一种基于电流偏置的新型上电复位电路设计

doi:10.16257/j.cnki.1681-1070.2025.0031

电子与封装 ›› 2025, Vol. 25 ›› Issue (4): 040301 . doi: 10.16257/j.cnki.1681-1070.2025.0031

一种基于电流偏置的新型上电复位电路设计

许家欣，钱逸

南京邮电大学集成电路科学与工程学院，南京? 210023

出版日期:2025-04-29 发布日期:2025-04-29
作者简介:许家欣（2000—），男，江苏无锡人，硕士研究生，主要研究方向为模拟集成电路设计。

Design of a Novel Power-on Reset Circuit Based on Current Biasing

XU Jiaxin, QIAN Yi

Schoolof Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunication, Nanjing 210023, China

Online:2025-04-29 Published:2025-04-29

摘要/Abstract

摘要： 随着数字电路模块的复杂程度越来越高，上电复位（POR）电路对于在启动时初始化数字逻辑到已知的状态至关重要。基于0.18 μm工艺设计了一种新型POR电路，该POR电路基于带启动电路的电流偏置结构，电源上电更稳定，而且增加了使能端，使电路可用于低功耗场景，此外，电流镜技术和分压电阻的运用，不仅使电源阈值调节简单，还增加了迟滞，降低了输出回路的电源噪声。

关键词: 上电复位电路, 电流比较器, 分压电阻, 迟滞

Abstract: With the increasing complexity of digital circuit modules, power-on reset (POR) circuits are essential to initialize the digital logic to a known state at startup. A novel POR circuit is designed based on 0.18 μm process. The POR circuit is based on a current-biased structure with a startup circuit, which provides a more stable power supply power-up, and the addition of an enabling terminal allows the circuit to be used in low-power scenarios. In addition, the use of current-mirror technology and voltage-dividing resistors not only makes the power-threshold adjustment simple, but also increases hysteresis and reduces the power supply noise of the output loop.

Key words: power-on reset circuit, current comparator, voltage-dividing resistor, hysteresis

中图分类号:

TN402

许家欣，钱逸. 一种基于电流偏置的新型上电复位电路设计[J]. 电子与封装, 2025, 25(4): 040301 .

XU Jiaxin, QIAN Yi. Design of a Novel Power-on Reset Circuit Based on Current Biasing[J]. Electronics & Packaging, 2025, 25(4): 040301 .

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中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

一种基于电流偏置的新型上电复位电路设计

Design of a Novel Power-on Reset Circuit Based on Current Biasing

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