Integrated circuit power supply network transient analytical solving method based on multi-layer equivalent circuit model

A technology of equivalent circuit model and integrated circuit, applied in circuits, electrical components, electrical digital data processing, etc., can solve problems such as residuals of difference equations

Inactive Publication Date: 2004-11-10
TSINGHUA UNIV
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Problems solved by technology

Since the approximate solution of the fine mesh contains errors, including the low-frequency error generated by the coarse mesh and the high-frequency error generated by the fine mesh, the difference equation produces a residual error

Method used

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  • Integrated circuit power supply network transient analytical solving method based on multi-layer equivalent circuit model
  • Integrated circuit power supply network transient analytical solving method based on multi-layer equivalent circuit model
  • Integrated circuit power supply network transient analytical solving method based on multi-layer equivalent circuit model

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Embodiment Construction

[0152] Now in conjunction with Fig. (14) the present invention is described in detail according to the following steps:

[0153] 1. The computer reads the information file of the circuit, which includes the correlation structure between nodes; the resistance value, inductance value, initial voltage and current value of the inductor, capacitance value, initial voltage and current value of the capacitor, and the connection of each node The time-varying sink current waveform of the power supply module unit (expressed by PWL, such as Figure 12 ), based on which the topology of the circuit is established in the computer and its electrical parameters are recorded.

[0154] 2. Establishing According to the working cycle of the circuit and the number of cycles to be simulated, the computer reads in the corresponding time step h and the total number of simulation steps M; select the appropriate number of simplified levels L and the accuracy requirements of the simulation ε

[0155] 3...

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Abstract

The inveniton is an transient analysis and solution method of IC power supply network based on a multilayer equivalent circuit model, containing a transient analysis method of power line / wire network based on DC analysis, and its character: it is a fast method: in accordance with the character of IC power line / wire network having a regular mesh structure, according to the basic idea of a multi-mesh method, it makes parameters R, L and C of the medium node RLC circuit in a circuit network and current source approximately equivalent to angular nodes of the circuit network, on the current level forms a crude circuit network layer composed of angular nodes only, makes the above operation layer by layer to form the final crude circuit network, then writes a linear equation group, utilizes the existing method to fast find voltage values of all the nodes of the equivalent circuit at the moment, and then by this, layer by layer restores and finds voltage values of all the combined nodes at the moment.

Description

technical field [0001] The method for transient analysis and solution of integrated circuit power supply network based on multi-level circuit model belongs to the field of VLSI physical design, especially relates to the technical category of transient analysis and solution of RLC power line / ground network in the field of layout and wiring. Background technique [0002] In the physical design of the chip, the wiring of the power line / ground line belongs to the wiring part of the special line network. Improperly designed power line / ground line network will cause a series of serious problems, such as semiconductor devices not getting enough power supply voltage. The logic error of the power supply network, the damage of the power supply network caused by the excessive current density of a certain branch in the power supply network, etc. Therefore, in the wiring stage, the wiring of the power line / ground line has the highest priority. [0003] As the manufacturing process of int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50H01L21/82
Inventor 洪先龙蔡懿慈潘著骆祖莹傅静静谭向东
Owner TSINGHUA UNIV
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