The Charging and Discharging of Reverse Biased Schottky Diode Voltage-Dependent Capacitor



RC circuit, Schottky diode, transient analysis, voltage-dependent capacitor


Transient analysis of RC circuit with voltage step source, constant resistor and nonlinear voltage-dependent capacitors with the capacitance given by C(vc) = Co/√(1+vc/Vbi), where Co and Vbi  are constant and vc is the voltage across the capacitor, was carried out. The analysis was restricted to this class of nonlinear capacitors, because they represent with acceptable approximation the capacitances of reverse-biased Schottky diodes, which are very important and usually used in several static power converters practical applications. The charging and discharging are described by explicitly solvable nonlinear first-order differential equations. The theoretical analysis results are verified by numerical examples with computer simulation and also by experimentation in the laboratory.



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Author Biography

Ivo Barbi, Solar Energy Research Center, Federal University of Catarina, Florianópolis-SC, Brazil

(Life Fellow, IEEE) was born in Gaspar, Brazil. He received the B.S. and M.S. degrees in electrical engineering from the Federal University of Santa Catarina (UFSC), Florianópolis, Brazil, in 1973 and 1976, respectively, and the Dr. Ing. degree in electrical engineering from the Institut National Polytechnique de Toulouse (INPT), Toulouse, France, in 1979. He founded the Brazilian Power Electronics Society (SOBRAEP), the Brazilian Power Electronics Conference (COBEP), in 1990, and the Brazilian Power Electronics and Renewable Energy Institute (IBEPE), in 2016. He is currently a Researcher with the Solar Energy Research Center and a Professor Emeritus in electrical engineering with UFSC. Prof. Barbi received the 2020 IEEE William E. Newell Power Electronics Award. He served as an Associate Editor for the IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS and the IEEE TRANSACTIONS ON POWER ELECTRONICS for several years. He is currently Editor for the electrical engineering area of the SCIENTIFIC REPORTS JOURNAL (SpringerNature) and Associate Editor of the JOURNAL OF CONTROL, AUTOMATION AND ELECTRICAL SYSTEMS.




How to Cite

I. Barbi, “The Charging and Discharging of Reverse Biased Schottky Diode Voltage-Dependent Capacitor”, Revista Eletrônica de Potência, vol. 28, no. 4, pp. 295–303, Dec. 2023.