基于自动检测与动态补偿的DC-DC转换器抗单粒子加固设计方法  

Method of Single Event Effects Radiation Hardened for DC-DC Converter Based on Automatic Detection and Dynamic Compensation

作　　者：郭仲杰 刘楠 卢沪 刘申 曹喜涛 GUO Zhongjie;LIU Nan;LU Hu;LIU Shen;CAO Xitao(School of Automation and Information Engineering,Xi’an University of Technology,Xi’an,Shaanxi 710048,China)

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《北京理工大学学报》2022年第9期983-990,共8页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金面上资助项目(62171367);陕西省重点研发计划项目(2021GY-060);陕西省创新能力支撑计划项目(2022TD-39)。

摘　　要：以Boost型转换器为例进行了DC-DC转换器对单粒子瞬态的敏感性分析,研究了单粒子瞬态对环路响应的影响.基于对环路敏感节点的分析,采用电路与系统级的片上自动检测方法及时获取单粒子能量,进而转化为动态补偿的参数,实现了对不同单粒子能量下的瞬态特性改善.基于商用0.18μm BCD工艺,完成了一款高可靠Boost型转换器电路设计、版图设计与物理验证.实验结果显示,输入电压为2.9~4.5 V,输出电压为5.9~7.9 V,负载能力为55 mA,系统在单粒子瞬态效应的作用下,输出电压的最大波动不超过1 mV,抑制能力达到86.07%以上,能够抵抗LET=100 MeV·cm^(2)/mg的单粒子轰击.Taking boost converter as an example, the sensitivity of DC-DC converter to single event transient was analyzed, and the influence of single event transient on loop response was studied. Based on the analysis of the sensitive nodes of the loop, an on-chip automatic detection method at the circuit and system level was proposed to obtain the single particle energy in time, and then transform it into the parameters of dynamic compensation, so as to improve the transient characteristics under different single particle energy. Based on the commercial 0.18 μm BCD process, the circuit design, layout design and physical verification of a highly reliable Boost converter were completed. The experiment results show that, when a system arranged with input voltage 2.9~4.5 V, output voltage 5.9~7.9 V and load ability 55 mA, under the action of single event transient effect,its maximum fluctuation of the output voltage does not exceed 1 mV, the suppression ability can reach more than 86.07%, and can resist LET = 100 MeV·cm^(2)/mg single particle bombardment.

关 键 词：DC-DC转换器 模拟单粒子瞬态效应 误差放大器 抗辐射加固设计 

分 类 号：TN492[电子电信—微电子学与固体电子学]