Buck-Boost转换器总剂量辐射效应分析与抗辐射加固设计方法  

Total ionizing dose effect analysis and radiation hardening design method of Buck-Boost converter

作　　者：郭仲杰 卢沪 刘楠 吴龙胜 GUO Zhongjie;LU Hu;LIU Nan;WU Longsheng(School of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China;School of Microelectronics,Xidian University,Xi’an 710071,China)

机构地区：[1]西安理工大学自动化与信息工程学院,西安710048 [2]西安电子科技大学微电子学院,西安710071

出　　处：《北京航空航天大学学报》2025年第2期389-396,共8页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金(62171367);陕西省重点研发计划(2021GY-060);陕西省创新能力支撑计划(2022TD-39);西安理工大学校企协同基金(252062109)。

摘　　要：DC-DC转换器在总剂量辐射环境下会带来输出电压漂移、线性调整率与负载调整率下降等影响,使得电路的输出稳定性能变差。针对传统基于工艺与版图的抗总剂量辐射效应加固方法会带来成本较高、版图面积过大及普适性较差等问题,提出一种实时监测与自适应加固并行的抗总剂量辐射效应加固设计方法,可脱离工艺实现在电路级层面的总剂量辐射效应加固,提升了Buck-Boost转换器的抗总剂量辐射能力。基于0.18μm BCD工艺对所提方法进行具体电路设计与物理实现验证,结果表明:在剂量值为2000 Gy(Si)的条件下,可将系统增益的下降率从19.26%补偿至6.65%,输出电压漂移率从0.0663%改善至0.0074%,负载调整率和线性调整率分别降低2.15%/A和0.0389%/V,为电路与系统级的抗总剂量辐射效应加固设计提供了一种新方法。DC-DC converter in the total dose radiation environment will mainly bring the output voltage drift,linear adjustment rate load adjustment rate decline and other effects so that the output stability performance of the circuit deteriorates.In order to address the issues with the conventional total ionizing dose effect hardening method that stem from process and layout,including high cost,large layout area,and poor universality,this paper suggests a total ionizing dose effect hardening design method with parallel monitoring and hardening.This method can accomplish total ionizing dose effect hardening at the circuit level without the need for a process.The anti-total dose capability of the Buck-Boost converter is improved.The circuit design and physical implementation of the proposed method are verified based on the 0.18μm BCD process.According to the findings,with a dosage of 2000 Gy(Si),it is possible to enhance the output voltage shift rate from 0.0663%to 0.0074%and compensate the system gain drop rate from 19.26%to 6.65%.The load adjustment rate and linear adjustment rate are reduced by 2.15%/A and 0.0389%/V,respectively,which provides a new idea for the design of total ionizing dose effect hardening at the circuit and system level.

关 键 词：总剂量辐射效应 加固设计 Buck-Boost转换器 误差放大器 实时监测 

分 类 号：TN492[电子电信—微电子学与固体电子学]