机构地区: 中国科学院深圳先进技术研究院生物医学与健康工程研究所
出 处: 《微电子学》 2013年第1期28-32,36,共6页
摘 要: 通过对全波整流电路的建模,分析了影响全波整流芯片效率的主要因素,在此基础上,设计了一种应用于胶囊机器人的高效全波整流电路。采用SMIC 0.18μm工艺进行流片,芯片面积为450×250(μm2),整流芯片工作于2.8MHz。测试结果表明,在驱动12mA负载电流时,电压传输效率高达88%。 Modeling of a full-wave rectifier was made,and major factors affecting efficiency of full-wave rectifier IC was analyzed.Based on the modeling and analysis,a high efficiency full-wave rectifier was designed for wireless power transmission of endoscopic capsule robot.Comparator controlled switches were used to minimize rectifier dropout voltage.Implemented in SMIC's 0.18 μm CMOS high voltage process,the full-wave rectifier occupied a chip area of 150×250(μm2).Test results showed that the proposed rectifier chip,which operated at 2.8 MHz,achieved a voltage transmission efficiency up to 88% for a load current of 12 mA.
领 域: [电子电信]