基于TDDB的数字隔离器寿命测试系统  

TDDB-based lifespan testing system for digital isolators

作　　者：李梓腾 王进军[1] 陈炫宇 王凯[1] LI Ziteng;WANG Jinjun;CHEN Xuanyu;WANG Kai(School of Electronic Information and Artificial Intelligence,Shaanxi University of Science&Technology,Xi’an 710021,China;Xi’an Xiangteng Microelectronics Technology Co.,Ltd.,Xi’an 710068,China)

机构地区：[1]陕西科技大学电子信息与人工智能学院,陕西西安710021 [2]西安翔腾微电子科技有限公司,陕西西安710068

出　　处：《现代电子技术》2025年第6期39-44,共6页Modern Electronics Technique

基　　金：陕西省教育厅科研计划专项项目:AlGaN/GaN HEMT电力电子器件的优化与性能研究(18JK0103)。

摘　　要：为评估数字隔离器在长期使用过程中的稳定性和寿命,提出一种基于经时击穿(TDDB)的寿命测试系统,通过自动化和多路并行测试来提升测试效率。具体方法包括设计一个支持16路同时进行测试的系统,使用DSP控制程序和上位机软件进行数据处理,并通过增加电压应力来加速老化测试。实验结果表明:该系统能够在检测到失效时立即终止测试,并自动记录失效时间;同时通过模拟工作电压环境,提高了测试结果的可靠性。与传统方法相比,所设计系统显著减少了人工干预,提高了测试效率和可靠性,并且能够提前预警潜在故障,为电气系统的稳定运行提供了有力保障。该研究对于提高数字隔离器的可靠性和寿命,以及保障电气系统的安全运行具有一定的理论和实践意义。In order to evaluate the stability and longevity of digital isolators during long-term usage,a lifespan testing system based on time-dependent dielectric breakdown(TDDB)is proposed,which can enhance testing efficiency by means of automation and multi-channel parallel testing.The specific method includes designing a 16-channel testing system,using DSP control program and PC software for data processing,and accelerating the aging test by increasing the voltage stress.The experimental results show that this system can immediately terminate the test and automatically record the failure time upon detecting a failure,while improving the reliability of testing results by simulating working voltage environments.In comparison with traditional methods,the designed system can significantly reduce manual intervention,enhance testing efficiency and reliability,and can preemptively warn of potential failures,providing strong assurance for the stable operation of electrical systems.This research has a certain theoretical and practical significance for improving the reliability and lifespan of digital isolators and ensuring the safe operation of electrical systems.

关 键 词：数字隔离器 经时击穿 寿命测试 可靠性评估 栅氧化层击穿 回路电流监测 

分 类 号：TN761-34[电子电信—电路与系统]