2023-04-03T11:43:58+08:002023-04-03|新闻与活动, 活动信息|

The Distinguished Lecture on “High-Efficiency LED Drivers for Automotive Applications” will take place as follows:

Date: 11 April 2023 (Tuesday)

Time: 10:00am – 11:30am

Venue: To be held online via Zoom (https://umac.zoom.us/j/99361705213?pwd=eXdheWtGQ0l1TldtY2ZpZHpIR2VYQT09)



The speaker is:

Prof. LEE Hoi, Professor, The University of Texas at Dallas


The Lecture is:

High-Efficiency LED Drivers for Automotive Applications



High-brightness LED lighting is a key technology in automotive vehicles. Switching converter based LED drivers are commonly adopted to deliver current through LEDs, and thus obtaining high efficiency in these LED drivers is crucial. However, wide input voltage range and high-frequency operation in the automotive environment significantly limit the power efficiency of these LED drivers due to the dominant switching power loss. To address the above issue, high-frequency soft switching has recently emerged. This presentation will first review common converter topologies and their loss limitations for automotive LED drivers. Various soft-switching schemes and their circuit implementations for the half-bridged LED drivers will then be discussed. The design of the ZVS gate drivers and level shifters to enable high-frequency soft switching in the LED drivers over a wide input range will also be presented.



Prof. LEE Hoi received the B.Eng., M.Phil., and Ph.D. degrees in Electrical and Electronic Engineering from the Hong Kong University of Science and Technology in 1998, 2000, and 2004, respectively. Since Jan. 2005, he has been a faculty member of the Department of Electrical and Computer Engineering in the University of Texas at Dallas, Richardson, TX, where he is a Full Professor. His current research interests include power management integrated circuits for LED lighting, automotive and computing systems; soft-switching converters and their control methodologies; hybrid DC-DC converters for high-conversion-ratio applications; and wireless power and energy-harvesting technologies. Prof. Lee was the Conference Chair of the 62nd IEEE International Midwest Symposium on Circuits and Systems, Dallas TX in 2019. He served as a TPC member of the ISSCC from 2016 to 2021, and was the Chair and Co-Chair of the Power Management Technical Committee in the CICC from 2012 to 2015. He has authored or coauthored over 130 peer-reviewed IEEE journal and conference papers. He received NSF CAREER Award in 2011.


For more details, kindly find the event poster, abstract and bio.