广西师范大学学报（自然科学版）2017，Vol.35Issue(2)：17-23,7.DOI:10.16088/j.issn.1001-6600.2017.02.003
一种分段补偿带隙基准电压源的设计
The Design of a Piecewise Compensated Bandgap Voltage Reference
摘要
Abstract
For first-order temperature compensation of the reference voltage source is still high temperature coefficient,this paper proposes a design method of piecewise compensation to reduce the temperature drift.A voltage signal following the temperature variation is produced by an amplifier with negative resistance of which gain is sensitive to temperature.Drived by this voltage signal,a PMOS transistor is used to inject or extract electricity current for the reference circuit in three temperature segments as a pattern of piecewise compensation.The simulation results indicate that the reference voltage of circuit only change 0.311 mV and its temperature coefficient is 1.89×10-6 ℃-1 in the temperature range(TR) from-40 ℃ to 125 ℃.Its PSRR is-90 dB at low frequency.When the temperature of the bandgap reference voltage source is at-15 ℃,34 ℃ and 76 ℃,the curvature of the reference voltage to the temperature is 0,and the temperature drift coefficient is lower in the standard process.The study can provide a high precision voltage reference for ADC,linear voltage regulator and DC/DC converter circuit.关键词
温度系数/带隙基准源/电源抑制比/分段补偿Key words
temperature coefficient/bandgap reference/PSRR/piecewise compensation分类
信息技术与安全科学引用本文复制引用
王军,韦笃取..一种分段补偿带隙基准电压源的设计[J].广西师范大学学报（自然科学版）,2017,35(2):17-23,7.基金项目
国家自然科学基金(11562004,61263021) （11562004,61263021）
