Моделирование радиационно-стимулированного тиристорного эффекта в инверторе, выполненном по КМОП-технологии
A compact BSIMSOI-RAD macromodel for SOI/SOS CMOS transistors is developed that takes into account the radiation effects. An automated procedure for determination of macromodel parameters is described and shown to be useful for analyzing radiation hardness of CMOS IC fragments depending on the total absorbed dose. The simulation time is estimated.
The possibilities of commercial SPICE are expanded in the new field—space environment electronics design. For this purpose, the set of BJT and MOSFET models with account for radiation influence is included into commercial SPICE device library. The characteristics of devices and circuits subjected to space radiation exposure (gamma-rays, protons, neutrons, electrons, heavy ions) are presented and examined with emphasis on application for radiation hardened electronics systems.
An efficient methodology of electro-thermal design of smart power semiconductor
devices and ICs, based on the combined use of SPICE circuit analysis tool and software tools for
2D/3D thermal simulation of IC chip construction, is presented. The features of low, medium and
high power elements, temperature sensors, IC chips simulation are considered
An EKV-RAD macromodel for SOI/SOS MOSFET with account for radiation effects is developed using a subcircuit approach. As an addition to the standard version of the EKV model 1) radiation dependencies of parameters VTO, GAMMA, KP, E0 are introduced and 2) additional circuit elements to account for floating-body effects and radiation-induced leakage currents under static and dynamic radiation influence are connected. Maximum simulation error is 5–7% in the dose range up to 1 Mrad. It is shown that EKV-RAD spends less CPU time by 15–30% for analog and 40–50% for digital SOI/SOS CMOS circuits simulations compared to BSIMSOI-RAD model.
For the correct accounting of joint effects of radiation and temperature on characteristics of MOSFETs with the help of TCAD system the nonlinear correction coefficient which considers change of concentration of traps from temperature is entered into model of traps volume density in oxide.
A special RAD-THERM version of TCAD subsystem based on Sentaurus Synopsys platform taking into account different types of irradiation (gamma-rays, neutrons, electrons, protons, single events) and external/internal heating effects was developed and validated to forecast the results of natural experiments, and help the designer on with reliability guarantee. The radiation- and temperature-induced faults were modeled and simulated for Si/SiGe BJTs/HBTs and bulk/SOI MOSFETs as BiCMOS LSI’s components. The causes of device parameter degradation were discussed.