In-package P/G planes analysis and optimization based on transmission matrix method
Power integrity （PI） has become a limiting factor for the chip＇s overall performance, and how to place in-package decoupling capacitors to improve a chip＇s PI performance has become a hot issue. In this paper, we propose an improved transmission matrix method （TMM） for fast decoupling capacitance al...
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| Veröffentlicht in: | Journal of Zhejiang University. A. Science 2008-06, Vol.9 (6), p.849-857 |
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| container_title | Journal of Zhejiang University. A. Science |
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| creator | Wang, Yin-jun Zhuo, Cheng Deng, Jun-yong Zhou, Jin-fang Chen, Kang-sheng |
| description | Power integrity （PI） has become a limiting factor for the chip＇s overall performance, and how to place in-package decoupling capacitors to improve a chip＇s PI performance has become a hot issue. In this paper, we propose an improved transmission matrix method （TMM） for fast decoupling capacitance allocation. An irregular grid partition mechanism is proposed, which helps speed up the impedance computation and complies better with the irregular power/ground （P/G） plane or planes with many vias and decoupling capacitors. Furthermore, we also ameliorate the computation procedure of the impedance matrix whenever decoupling capacitors are inserted or removed at specific ports. With the fast computation of impedance change, in-package decoupling capacitor allocation is done with an efficient change based method in the frequency domain. Experimental results show that our approach can gain about 5× speedup compared with a general TMM, and is efficient in restraining the noise on the P/G plane. |
| doi_str_mv | 10.1631/jzus.A071489 |
| format | Article |
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In this paper, we propose an improved transmission matrix method （TMM） for fast decoupling capacitance allocation. An irregular grid partition mechanism is proposed, which helps speed up the impedance computation and complies better with the irregular power/ground （P/G） plane or planes with many vias and decoupling capacitors. Furthermore, we also ameliorate the computation procedure of the impedance matrix whenever decoupling capacitors are inserted or removed at specific ports. With the fast computation of impedance change, in-package decoupling capacitor allocation is done with an efficient change based method in the frequency domain. 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In this paper, we propose an improved transmission matrix method （TMM） for fast decoupling capacitance allocation. An irregular grid partition mechanism is proposed, which helps speed up the impedance computation and complies better with the irregular power/ground （P/G） plane or planes with many vias and decoupling capacitors. Furthermore, we also ameliorate the computation procedure of the impedance matrix whenever decoupling capacitors are inserted or removed at specific ports. With the fast computation of impedance change, in-package decoupling capacitor allocation is done with an efficient change based method in the frequency domain. Experimental results show that our approach can gain about 5× speedup compared with a general TMM, and is efficient in restraining the noise on the P/G plane.</abstract><cop>Hangzhou</cop><pub>Zhejiang University Press</pub><doi>10.1631/jzus.A071489</doi><tpages>9</tpages></addata></record> |
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| source | SpringerLink Journals; Alma/SFX Local Collection |
| subjects | Civil Engineering Classical and Continuum Physics Engineering Industrial Chemistry/Chemical Engineering Mechanical Engineering 传输模式 电容器 |
| title | In-package P/G planes analysis and optimization based on transmission matrix method |
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