A Customized AC Hybrid LED Driver With Flicker Reduction for High Nominal Range Applications

Chong，Kwun Hok1; Gao，Yuan2; Mok，Philip K.T.3

2021

10.1109/TCSII.2021.3066416

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS   影响因子和分区

1549-7747

1558-3791

This paper presents a customized ac hybrid LED driver for high nominal range (220-240 VAC) applications using average current control. A fixed offset hysteretic window approach is proposed to reduce the switching frequency variation. In order to enable low-side current sensing, a special substrate connection is presented. The designed LED driver is fabricated with a 0.18-μm, 700-V ultra-high voltage CMOS process. Measurement results show that under 230-VAC, 50 Hz input, the peak efficiency of the customized design is over 94% and the power factor is greater than 0.92 while suppressing the photometric flicker and delivering 17-watt power to the LEDs.

ac-dc average current control. Generators high voltage LED driver hybrid driver Light emitting diodes photometric flicker Power transistors Sensors Switches Voltage control Voltage fluctuations

SCI ; EI

英语

其他

WOS:000645863300016

20211310144613

Switching frequency

Electric Components and Equipment:704 ; Semiconductor Devices and Integrated Circuits:714.2

ENGINEERING

2-s2.0-85103165694

Scopus

1.Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China.
2.School of Microelectronics, Southern University of Science and Technology, Shenzhen, China, and the Engineering Research Center of Integrated Circuits for Next-Generation Communications, Ministry of Education, Southern University of Science and Technology, Shenzhen, China.
3.Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China. (e-mail: eemok@ust.hk)

Chong，Kwun Hok,Gao，Yuan,Mok，Philip K.T.. A Customized AC Hybrid LED Driver With Flicker Reduction for High Nominal Range Applications[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS,2021,68(5):1635-1639.

Chong，Kwun Hok,Gao，Yuan,&Mok，Philip K.T..(2021).A Customized AC Hybrid LED Driver With Flicker Reduction for High Nominal Range Applications.IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS,68(5),1635-1639.

Chong，Kwun Hok,et al."A Customized AC Hybrid LED Driver With Flicker Reduction for High Nominal Range Applications".IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS 68.5(2021):1635-1639.