DocumentCode :
50962
Title :
Circuit-Oriented Treatment of Nonlinear Capacitances in Switched-Mode Power Supplies
Author :
Costinett, Daniel ; Maksimovic, Dragan ; Zane, Regan
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN, USA
Volume :
30
Issue :
2
fYear :
2015
fDate :
Feb. 2015
Firstpage :
985
Lastpage :
995
Abstract :
Nonlinear, voltage-dependent capacitances of power semiconductor devices are capable of having significant impact on the operation of switched-mode power converters. Particularly at high switching frequency, these nonlinearities play a significant role in determining switching times, losses, and converter dynamics during switching transitions. In order to accommodate the well-established design and analysis techniques commonly used for linear circuits, this paper examines the nonlinear voltage-dependence of switching device capacitances and proposes a circuit-oriented analysis technique that allows the parasitic capacitances to be replaced with linear equivalents. The multitude of developed equivalents are verified through full nonlinear simulation in both MATLAB/Simulink and SPICE, as well as through experimental results.
Keywords :
SPICE; capacitance; circuit simulation; equivalent circuits; power semiconductor switches; switched mode power supplies; switching convertors; Matlab; SPICE; Simulink; circuit oriented analysis technique; linear circuits; linear equivalents; nonlinear simulation; nonlinear voltage-dependence capacitance; parasitic capacitance; power semiconductor devices; switched mode power converter; switched mode power supplies; switching device capacitance; switching loss determination; switching time determination; switching transitions; Capacitance; Capacitors; Impedance; Integrated circuit modeling; Mathematical model; Switches; Switching circuits; Equivalent circuits; linearization techniques; nonlinear circuits; parasitic capacitance; power semiconductor devices;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2014.2313611
Filename :
6778020
Link To Document :
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