低功耗高效率升压型电荷泵电路设计  

Design of boost charge pump circuit with low power and high efficiency

作　　者：丁雨彤 夏晓娟 易磊[1,2] 庄玉成 DING Yutong;XIA Xiaojuan;YI Lei;ZHUANG Yucheng(College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;National and Local Joint Engineering Laboratory for RF Integration and Micro-Assembly Technology,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]南京邮电大学电子与光学工程学院、微电子学院,江苏南京210023 [2]南京邮电大学射频集成与微组装技术国家地方联合工程实验室,江苏南京210023

出　　处：《南京邮电大学学报（自然科学版）》2020年第3期59-65,共7页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

摘　　要：设计了一种基于PFM调制模式的低功耗高效率升压电荷泵。电路采用耗尽基准减小静态电流,通过PFM控制方式,减小开关管动态损耗。为进一步提高转换效率,采用动态衬底选择电路,抑制寄生三极管效应,同时提出一种新的非交叠时钟产生电路,避免造成电源到输出端或者到地的通路。芯片测试结果表明,电路静态消耗电流为35μA,电源转换效率达到90%。A boost charge pump circuit based on Pulse Frequency Modulation(PFM)with low power consumption and high efficiency is designed.The quiescent current is scaled down via depletion reference and the switching loss is reduced by PFM control mode.To further improve the voltage pumping efficiency,the parasitical triode effect is suppressed by using a dynamic control to both the charge transfer switches and the MOSFET body voltages.Meanwhile,a novel non-overlapping clock generation circuit is designed to avoid current path from power to output or ground.Experimental results of the charge pump system present that the quiescent current is 35μA and the power efficiency is 90%.

关 键 词：耗尽基准 寄生三极管效应 脉冲频率调制 非交叠时钟 

分 类 号：TN432[电子电信—微电子学与固体电子学]