NDLI: KSim: a stable and efficient RKC simulator for capturing on-chip inductance effect

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KSim: a stable and efficient RKC simulator for capturing on-chip inductance effect

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KSim: a stable and efficient RKC simulator for capturing on-chip inductance effect

Content Provider	ACM Digital Library
Author	Devgan, Anirudh Ji, Hao Dai, Wayne
Abstract	On-chip inductance extraction is difficult due to the global effect of inductance, and simulating the resulting dense partial inductance matrix is even more difficult. Furthermore, it is well known that simply discarding smallest terms to sparsify the inductance matrix can render the partial inductance matrix indefinite and result in an unstable circuit model. Recently a new circuit element, K , has been introduced to capture global effect of inductance by evaluating a corresponding sparse K matrix [1]. However, the reason that K has such local properties is not clear, and the positive semi-definiteness of the corresponding sparse K matrix is not proved. In this paper, we present the physical interpretation of K. Based on the physical interpretation, we explain why the faraway mutual K can be ignored (locality) and prove that after ignoring faraway mutual K ,the resultant K matrix is positive definite (stability). Together with a RKC equivalent circuit model, the locality and stability enables us to simulate RKC circuit directly and efficiently for real circuits. A new circuit simulation tool, KSim, has been developed by incorporating the new circuit element K into Berkeley SPICE. The RKC simulation matches better with the full partial inductance matrix simulation with significant less computing time and memory usage, compared to other proposed methods, such as shift-truncate method [2, 3].
Starting Page	379
Ending Page	384
Page Count	6
File Format	PDF
ISBN	0780366344
DOI	10.1145/370155.370415
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2001-01-30
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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