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Computer simulation of ionizing radiation burnout in power MOSFETs

Conference · · IEEE Trans. Nucl. Sci.; (United States)
OSTI ID:6177014

The first computer simulation of the ..gamma..-induced burnout in power MOSFETs is reported here. The modeling results support the current-induced avalanche burnout mechanism at the interface of the epitaxial layer and the substrate coupled with parasitic bipolar transistor action leading to secondary breakdown and thermal runaway. The simulations allow an evaluation of the effects of semiconductor parameters, device geometry, doping profiles and bias voltage on the burnout dose rate threshold. The model provides a method for optimizing the radiation hardness of power MOSFETs.

Research Organization:
Dept. of Electrical and Computer Engineering, Univ. of New Mexico, Albuquerque, NM (US); Sandia National Lab., Albuquerque, NM (US)
OSTI ID:
6177014
Report Number(s):
CONF-880730-
Journal Information:
IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. 35:6; ISSN IETNA
Country of Publication:
United States
Language:
English