Efficient Output Waveform Evaluation of a CMOS Inverter Based on Short-Curcuit Current Prediction

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SUMMARY A novel approach for obtaining the output waveform, the propagation delay and the short-circuit power dissipation of a CMOS inverter is introduced. The output voltage is calculated by solving the circuit dierential equation only for the conducting transistor while the eect of the short-circuit current is con- sidered as an additional charge, which has to be discharged through the conducting transistor causing a shift to the output waveform. The short-circuit current as well as the corresponding discharging current are accurately predicted as functions of the required time shift of the output waveform. A program has been developed that implements the proposed method and the results prove that a signicant speed im- provement can be gained with a minor penalty in accuracy. Copyright ? 2002 John Wiley & Sons, Ltd.

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Available from: Alexander Chatzigeorgiou, Oct 29, 2015
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