Title :
High-efficiency boundary conduction mode tapped-inductor boost LED driver
Author :
Jeong-Il Kang ; Jonghee Han ; Sang-Kyoo Han
Author_Institution :
R&D Office, Visual Display, Samsung Electron. Co., Ltd., Suwon, South Korea
fDate :
Feb. 26 2014-March 1 2014
Abstract :
A high-efficiency boundary conduction mode (BCM) tapped-inductor boost converter for constant output current applications is proposed. Besides the well-known advantages from the BCM operation such as the significantly relieved diode reverse-recovery and switching loss, the proposed converter shows a switching frequency which is insensitive to the output voltage variations. This makes the proposed converter very attractive in small form factor mobile LED driver applications. The circuit is analyzed in detail, and a design guideline is presented. Experimental results from an LED backlight driver prototype for a 14" notebook computer are also presented.
Keywords :
driver circuits; inductors; light emitting diodes; zero current switching; zero voltage switching; BCM operation; LED backlight driver prototype; boundary conduction mode; constant output current; diode reverse-recovery; mobile LED driver; notebook computer; switching loss; tapped-inductor boost LED driver; Light emitting diodes; Magnetic switching; Market research; Stress; Switches; Switching frequency; Topology; LED driver; boundary conduction mode; soft switching; tapped-inductor boost converter;
Conference_Titel :
Industrial Technology (ICIT), 2014 IEEE International Conference on
Conference_Location :
Busan
DOI :
10.1109/ICIT.2014.6894877
