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Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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A Study on SCR-based Dual Directional ESD Protection Device with High Holding Voltage by Self-Biasing Effect

Self-Biasing 효과로 높은 홀딩 전압을 갖는 SCR 기반 양방향 ESD 보호 소자에 관한 연구

  • Jung, Jang-Han (Dept. of Electronics Engineering, Dankook University) ;
  • Jeong, Seung-Koo (Dept. of Electronics Engineering, Dankook University) ;
  • Koo, Yong-Seo (Dept. of Electronics Engineering, Dankook University)
  • Received : 2022.03.07
  • Accepted : 2022.03.30
  • Published : 2022.03.31
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Abstract

This paper propose a new ESD protection device suitable for 12V class applications by adding a self-biasing structure to an ESD protection device with high holding voltage due to additional parasitic bipolar BJT. To verify the operating principle and electrical characteristics of the proposed device, current density simulation and HBM simulation were performed using Synopsys' TCAD Simulation, and the operation of the additional self-biasing structure was confirmed. As a result of the simulation, it was confirmed that the proposed ESD protection device has a higher level of holding voltage compared to the existing ESD protection device. It is expected to have high area efficiency due to the dual structure and sufficient latch-up immunity in 12V-class applications.

본 논문은 추가 기생 바이폴라 BJT로 인해 높은 홀딩전압을 갖는 ESD 보호소자에 Self-Biasing 구조를 추가하여 12V 급 어플리케이션에 적합한 새로운 ESD 보호소자를 제안한다. 제안된 소자의 동작원리와 전기적 특성 검증을 위해 Synopsys사의 TCAD Simulation을 사용하여 current density simulation과 HBM simulation을 수행하였고 추가된 Self-Biasing 구조 동작을 확인하였다. Simulation 결과 제안된 ESD 보호소자는 기존의 ESD 보호소자와 비교하여 높은 수준의 홀딩전압을 갖는 것을 확인하였고 이는 듀얼구조로 인한 높은 면적효율과 12V급 어플리케이션에서 충분한 래치업 면역 특성을 가질 것으로 기대된다.

Keywords

Acknowledgement

This work was supported by Korea Evaluation Institute of Industrial Technology(KEIT) grant funded by the Ministry of Trade, Industry & Energy (20009739, "Development of Low Noise 3phase BLDC Motor Drive SoC for Electric Vehicles with Power Switch and Hall Sensors") This work was supported by Korea Evaluation Institute of Industrial Technology(KEIT) grant funded by the Ministry of Trade, Industry & Energy (20009213, "High efficiency High Voltage Smart Ceramic Speaker Driver SoC for Bezelless Smart phones")

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