標題: Hierarchical Power Network Synthesis for Multiple Power Domain Designs
作者: Lee, Chieh-Jui
Liu, Sean Shih-Ying
Huang, Chuan-Chia
Chen, Hung-Ming
Lin, Chang-Tzu
Lee, Chia-Hsin
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2012
摘要: In this paper, we propose a methodology that synthesize and optimize the power network for design with multiple power domains. An architecture is presented to represent the power network with presence of sleep transistors. The power network is numerically modeled to RC network using Modified Nodal Analysis and solved using Conjugate Gradient Method. Regarding to IR drop effect mitigation, an optimization technique is proposed based on Simulated Annealing that minimize total power stripe area while satisfying a given IR drop constraint. In consideration of multiple power domains, the given power domains are represented in tree-like structure and our algorithm is recursively applied to synthesize and optimize the power network for each power domain in a hierarchical fashion. The proposed methodology is integrated to commercial design tool and experimented on real design case for evaluation. To ensure practical aspect of our approach, evaluation is performed on latest digital design commercial tool. Design data and parameters are extracted using Open Access. The result of our algorithm is fed back to latest commercial tool for final IR and EM analysis. Our algorithm is tested on both industrial testcase and academic MCNC benchmark. Comparing to conventional P/G network, using our power network synthesis can achieve 31% - 35% reduction in total P/G area while satisfying maximum 10% IR-drop constraint.
URI: http://hdl.handle.net/11536/20352
ISBN: 978-1-4673-1036-9
ISSN: 1948-3295
期刊: 2012 13TH INTERNATIONAL SYMPOSIUM ON QUALITY ELECTRONIC DESIGN (ISQED)
起始頁: 477
結束頁: 482
Appears in Collections:Conferences Paper