2018-10-23
Analytical Modeling of Power Pin Impedance in Parallel Power Ground Planes
Publication
Publication
An analytical model is developed for the driving point impedance of a power pin for the evaluation of a decoupling capacitor's effectiveness. The model accounts for the finite sized parallel-plate ground-power pairs and is validated against a numerical electromagnetic method. The proposed method is also used in the assessment of pin impedance in a comparative study involving multiple representative locations of a power pin on a rectangular plane. In addition to the pin-capacitor distance, the angular dependency of impedance is demonstrated in the evaluation of the capacitor's effectiveness and a physics based explanation is provided using the developed expression. From the interpretation of the results, a generic design rule is proposed for the placement of decoupling capacitors on parallel-plates.
| Additional Metadata | |
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| Keywords | Decoupling capacitors, Effective radius, Pin impedance, Power delivery network, Power integrity |
| Persistent URL | dx.doi.org/10.1109/NEMO.2018.8503111 |
| Conference | 2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2018 |
| Citation |
Erdin, I. (Ihsan), & Achar, R. (2018). Analytical Modeling of Power Pin Impedance in Parallel Power Ground Planes. In 2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2018. doi:10.1109/NEMO.2018.8503111
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