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A behavioral circuit simulation model for high-power GaAs Schottky diodes

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3 Author(s)
Pendharkar, S.P. ; Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA ; Winterhalter, C.R. ; Shenai, K.

This paper proposes a physically based behavioral circuit simulation model for high-power GaAs Schottky diodes which is valid over all regions of operation. No conditional statements are needed to define the regions of operation. A new and more accurate method of obtaining depletion capacitance model parameters from the measured capacitance values is proposed. A simple current- and temperature-dependent resistance model is used to model the nonlinear diode resistance as well as contact and packaging resistances. The validity of the model is demonstrated under various DC and transient switching conditions. Simulation results are compared with the experimental data obtained from a 200 V GaAs Schottky diode. The diode model is tested at various temperatures in different test circuits and the simulation results are shown to be in excellent agreement with the measured data under static and dynamic switching conditions. The model can be easily implemented in other circuit simulators.

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Electron Devices, IEEE Transactions on  (Volume:42 ,  Issue: 10 )