droop
报告人
Nathan Miles Ellis
Post-doctoral University of California Berkeley

Nathan Miles Ellis received the B.S. degree in Electrical and Electronic Engineering from the University College Cork, Ireland, in 2013, and the M.S. and Ph.D degrees in Electrical and Computer Engineering from the University of California, Davis in 2017 and 2020 respectively. During this time he was funded in part by both Texas Instruments and the U.S. Dept. Of Education in recognition of research excellence in areas of national need (GAANN). In 2017 UC Davis’ Industrial Affiliates named him Best Graduate Researcher, and at the 2020 International Solid-State Circuits Conference (ISSCC) he received the title of Analog Devices Outstanding Student Designer. His research interests include Mixed Signal Integrated Circuit Design, Energy Harvesting, Renewable Energy Integration, Control, Biomedical Devices, and spans several topics in high performance power converter design, including; Hybridized Switched-Capacitor Power Converters, Multi-Level Converters, Adiabatic Gate-Drives, and a number of related advanced converter techniques. He is currently a Post-Doctoral Researcher at the University of California, Berkeley within the Department of Electrical Engineering and Computer Sciences.

稿件作者
Nathan Miles Ellis University of California Berkeley
Rahul Iyer University of California Berkeley
Robert Pilawa-Podgurski University of California Berkeley
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重要日期
  • 会议日期

    08月25日

    2021

    08月27日

    2021

  • 04月21日 2021

    摘要截稿日期

  • 05月15日 2021

    摘要录用通知日期

  • 06月25日 2021

    终稿截稿日期

  • 08月24日 2021

    报告提交截止日期

  • 08月27日 2021

    注册截止日期

主办单位
IEEE
IEEE ELECTRONIC DEVICE SOCIETY
承办单位
Huazhong University of Science and Technology
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