On SPICE Simulation of Voltage-Dependent Capacitors
| Autor: | Ilya Zeltser, Shmuel Ben-Yaakov |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Equivalent series resistance 020209 energy 020208 electrical & electronic engineering Spice Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Dielectric Topology Filter capacitor Capacitance Signal law.invention Capacitor Hardware_GENERAL law Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Voltage |
| Zdroj: | IEEE Transactions on Power Electronics. 33:3703-3710 |
| ISSN: | 1941-0107 0885-8993 |
| Popis: | The capacitance of voltage-dependent capacitors can be defined in two ways: as “total capacitance” Ct ( v ) = Q / v and “local capacitance” Cd ( v ) = dQ / dv . The former is applicable to cases when the capacitance is measured by a charge injection or when the total capacitance is derived from the properties of the dielectric material. The “local capacitance” is applicable in cases when the capacitor is measured by a small test signal for various bias voltages. Based on the capacitance definitions, SPICE compatible models are implemented either by applying local and integral operators or by a nonlinear reflection of a linear capacitor. These are demonstrated by PSPICE behavioral-dependent sources. When properly emulated, the Ct and Cd models are applicable for simulating both small and large signals across the nonlinear capacitor. It is further brought up that both models suffer from convergence problems that can be partially alleviated by slowly increasing the level of the excitation signal and by reducing the maximum step time. |
| Databáze: | OpenAIRE |
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