An Integrated Power Management Unit for a Battery-Operated Wireless Endoscopic System  

一种用于电池供电的无线内视镜系统的片上集成的电源管理单元(英文)

作　　者：陈新凯[1] 姜汉钧[2] 王志华[2] 

机构地区：[1]清华大学电子工程系,北京100084 [2]清华大学微电子研究所,北京100084

出　　处：《Journal of Semiconductors》2008年第11期2245-2251,共7页半导体学报（英文版）

基　　金：the National Natural Science Foundation of China(No.60475018)~~

摘　　要：This paper presents an integrated power management unit （PMU） for a battery-operated wireless endoscopic system. This PMU is integrated with a baseband chip in standard 0.18μm CMOS technology,promising low cost, ease in PCB design, and a minimum in system size. The optimized power supply architecture is derived from comparison. Circuits of sub blocks are presented in detail. As a result, only five small off-chip capacitances are required by PMU with an overall quiet current consumption of less than 100μA. Moreover,a digital calibration method is adopted to alleviate the effect of process variation. The achieved performance is also demonstrated with corresponding measurement results.介绍了一种应用于电池供电的无线内视镜系统的片上集成的电源管理单元.该电源管理单元使用标准的0.18μm CMOS工艺与基带处理芯片集成在一起.电源管理单元的集成减小了系统成本,方便了PCB的设计并缩小了系统的尺寸.通过比较得到了优化的电源结构方案,并描述了该方案中子模块电路的具体实现.整个电源管理单元只需5个片外小电容元件,其整体消耗的静态电流小于100μA.此外,该方案还采用数字校准的方法以克服工艺偏差对电路性能的影响.本文还描述了电路所达到的性能指标及相应的测试结果.

关 键 词：power management unit LDO charge pump oscillator integration wireless endoscopic system 

分 类 号：TN492[电子电信—微电子学与固体电子学]