Apparatus for balancing power plane pin currents in a...

Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement

Reexamination Certificate

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C174S261000, C361S794000

Reexamination Certificate

active

08053675

ABSTRACT:
Printed wiring board (PWB) provides for reduction in pin counts required for power plane (including ground plane) connections and/or reduction in requirements for connector current handling per pin. Multiple collinear slots in the form of a dashed line are introduced in the metal layer implementing the power plane that alter the current distribution in the power plane and improve the strength of the PWB. The per-pin current profile for connector pins connected to the power plane is equalized by tuning the length of the slot(s). The slots are dashed and may be made internal to the power plane metal layer to avoid weakening the metal layer for laminated multi-layer PWBs and may be shaped around a connector end when the power plane pin allocation is not uniform at the connector ends. The resulting equalization reduces either pin count required for carrying the power plane current or reduces connector pin current requirements.

REFERENCES:
patent: 5523921 (1996-06-01), Van Lydegraf
patent: 6091609 (2000-07-01), Hutson et al.
patent: 6496383 (2002-12-01), Herrell et al.
patent: 6640435 (2003-11-01), Balakrishnan
patent: 7250913 (2007-07-01), Chang et al.
patent: 7459985 (2008-12-01), Mellitz et al.
patent: 7598913 (2009-10-01), Rao et al.
patent: 2002/0044022 (2002-04-01), Shintani et al.
patent: 2004/0053635 (2004-03-01), Haapala et al.
Office Action in U.S. Appl. No. 11/050,602 on Feb. 6, 2008.
Flamm, Jeurgen, Using Allegro PCB SI to Analyze a Boards Power Delivery System From Power Source to Die Pad, pp. 1-11, Cadence Design System, 2002.
Office Action in U.S. Appl. No. 11/936,673 dated Jun. 2, 2010.
Notice of Allowance in U.S. Appl. No. 11/050,602 dated Jun. 13, 2008.

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