厦门大学学报（自然科学版）2011，Vol.50Issue(5)：838-842,5.
一种带输出电压反馈的恒流驱动IC设计
An IC Design of Constant Current Driver with Voltage Output Feedback
摘要
Abstract
To the LED drivers applied in the field of LCD backlight.the traditional design of the DC-DC circuit is based on the maximum load to design the DC-DC power supplies. When there are deviations in the load.the system inefficient and fever, which lead to additional power loss. According to the deficiencies that traditional circuit can not dynamically adjust output voltage.a new type of LED driver design is introduced. The chip achieves a high grayscale display requirement, with constant current drive mode used and controlled by PWM digital module. The chip also provides a feedback current output which can be cascaded,with DC-DC converters, regulate DC-DC output voltage to ensure constant-current output voltage and restrict the power consumption increasing. The chip testing meets the design requirements,performance stable.关键词
互补金属氧化物半导体/电视背光/DC-DC/boostKey words
CMOS/TV backlight/DC-DC/boost分类
信息技术与安全科学引用本文复制引用
洪明,冯勇建,傅科成..一种带输出电压反馈的恒流驱动IC设计[J].厦门大学学报（自然科学版）,2011,50(5):838-842,5.基金项目
福建省重大科技项目(2010H6025) （2010H6025）
