IR-aware Power Net Routing for Multi-Voltage Mixed-Signal Design

Shuo Hui Wang, Guan Hong Liou, Yen Yu Su, Po-Hung Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Modern mixed-signal design usually contains multiple power signals with different supply voltages driving different sets of mixed-signal circuit blocks. As the process technology advances to nanometer era, IR drop becomes very significant, which may have great impact on circuit performance and reliability. Insufficient power supply to a circuit block will lead to performance degradation or even functional failure. Although such IR-drop problem can be minimized by widening metal wires or applying mesh routing structures of the power network, excessive metal usage of those power nets with different supply voltages will significantly increase both chip area and cost. This paper presents a new IR-aware routing method to simultaneously route multiple power nets in a mixed-signal design with the considerations of routing congestion, routing tree splitting, wire tapering, and metal layer optimization. Experimental results show that the presented method can effectively reduce total metal usage and satisfy IR-drop constraints.

Original languageEnglish
Title of host publicationProceedings of the 2019 Design, Automation and Test in Europe Conference and Exhibition, DATE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages72-77
Number of pages6
ISBN (Electronic)9783981926323
DOIs
StatePublished - 14 May 2019
Event22nd Design, Automation and Test in Europe Conference and Exhibition, DATE 2019 - Florence, Italy
Duration: 25 Mar 201929 Mar 2019

Publication series

NameProceedings of the 2019 Design, Automation and Test in Europe Conference and Exhibition, DATE 2019

Conference

Conference22nd Design, Automation and Test in Europe Conference and Exhibition, DATE 2019
CountryItaly
CityFlorence
Period25/03/1929/03/19

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  • Cite this

    Wang, S. H., Liou, G. H., Su, Y. Y., & Lin, P-H. (2019). IR-aware Power Net Routing for Multi-Voltage Mixed-Signal Design. In Proceedings of the 2019 Design, Automation and Test in Europe Conference and Exhibition, DATE 2019 (pp. 72-77). [8715166] (Proceedings of the 2019 Design, Automation and Test in Europe Conference and Exhibition, DATE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/DATE.2019.8715166