低负载调整率微小负电压电源设计  

Design of micro negative voltage power supply with low load regulation

作　　者：赵二蒙 杨少华[2] 严明[2] 李刚[2] 周二瑞 王晶[2] 李斌康 ZHAO Ermeng;YANG Shaohua;YAN Ming;LI Gang;ZHOU Errui;WANG Jing;LI Binkang(School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Northwest Institute of Nuclear Technology,Xi’an 710024,China)

机构地区：[1]西安交通大学电气工程学院,陕西西安710049 [2]西北核技术研究所,陕西西安710024

出　　处：《电子设计工程》2024年第11期151-154,159,共5页Electronic Design Engineering

基　　金：国家自然科学基金项目(12027811)。

摘　　要：针对常见的基于电阻分压的微小负电压电源设计方案具有高负载调整率的固有缺陷,提出一种基于LDO的设计方案。通过将电阻分压方式与LDO方式进行负载调整率实验对比,结果表明后者具有低负载调整率的优势。实验结果显示,在同等静态电流的条件下,且当负载电流为200 mA时,基于电阻分压的微小负电压设计方案的负载调整率为184%;而LDO方式则低至0.5%。该文提出的设计方案对于低负载调整率微小负电压电源的设计具有一定的参考价值。Aiming at the inherent defect of high load regulation rate in the design scheme of micro negative voltage power supply based on resistive voltage dividing circuit,a design scheme based on LDO is proposed in this paper.The experimental comparison of load regulation rate between the voltage dividing circuit and the LDO circuit shows that the latter has the advantage of low load regulation rate.In the condition of equal quiescent current,and when the load current is 200 mA,the experimental results show that the micro negative voltage design scheme based on voltage dividing circuit has the load regulation rate of 184%and the LDO circuit has that of as low as 0.5%.The design scheme proposed in this paper has certain reference value for the design of micro negative voltage power supply with low load regulation.

关 键 词：微小负电压 LDO 电阻分压电路 负载调整率 

分 类 号：TN86[电子电信—信息与通信工程]