Line-frequency dual input-voltage-level LED driver

Author

Tsorng-Juu Liang ; Jyun-Peng Wu ; Wei-Ching Tseng ; Po-Yen Lin ; Sheng-Ju Chen

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2015

fDate

15-19 March 2015

Firstpage

890

Lastpage

895

Abstract

In this paper, a line-frequency dual input-voltage-level LED driver is proposed. The conventional AC LED topologies are operated with single input voltage level, which cannot be suitable for both two major utility voltage levels of 110 V and 220 V. The proposed LED driver utilizes the automatic parallel/series switching mechanism to achieve the compatibility with the input voltages of 110 V and 220 V. Since the LED driver possesses the current-limiting mechanism, it can prevent LEDs from overcurrent no matter what the input voltage is. Finally, the prototype circuit of line-frequency dual input-voltage-level LED driver is built to verify the performances.

Keywords

current limiters; driver circuits; light emitting diodes; voltage dividers; automatic parallel-series switching mechanism; current-limiting mechanism; line-frequency dual input-voltage-level LED driver; major utility voltage levels; overcurrent; voltage 110 V; voltage 220 V; Capacitors; Light emitting diodes; MOSFET; Reactive power; Resistors; Switches; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE

Conference_Location

Charlotte, NC

Type

conf

DOI

10.1109/APEC.2015.7104454

Filename

7104454