现代电子技术2011，Vol.34Issue(3)：176-178,3.
电荷泵型LED驱动器的CMOS误差放大器设计
Design of CMOS Error Amplifier Used in Charge Pump LED Driver
裴树林1
作者信息
- 1. 华南理工大学,电子与信息学院,广东,广州,510640
- 折叠
摘要
Abstract
Based on the analysis of charge pump LED driver, an error amplifier is designed for reducing output voltage ripple and stabilizing output voltage.This error amplifier has a wide voltage range to make LED driver in a high efficiency and low noise operation.The whole circuit is designed using CHRT 0.35μm CMOS MIXED SIGNAL TECHNOLOGY.Simulation results indicate that under the power supply of 2.7～5 V, open-loop voltage gain is about 72 dB, phase margin is about 65°, unity gain bandwidth is about 4.6 MHz, common mode rejection ratio is about 113 dB, and power supply rejection ratio is about 100 dB.关键词
误差放大器/电荷泵/CMRR/LED驱动器/低噪声分类
信息技术与安全科学引用本文复制引用
裴树林..电荷泵型LED驱动器的CMOS误差放大器设计[J].现代电子技术,2011,34(3):176-178,3.
