一种快关断的新型ESD电源箝位电路  

A New Fast Turn-Off ESD Power Clamp Circuit

作　　者：邓志豪 成建兵 李瑛楠 张才荣 周嘉诚 DENG Zhihao;CHENG Jianbing;LI Yingnan;ZHANG Cairong;ZHOU Jiacheng(College of Elec and Optical Engineer.&College of Microelec,Nanjing Univ.of Posts and Telecommun,Nanjing 210023,P.R.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,南京210023

出　　处：《微电子学》2021年第6期889-893,共5页Microelectronics

基　　金：国家自然科学基金资助项目(61274080)。

摘　　要：提出了一种新型电源箝位电路,旨在解决传统电路中存在的泄漏电流大、误触发、低导通时间等问题。该电路通过引入双极晶体管(BJT),利用BJT电流放大作用以降低电容容值,再利用MOS管和串联二极管的反馈作用以调整触发电压,来提升箝位电路的性能。仿真结果表明,该电路可以快速响应ESD事件,并且可以实现快速关断的功能,从而快速泄放电流,避免对内部电路造成损坏。A novel power clamp circuit was proposed, which aimed to solve the problems of large leakage current, false triggering, and low on-time in traditional circuits. This circuit used the current amplification of a bipolar transistor(BJT) to reduce the capacitance value, and the feedback function of a MOS tube and a series diode was used to adjust the trigger voltage. In this way, the performance of the clamp circuit could be improved. The simulation results showed that the circuit could quickly respond to ESD events, and could achieve a fast shutdown function, thereby quickly discharging current and avoiding damage to the internal circuit.

关 键 词：电源箝位电路 误触发 泄漏电流 导通时间 

分 类 号：TN406[电子电信—微电子学与固体电子学]