电子元件与材料Issue(1)：88-91,95,5.DOI:10.14106/j.cnki.1001-2028.2015.01.022
一种基于降压DC-DC转换器的高性能误差放大器设计
Design of a high-performance error-amplifier for Buck DC-DC converter
赵少敏 1韩雨衡 1张国俊 1陆定红1
作者信息
- 1. 电子科技大学 电子薄膜与集成器件国家重点实验室，四川 成都 610054
- 折叠
摘要
Abstract
Combined with the working principle of Buck DC-DC converter, a high performance error-amplifier circuit, which met the system requirements, was presented. The input stage of the proposed error amplifier used bias current cancellation structure to reduce the impact on the reference voltage. By inducing positive feedback structure and negative feedback resistor, performance of the circuit were improved remarkably. The error-amplifier was designed and implemented by CSMC 0.5μm BCD process. The simulation results show that thetransconductance is 1.5 mS, the input common-mode voltage can begin from zero, the common mode rejection ratio is 106 dB, input offset voltage is 208.3μV, the power consumption is 100μW, which proves a good performance of the amplifier.关键词
误差放大器/差分运放/DC-DC转换器/反馈/偏置电流消除结构/BCD工艺Key words
error-amplifier/differential amplifier/DC-DC converter/feedback/bias current cancellation structure/BCD process分类
信息技术与安全科学引用本文复制引用
赵少敏,韩雨衡,张国俊,陆定红..一种基于降压DC-DC转换器的高性能误差放大器设计[J].电子元件与材料,2015,(1):88-91,95,5.
