一种输出电压可控的负电荷泵电路设计

李敬有; 王梦梦; 都文和; 韩波; 宋昊洋

doi:10.20193/j.ices2097-4191.2024.0060

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集成电路与嵌入式系统 ›› 2025, Vol. 25 ›› Issue (2) : 82-87. DOI: 10.20193/j.ices2097-4191.2024.0060

研究论文

一种输出电压可控的负电荷泵电路设计

李敬有 ¹ ,
王梦梦 ²^,^* ,
都文和 ² ,
韩波 ² ,
宋昊洋 ²

作者信息 +

Negative charge pump circuit design with controllable output voltage

LI Jingyou ¹ ,
WANG Mengmeng ²^,^* ,
DU Wenhe ² ,
HAN Bo ² ,
SONG Haoyang ²

Author information +

文章历史 +

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0.18 μm CMOS工艺下完成。仿真结果表明,在输入电流为100 μA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。

Abstract

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 0.18 μm CMOS process. The simulation results show that with an input current of 100 μA, 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.

导出引用

李敬有, 王梦梦, 都文和, 等. 一种输出电压可控的负电荷泵电路设计[J]. 集成电路与嵌入式系统. 2025, 25(2): 82-87 https://doi.org/10.20193/j.ices2097-4191.2024.0060

LI Jingyou, WANG Mengmeng, DU Wenhe, et al. Negative charge pump circuit design with controllable output voltage[J]. Integrated Circuits and Embedded Systems. 2025, 25(2): 82-87 https://doi.org/10.20193/j.ices2097-4191.2024.0060

中图分类号： TN43 (半导体集成电路(固体电路))

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