Laura Zunarelli

PhD Student

Department of Electrical, Electronic, and Information Engineering "Guglielmo Marconi"

Collaborations

Collaboration with:: Analog Technology Department of Texas Instruments Inc.
Country:: United States of America
Description:: The proposed project concerns the development of simulation tools to apply to the electrothermal behavior of ESD protection cells for high voltage applications (> 20 V). Several approaches are being studied to this end. In particular, the structures selected on NPN junctions usually use an optimal snapback condition and a compromise between the occupied area and the cell performance at very interesting high powers. However, NPN high voltage structures are aimed at a reduction in performance when applied in different power conditions, for example by using a progressive reduction in performance by lengthening the stress time applied to the device (Transmission Line Pulse technique). It is expected that new physical phenomena will also occur in correlation with very fast stress, for which it is the performance of the NPN and high voltage structures necessary to be studied and to deal with the rules of scaling of the Wunsch-Bell model (for example, the performance of the CDM model in comparison with that of the HBM model). This analysis will be addressed mainly using numerical simulation with 2D or 3D domains in order to understand an underlying cause of the breakdown or failure conditions of the most promising NPN devices. These simulations will porvide a TCAD-based methodology and it wil help to characterize the physical behavior of devices under different stress conditions.

Laura Zunarelli

Collaborations

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