Doctoral Dissertations

Keywords and Phrases

ESD; Operating conditions; Soft failure


"Conflicting observations have been found in the literature regarding the effect of operating conditions on ESD (electrostatic discharge) susceptibility. While some studies have suggested a strong correlation between the two, others observed little to no correlation. In this work, a systematic study has been carried out suggesting the existence of a strong correlation between the ESD susceptibility and operating conditions. It is found that the root cause of this conflict is random ESD noise injection. A measurement approach is proposed to synchronize the noise injection with the system activity such as high/low CPU load. In this approach, the current consumption or the EMI (electromagnetic interference) of the device under test is monitored and used to synchronize the injections.

To improve the poor repeatability of the ESD tests, the proposed approach is incorporated into a robotic scanner to create an automated ESD tester. Soft failure detection algorithms are added to the tester, giving it the ability to detect (and characterize) a soft failure in a similar way as a human - through sight and hearing. This is the first time that image processing algorithms are used for characterizing soft failures. Using the tester, a 2-D color-coded susceptibility map is obtained for each soft failure. These failure-specific maps can be used to identify/pinpoint the sensitive locations of the device knowing the soft failure type, reducing the tedious and time-consuming process of soft failure investigations"--Abstract, page iv.


Hwang, Chulsoon

Committee Member(s)

Beetner, Daryl G.
Fan, Jun, 1971-
Kim, DongHyun (Bill)
Khilkevich, Victor
Fischer, Daniel


Electrical and Computer Engineering

Degree Name

Ph. D. in Electrical Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory


Missouri University of Science and Technology

Publication Date

Spring 2021

Journal article titles appearing in thesis/dissertation

  • Systematic analysis of ESD-induced soft-failures as a function of operating conditions
  • Analysis of CPU loading effect on ESD susceptibility
  • Automated ESD-induced soft failure detection and characterization using image- and audio-based methods
  • investigation of electrostatic discharge- induced soft-failure using 3D robotic scanning


xiii, 85 pages

Note about bibliography

Includes bibliographic references.


© 2021 Omid Hoseini Izadi, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Thesis Number

T 11836

Electronic OCLC #