Equation based transient circuit optimization

摘要

Circuit simulation can be performed on digital, analog, and mixed signal types of circuitry. Phases of operation are identified for a circuit and transient behavior is analyzed. Multiple time points are identified and the circuit is replicated for those time points with evaluation of the circuitry performed at those various time points. Simultaneous optimization is performed across the time points. Transistors and other devices can have their lengths, widths, and number of fingers optimized. Simulation can include determining Kirchhoff current law equations for various nodes within the circuit. Equations describing device operation can include non-convex signomial equations and convex polynomial equations.

主权项

1. A computer-implemented method for circuit evaluation comprising:
obtaining a representation for a circuit wherein the representation describes a plurality of devices and connections between the devices wherein the devices comprise transistors which transition through a plurality of regions of operation; importing models for the plurality of devices included in the representation; identifying, using one or more processors, N time points of operation for the circuit; instantiating the circuit N times for simulation where the simulation is performed on the plurality of regions of operation where the regions of operation include two or more of off, sub-threshold leakage, linear, and saturated states; and optimizing the circuit simultaneously at the N time points through the N simulation instantiations.