一种输出电压可控的负电荷泵电路设计  

Negative charge pump circuit design with controllable output voltage

作　　者：李敬有 王梦梦 都文和[2] 韩波 宋昊洋 LI Jingyou;WANG Mengmeng;DU Wenhe;HAN Bo;SONG Haoyang(School of Computer and Control Engineering,Qiqihar University,Qiqihar 161006,China;School of Communication and Electronic Engineering,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学计算机与控制工程学院,齐齐哈尔161006 [2]齐齐哈尔大学通信与电子工程学院,齐齐哈尔161006

出　　处：《集成电路与嵌入式系统》2025年第2期82-87,共6页Integrated Circuits and Embedded Systems

基　　金：国家自然科学基金面上项目(42271409);黑龙江省教育厅基本科研业务专项(145209313)。

摘　　要：为了解决电荷泵输出电压不可调的问题,设计了一种输出电压可控的电荷泵电路,该电路由高频振荡电路、负压产生电路、基准电路和反馈模块组成。与传统的电荷泵相比,输出电压更灵活,输出电压波纹更小,整体电路在东部0.18μm CMOS工艺下完成。仿真结果表明,在输入电流为100μA下,室温时,输出电压波纹在3 mV以内。在-40~125℃范围内,工艺角输出波纹在5 mV以内。该电荷泵电路在输出电压为-3~0 V工作稳定,已应用到轨对轨运放项目中。To address the problem of non-adjustable output voltage in the charge pump,a charge pump circuit with controllable output voltage is designed.This circuit is composed of a high-frequency oscillation circuit,a negative voltage generating circuit,a reference circuit and a feedback module.Compared with traditional charge pumps,it exhibits greater flexibility in output voltage and a smaller output voltage ripple.The overall circuit is based on Dongbu HiTek 0.18μm CMOS process.The simulation results show that with an input current of 100μA,the output voltage ripple is within 3 mV at room temperature.Over the range from-40℃to 125℃,the process angle output ripple is within 5 mV.The charge pump circuit operates stably at the output voltage of-3~0 V,and it has been applied to the rail-to-rail operational amplifier projects.

关 键 词：电荷泵 比较器 振荡器 电荷共享 数字修调技术 

分 类 号：TN43[电子电信—微电子学与固体电子学]