A modified MODPEX model for MOSFET and parameter optimization using excel-based genetic algorithm
MODPEX is widely used in industry and universities to produce Pspice model for power semiconductor devices, including MOSFETs. However, the model generated by MODPEX for MOSFETs does not include channel charge at strong inversion condition. This paper presents a modified MODPEX model for MOSFETs, which includes channel charge at strong inversion condition. A process based on genetic algorithm (GA) implemented in Microsoft Office Excel is developed to optimize parameters of the modified MODPEX model. Static and dynamic validation proves that the modified MODPEX model improves simulation accuracy in both switching loss and driver loss.
Parameter extraction for the PSP MOSFET model by the combination of genetic and Levenberg-Marquardt algorithms
Based on the combination of the genetic and Levenberg-Marquardt algorithms, a new method is developed to perform both local and global parameter extraction for the PSP MOSFET model. It has been successfully used to extract parameter sets for a 65-nm technology node. Numerical examples demonstrate its ability to obtain highly accurate model parameter values without excessive computational cost.
Performance Evaluation of Fuzzy Routing Algorithms for a New Fuzzy Mixed Metric Approach
Optimizing routing decisions has been an important subject in research of communication networks. The present paper is introducing a new fuzzy mixed metric approach, which takes routing decisions based on fuzzy costs in parallel to crisp cost of other metrics. The present paper evaluates the new fuzzy approach for its performance. The paper first describes the new fuzzy approach and the fuzzy routing algorithms developed for the approach and then the performance is evaluated both in empirical and analytical terms to show its advantages over the previous fuzzy approaches and traditional link- state routing approach. The paper analyzes the performance for different cases to show the efficacy of load on delay. The present paper bargains with three such cases.