One of the least advertised features of IRSIM is its ability to quickly estimate power of large VLSI circuits from gate level netlists (.sim).
To install IRSIM on Fedora (default on Fedora Electronic Lab):
# yum install irsim
This estimation is based on the
- ‘three-level quantization scheme’, where the voltage can assume 3 values (GND, VDD/2 and VDD). It is fairly more accurate than the ‘two-level rail-to-rail model’.
- measurement of glitching power.
- estimates reasonably close to those that can be derived by measuring currents with a SPICE simulator with an error of less than 20% and a speed up of about 500 times.
- incremental power measurement.