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Frank Puhane; Dr. René Kalbitz
Capacitors
21. June 2024
Reading time: 10 Min.

Long- and Short-Term Voltage Dependence of Ferroelectric Class 2 MLCCs

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Long- and Short-Term Voltage Dependence of Ferroelectric Class 2 MLCCs

For the design-in process, it has become a common procedure to employ simulation software such as SPICE. The developer may load files for multilayer ceramic capacitors (MLCCs) into the software to simulate the influence of the voltage and frequency behavior of the MLCCs on the circuit. To make this simulation computationally efficient, it is necessary to implement elegant mathematical models for the MLCCs.

This article briefly reviews the physical background of the voltage-dependent capacitance of class 2 MLCCs.

Furthermore, it describes the mathematical polarization model's development, suitable for simulation software implementation.

 

Content:

  • Motivation and background
  • Experimental details
  • Aging effects on capacitance-voltage measurements
  • Conclusion and consequence for the design-in process

 

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