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

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电子与封装 ›› 2021, Vol. 21 ›› Issue (12): 0 . doi: 10.16257/j.cnki.1681-1070.2021.1214

• 电路设计 •    下一篇

用于GaN HEMT栅驱动芯片的高精度欠压保护电路*

陈恒江1;潘福跃2;周德金3,4;何宁业5;陈珍海2,4,5   

  1. 1. 无锡中微爱芯电子有限公司,江苏 无锡 214035;2. 中科芯集成电路有限公司,江苏 无锡 214072;3. 复旦大学微电子学院,上海 200443;4. 清华大学无锡应用技术研究院,江苏 无锡 214072;5. 黄山学院智能微系统安徽省工程技术研究中心,安徽 黄山 245041
  • 收稿日期:2021-06-17 出版日期:2021-12-28 发布日期:2021-09-18
  • 作者简介:陈恒江(1978—),男,江苏徐州人,本科毕业于西安电子科技大学电子工程专业,主要从事集成电路设计工作。

High Precision Under-Voltage ProtectionCircuit for GaN HEMT Gate Driver Circuit

CHEN Hengjiang1, PAN Fuyue2, ZHOU Dejin3,4, HE Ningye5, CHEN Zhenhai2,4,5   

  1. 1. Wuxi I-Core Electronics Co.,Ltd., Wuxi 214035, China; 2. China KeySystem &Integrated Circuit Co., Ltd., Wuxi 214072, China; 3.School of Microelectronics,Fudan University, Shanghai 200443, China; 4.Wuxi Research Institute of AppliedTechnologies Tsinghua University, Wuxi214072, China; 5. Huangshan University, Engineering Technology Research Center of IntelligentMicrosystems, Huangshan 245041, China
  • Received:2021-06-17 Online:2021-12-28 Published:2021-09-18

摘要: 设计了一种用于GaN HEMT器件栅驱动芯片的高精度欠压保护电路,能提供快速响应的高精度阈值电压。该电路一方面采用宽电压摆幅和快速响应的两级比较器电路,提高处理速度;另一方面,输出整形电路采用RC低通滤波和两级施密特触发器组合滤波,以滤除高频噪声的影响,产生稳定可靠的欠压保护输出信号。基于0.18 μm BCD工艺,完成了电路设计验证,仿真结果显示电路功能正确,可满足GaN HEMT器件栅驱动芯片应用要求。

关键词: 欠压保护, 比较器, 高精度

Abstract: A high precision under-voltage protection circuit for GaN HEMT device gate driver is designed, which will provide high precision threshold voltage with fast response. On the one hand, a two-stage comparator circuit with wide voltage swing and fast response is adopted to improve processing speed. On the other hand, the RC low-pass filtering and two-stage Schmidt trigger combined filtering is used in output shaping circuit to filter out the influence of high frequency noise, and finally to generate the reliable under-voltage protection output signal. The circuit is designed and verified on 0.18 μm BCD process. The simulation results show that the circuit function is correct, which can meet the requirements of GaN HEMT device gate driver.

Key words: under-voltageprotectioncircuit, comparator, highprecision

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