CAJ | 학술논문

论文主要介绍一种用于DC/DC电源芯片内部LDO电路，电路采用双极工艺设计，主要为芯片内部提供稳定电压，同时也可以向外部输出。首先论述了线性稳压电源的基本原理，以此为基础对系统设计进行整体考虑，构建了系统整体架构，并制定了电路的设计指标。然后，利用小信号分析的方法对系统稳定性进行了分析讨论，根据系统稳定性原理，采用电容反馈补偿措施以确保系统稳定可靠。最后，借助Cadence Spectre仿真软件完成仿真验证。实验结果表明，该系统在正常工作时，能得到9 V和6 V两种稳定的输出电压。
논문주요개소일충용우DC/DC전원심편내부LDO전로，전로채용쌍겁공예설계，주요위심편내부제공은정전압，동시야가이향외부수출。수선논술료선성은압전원적기본원리，이차위기출대계통설계진행정체고필，구건료계통정체가구，병제정료전로적설계지표。연후，이용소신호분석적방법대계통은정성진행료분석토론，근거계통은정성원리，채용전용반궤보상조시이학보계통은정가고。최후，차조Cadence Spectre방진연건완성방진험증。실험결과표명，해계통재정상공작시，능득도9 V화6 V량충은정적수출전압。
The thesis analyzes the operation theory of the linear regulator. The architecture is designed. At the same time, the design specification is made. The stability of the system is discussed by analyzing small signal model. And according to the theory of stability,the compensatory method of capacitance feedback is used to ensure the system operate steadily. Finally, all the modules and the whole system have been simulated by the tools of Spectre under the environment of Cadence. Experimental results show that the output voltage of the system designed is about 9 V and 6 V at normal condition.