Committee Chair

Loveless, T. Daniel

Committee Member

Ofoli, Abdul R.

Department

Dept. of Electrical Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

Complementary metal-oxide-semiconductor (CMOS) technology is the dominant integrated circuit (IC) technology in modern electronics systems. As CMOS comprises of p-channel and n-channel transistors, there are parasitic PNPN paths that act as cross-coupled bipolar transistors capable of creating low-impedance paths between the power supply rails known as the “latchup” state. Latchup is destructive and requires a power cycle to restore operation. Latchup can be stimulated by ionizing radiation such as a high-energy proton or heavy-ions from deep space, resulting in a significant vulnerability in CMOS space systems. The sensitivity of an IC to single-event latchup (SEL) depends on various process parameters as well as design geometry. This work presents a method for the characterization of the geometric effects of CMOS layout on SEL. The dominant geometric contributors to the overall SEL sensitivity include: (1) substrate contact-to-source spacing (PWNS), (2) well contact-to-source spacing (NWPS), and (3) source-to-source spacing (SS).

Acknowledgments

This work was supported in part by the Tennessee Higher Education Commission (THEC) through the Center of Excellence in Applied Computational Science and Engineering (CEACSE) Program at the University of Tennessee at Chattanooga.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

8-2018

Subject

Metal oxide semiconductors, Complementary -- Design and construction

Keyword

Geometric characterization; Radiation effects; CMOS electronics; Latchup; Single-event effects; Single-event latchup

Discipline

Electrical and Computer Engineering

Document Type

Masters theses

Extent

xiii, 64 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by/3.0/

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