一种适用于-55~125℃的双极工艺带隙基准电压源  

A bipolar process bandgap voltage reference for-55~125℃

作　　者：黄东 胡彤 刘丹 刘伟 苗瑞霞 HUANG Dong;HU Tong;LIU Dan;LIU Wei;MIAO Ruixia(School of Electronic Engineering,Xi'an University of Posts & Telecommunications,Xi'an 710121,China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121

出　　处：《西安邮电大学学报》2020年第3期50-54,共5页Journal of Xi’an University of Posts and Telecommunications

基　　金：陕西省自然科学基础研究计划项目(2020JM-583);陕西省重点研发计划项目(2020GY-040);陕西省教育厅科研计划项目(18JK0714)。

摘　　要：提出一种采用双极工艺,适用于-55~125℃的带隙基准电压电源设计方案。在经典Brokaw带隙结构的基础上,核心电路部分采用共源共栅电流镜方案,以降低三极管基极电流对电流匹配及整体电路的影响。通过增加冗余管补偿三极管集电极-衬底反偏二极管漏电流,以避免电流失配。高温补偿电路部分中利用电阻将补偿电压叠加到经过一阶补偿的基准电压电路上,以降低温度系数,提高基准温度稳定性。仿真结果表明,在3.5~40 V电源电压及-55~125℃温度范围内,提出的基准电路输出电压为1.23 V,温度系数为18.6 ppm·℃^-1,线性调整率为1.9×10-7,在频率小于100 Hz范围内电源抑制比低于135 dB。A design scheme of bandgap voltage reference power supply with bipolar technology and suitable for-55~125℃is proposed.In this design,based on the classic Brocaw bandgap reference source structure,a cascode current mirror scheme is adopted in the core circuit to reduce the influence of the transistor base current on the current matching and the overall circuit.The leakage current of the triode collector-substrate reverse-biased diodes is compensated by the remaining tube to avoid current mismatch.For the high temperature compensation circuit part,the compensation voltage is superimposed on the first-order compensated reference voltage through a resistor to reduce the temperature coefficient and improve the stability of the reference temperature.Simulation results show that the output voltage of the proposed reference circuit is 1.23 V,the temperature coefficient is 18.6 ppm·℃^-1,and the linear adjustment rate is 1.9×10-7 in the range of 3.5~40 V power supply voltage and-55~125℃temperature.The power supply rejection ratio is lower than 135 dB in the range of less than 100 Hz.

关 键 词：带隙电压基准 高温补偿 电流镜 

分 类 号：TN431[电子电信—微电子学与固体电子学]