A study of decoupling capacitor effectiveness in power and ground grid networks
Decaps can be very effective in reducing power grid noise, but they cannot be inserted on a chip in an ad-hoc manner without considering the grid parasitic impedances, switching frequencies of the blocks, and proximity to the power supply pins. It is possible that a decoupling capacitor inserted int...
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creator | Todri, A. Marek-Sadowska, M. Maire, F. Matheron, C. |
description | Decaps can be very effective in reducing power grid noise, but they cannot be inserted on a chip in an ad-hoc manner without considering the grid parasitic impedances, switching frequencies of the blocks, and proximity to the power supply pins. It is possible that a decoupling capacitor inserted into a vacant space left by a placer may not only be inefficient, but can also be detrimental. In this paper, we present a detailed study of the decoupling capacitor's effectiveness in the uniform RLC power and ground grid networks. Based on the analysis of a simple circuit in which the decoupling capacitor amplifies the power grid noise, we explain why a decap can be detrimental. We introduce effectiveness metrics for determining those decoupling capacitor locations that capture the effects of parasitic impedances between the decap and switching circuit, decap and power supply, and switching frequency and magnitude of the switching circuit. Our experimental results demonstrate the effectiveness of the proposed metrics. |
doi_str_mv | 10.1109/ISQED.2009.4810371 |
format | Conference Proceeding |
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It is possible that a decoupling capacitor inserted into a vacant space left by a placer may not only be inefficient, but can also be detrimental. In this paper, we present a detailed study of the decoupling capacitor's effectiveness in the uniform RLC power and ground grid networks. Based on the analysis of a simple circuit in which the decoupling capacitor amplifies the power grid noise, we explain why a decap can be detrimental. We introduce effectiveness metrics for determining those decoupling capacitor locations that capture the effects of parasitic impedances between the decap and switching circuit, decap and power supply, and switching frequency and magnitude of the switching circuit. Our experimental results demonstrate the effectiveness of the proposed metrics.</description><subject>Decoupling capacitor effectiveness</subject><subject>Engineering Sciences</subject><subject>Impedance</subject><subject>Micro and nanotechnologies</subject><subject>Microelectronics</subject><subject>Noise reduction</subject><subject>Pins</subject><subject>Power capacitors</subject><subject>Power grids</subject><subject>Power supplies</subject><subject>power supply noise</subject><subject>Switched capacitor circuits</subject><subject>Switched capacitor networks</subject><subject>Switching circuits</subject><subject>Switching frequency</subject><issn>1948-3287</issn><issn>1948-3295</issn><isbn>1424429528</isbn><isbn>9781424429523</isbn><isbn>1424429536</isbn><isbn>9781424429530</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2009</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNpFkE1rwkAYhLcfQtX2D7SXvZfY_d7NUdRWQZDS9hw2yRvdNiZhNyr--4Yq9jQM8zAwg9AjJSNKSfyy-HifTUeMkHgkDCVc0ys0oIIJwWLJ1TXq01iYiHfu5j9g5vYSGN1Dg67AxMRozu7QIIRvQoSU2vTRaoxDu8uPuC5wDlm9a0pXrXFmG5u5tvYYigKy1u2hghCwq3BTH8BjW-V47evdn7gcV9Aeav8T7lGvsGWAh7MO0dfr7HMyj5art8VkvIw2jNI2MgQIN1SYVJK0UKnsBmRWcZUrXsSU0JxontmUG6WVZVpKaWOwmQELKtecD9HzqXdjy6Txbmv9MamtS-bjZVI6v90mhDJhFDN72tFPJ9oBwAU_H8p_AcQzYz4</recordid><startdate>200903</startdate><enddate>200903</enddate><creator>Todri, A.</creator><creator>Marek-Sadowska, M.</creator><creator>Maire, F.</creator><creator>Matheron, C.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0001-8573-2910</orcidid></search><sort><creationdate>200903</creationdate><title>A study of decoupling capacitor effectiveness in power and ground grid networks</title><author>Todri, A. ; Marek-Sadowska, M. ; Maire, F. ; Matheron, C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-h211t-80e038148b50bf6b5329ca636d63f9101d073cab38676a27555a9eac8eae6d733</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Decoupling capacitor effectiveness</topic><topic>Engineering Sciences</topic><topic>Impedance</topic><topic>Micro and nanotechnologies</topic><topic>Microelectronics</topic><topic>Noise reduction</topic><topic>Pins</topic><topic>Power capacitors</topic><topic>Power grids</topic><topic>Power supplies</topic><topic>power supply noise</topic><topic>Switched capacitor circuits</topic><topic>Switched capacitor networks</topic><topic>Switching circuits</topic><topic>Switching frequency</topic><toplevel>online_resources</toplevel><creatorcontrib>Todri, A.</creatorcontrib><creatorcontrib>Marek-Sadowska, M.</creatorcontrib><creatorcontrib>Maire, F.</creatorcontrib><creatorcontrib>Matheron, C.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection><collection>Hyper Article en Ligne (HAL)</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Todri, A.</au><au>Marek-Sadowska, M.</au><au>Maire, F.</au><au>Matheron, C.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>A study of decoupling capacitor effectiveness in power and ground grid networks</atitle><btitle>2009 10th International Symposium on Quality Electronic Design</btitle><stitle>ISQED</stitle><date>2009-03</date><risdate>2009</risdate><spage>653</spage><epage>658</epage><pages>653-658</pages><issn>1948-3287</issn><eissn>1948-3295</eissn><isbn>1424429528</isbn><isbn>9781424429523</isbn><eisbn>1424429536</eisbn><eisbn>9781424429530</eisbn><abstract>Decaps can be very effective in reducing power grid noise, but they cannot be inserted on a chip in an ad-hoc manner without considering the grid parasitic impedances, switching frequencies of the blocks, and proximity to the power supply pins. It is possible that a decoupling capacitor inserted into a vacant space left by a placer may not only be inefficient, but can also be detrimental. In this paper, we present a detailed study of the decoupling capacitor's effectiveness in the uniform RLC power and ground grid networks. Based on the analysis of a simple circuit in which the decoupling capacitor amplifies the power grid noise, we explain why a decap can be detrimental. We introduce effectiveness metrics for determining those decoupling capacitor locations that capture the effects of parasitic impedances between the decap and switching circuit, decap and power supply, and switching frequency and magnitude of the switching circuit. Our experimental results demonstrate the effectiveness of the proposed metrics.</abstract><pub>IEEE</pub><doi>10.1109/ISQED.2009.4810371</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-8573-2910</orcidid></addata></record> |
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identifier | ISSN: 1948-3287 |
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source | IEEE Electronic Library (IEL) Conference Proceedings |
subjects | Decoupling capacitor effectiveness Engineering Sciences Impedance Micro and nanotechnologies Microelectronics Noise reduction Pins Power capacitors Power grids Power supplies power supply noise Switched capacitor circuits Switched capacitor networks Switching circuits Switching frequency |
title | A study of decoupling capacitor effectiveness in power and ground grid networks |
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