发明授权
US07312402B2 Method and apparatus for providing improved loop inductance of decoupling capacitors
失效
用于提供去耦电容器的改进的环路电感的方法和装置
- 专利标题: Method and apparatus for providing improved loop inductance of decoupling capacitors
- 专利标题(中): 用于提供去耦电容器的改进的环路电感的方法和装置
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申请号: US10269404申请日: 2002-10-11
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公开(公告)号: US07312402B2公开(公告)日: 2007-12-25
- 发明人: Rafael Antu , Cathy Marie Drews , David A. Plomgren , Todd Edward Takken
- 申请人: Rafael Antu , Cathy Marie Drews , David A. Plomgren , Todd Edward Takken
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Chambliss, Bahner & Stophel
- 代理商 David W. Lynch
- 主分类号: H05K1/16
- IPC分类号: H05K1/16 ; H01K3/10
摘要:
A method and apparatus that provides improved loop inductance of decoupling capacitors. Vias are moved close to the pads and close to each other. Instead of placing power and ground vias on opposite sides of the capacitor, these vias are moved around to the same side of the capacitor and are placed as close to each other as manufacturing tolerances will allow. For designs using standard two-terminal surface mount capacitors, two vias per capacitor, and standard manufacturing procedures (no vias inside pads, for example), the lowest possible loop inductance of the capacitor's connections to the printed circuit board planes is provided. This results in the lowest effective capacitor series input inductance.
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