LED driver IC with an adaptive slope compensation technique

Author

Jeong, Wooju ; Park, Jungeui ; Choi, Jungsoo ; Lee, Seok ; Lee, Junsang ; Yoon, Jayang ; Kim, Jaehoon ; Cheon, Jeongin ; Choi, Joongho

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Seoul, Seoul, South Korea

fYear

2010

fDate

21-23 June 2010

Firstpage

709

Lastpage

712

Abstract

In this paper, an adaptive slope compensation circuit is proposed that can be applied for the current-controlled DC-DC converter. In order to maintain stability, the negative-slope compensation should be used for this converter with duty ratio higher than 0.5. Fixed value of this slope results in the limited operating range. The proposed adaptive slope compensation is designed that can be suitable for wide range of input and output voltages and incorporated into the DC-DC boost converter for LED driver applications. Operations are verified through measurement results of circuit implementation in a 0.35-μm BCD technology.

Keywords

DC-DC power convertors; compensation; driver circuits; integrated circuits; light emitting diodes; BCD technology; LED driver IC; adaptive slope compensation circuit technique; current-controlled DC-DC converter; duty ratio; negative-slope compensation; size 0.35 mum; stability; Circuits; DC-DC power converters; Inductors; Light emitting diodes; Power generation; Pulse generation; Pulse width modulation; Switches; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Green Circuits and Systems (ICGCS), 2010 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-6876-8

Electronic_ISBN

978-1-4244-6877-5

Type

conf

DOI

10.1109/ICGCS.2010.5542970

Filename

5542970