An enhanced BSIM modeling framework for selfheating aware circuit design

[摘要] This work proposes a modeling framework to enhance the industry-standardBSIM4 MOSFET models with capabilities for coupled electro-thermalsimulations. An automated simulation environment extracts thermal informationfrom model data as provided by the semiconductor foundry. The standard BSIM4model is enhanced with a Verilog-A based wrapper module, adding thermal nodeswhich can be connected to a thermal-equivalent RC network. The proposedframework allows a fully automated extraction process based on the netlist ofthe top-level design and the model library. A numerical analysis tool is usedto control the extraction flow and to obtain all required parameters. Theframework is used to model self-heating effects on a fully integrated classA/AB power amplifier (PA) designed in a standard 65 nm CMOS process. The PAis driven with +30 dBm output power, leading to an average temperaturerise of approximately 40 °C over ambient temperature.

[学科分类] 电子、光学、磁材料