Patent ID: 6532439
Filing Date: 2003-03-11
Classification: G06F,H01L,H05K

Abstract:
A method for decoupling a power distribution system, the method comprising:creating a model of an electronic circuit including said power distribution system, wherein said model includes a plurality of cells interconnected at predetermined nodes, wherein each of the cells represents an electrical characteristic of said electronic circuit, and wherein said power distribution system includes a power supply, and wherein said model of electronic circuit includes attributes of said power supply, wherein said power supply is characterized in said model by one or more pole frequencies, one or more zero frequencies, and one or more resistances; selecting one or more decoupling capacitors for said electronic circuit, and updating said model of said electronic circuit to include electrical characteristics of said decoupling capacitors; simulating operation of said electronic circuit using said model of electronic circuit; determining a transfer impedance value at each of nodes corresponding to one or more specific locations in said electronic circuit; comparing said transfer impedance value at each of said one or more nodes to a target impedance; repeating said selecting, said simulating, said determining, and said comparing until said transfer impedance value at each of said one or more nodes is at or below said target impedance, and providing an output that specifies electrical characteristics of specific decoupling capacitors at specific nodes that results in the transfer impedance value at said each node corresponding to one or more specific locations to be at or below the target impedance.