论文信息 - Scalable small-signal model for BJT self-heating

Scalable small-signal model for BJT self-heating

The effects of self-heating on BJT (bipolar junction transistor) behavior are demonstrated through measurement and simulation. Most affected are the small-signal parameters Y/sub 22/ and Y/sub 12/. A frequency-domain solution to the heat-flow equation is presented. It applies to any rectangular emitter geometry. This model, although simple enough for CAD, predicts thermal spreading impedance with good accuracy for a wide range of frequencies.<<ETX>>

R.M. Fox | S.-G. Lee

[1] J. C. Jaeger,et al. Conduction of Heat in Solids , 1952 .

[2] G. Meijer. The current dependency of the output conductance of voltage-driven bipolar transistors , 1977 .

[3] E. S. Schlig,et al. Thermal properties of very fast transistors , 1970 .

[4] O. Mueller. Internal thermal feedback in four–poles especially in transistors , 1964 .

[5] R. S. Vogelsong,et al. Simulation of thermal effects in electrical systems , 1989, Proceedings, Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[6] R. T. Dennison,et al. Local thermal effects in high performance bipolar devices/circuits , 1989, Proceedings of the Bipolar Circuits and Technology Meeting.