Multi-level power macromodeling
US6625781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Jul 8, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention utilizes the linear complexity of orthogonal vectors to reduce the number of equations (or variables) to be solved. The present invention constructs a power model of a set of combinations of states without considering irrelevant combinations. The invention distinguishes between the switching direction on the input and the output pin. The invention considers state-dependency as a function of power consumed and depending on the paths through internal nodes. The model considers switching input pins that do not cause the output pin to switch to overcome inaccuracies caused by combining the power pin model with the state and arc power model with state. The model considers switching input pins that cause the output pin to switch. For cells in which the slewrate propagation effect from input to output is negligible, the invention uses a model of 2 power pins with state. The invention also determines the validity of this model. The present invention also models a power arc from one input pin to multiple output pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.