Coupling algorithms for mixed-level circuit and device simulation

Author

Mayaram, Kartikeya ; Pederson, Donald O.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Volume

11

Issue

8

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

1003

Lastpage

1012

Abstract

A general framework for mixed-level circuit and device simulation is described. This framework was used in the development of the simulation program CODECS (coupled device and circuit simulator). Various algorithms to couple the device and circuit simulators for DC and transient analyses have been implemented in CODECS. These algorithms are evaluated based on their convergence properties and run-time performance. This study provides guidelines for choosing a particular coupling algorithm. A modified two-level Newton algorithm is used for DC analysis, whereas a full block-LU decomposition algorithm is used for transient analysis. This combination of algorithms provides reasonable convergence and run-time performance. A simple latency scheme provides a 50% speedup. Coupling for small-signal AC and pole-zero analyses are described

Keywords

circuit analysis computing; convergence of numerical methods; digital simulation; poles and zeros; transient response; CODECS; DC analysis; convergence properties; coupling algorithm; full block-LU decomposition algorithm; mixed level circuit/device simulation; pole-zero analyses; run-time performance; simulation program; small-signal AC analysis; transient analysis; two-level Newton algorithm; Algorithm design and analysis; Analytical models; Circuit simulation; Codecs; Convergence; Coupling circuits; Delay; Guidelines; Runtime; Transient analysis;

fLanguage

English

Journal_Title

Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0278-0070

Type

jour

DOI

10.1109/43.149771

Filename

149771