Transient analysis method and transient analysis system under integrated circuit power supply network full-parameter model

A technology of power supply network and integrated circuit, applied in the field of transient analysis method and system under the full parameter model of integrated circuit power supply network, can solve the problems of complex dynamic system and the like

Inactive Publication Date: 2013-07-17
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The dynamic system formed by the full parameter model including resistance, capacitance and inductance will be more complex

Method used

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  • Transient analysis method and transient analysis system under integrated circuit power supply network full-parameter model
  • Transient analysis method and transient analysis system under integrated circuit power supply network full-parameter model
  • Transient analysis method and transient analysis system under integrated circuit power supply network full-parameter model

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no. 1 example

[0040] The purpose of this embodiment is to propose a transient analysis method for the power supply network under a full parameter model that is more stable and efficient than other methods in this field and takes up less memory, that is, when the solution accuracy specified by the user is satisfied, the The transient analysis of the voltage drop of the power supply network nodes in the specified SPICE netlist format is completed with as little running time as possible and as little memory consumption as possible.

[0041] In order to achieve the above purpose, the flow chart of the transient analysis method for the power supply network under the full parameter model proposed in this embodiment is specifically as follows figure 1 shown.

[0042] Step S110 (the word "step" is omitted hereinafter) determines the full parameter model information of the integrated circuit power supply network to be analyzed.

[0043] In this embodiment, preferably, the full parameter model infor...

no. 2 example

[0119] Figure 8 It is a schematic structural diagram of a transient analysis system under a full parameter model of an integrated circuit power supply network according to a second embodiment of the present invention.

[0120] Such as Figure 8 As shown, the system includes a full parameter model information determination module 80 , a network topology graph establishment module 81 connected to it, an analysis module 82 connected to the establishment module 81 , and an output module 83 .

[0121] A full parameter model information determining module 80, which determines the full parameter model information of the integrated circuit power supply network to be analyzed.

[0122] Specifically, the module 80 scans the SPICE netlist of the integrated circuit power supply network to determine the full parameter model information of the integrated circuit power supply network.

[0123] A network topology diagram establishing module 81, which establishes a power supply network topo...

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Abstract

The invention discloses a transient analysis method under an integrated circuit power supply network full-parameter model. The method comprises the following steps: a determining step of determining the full-parameter model information of a to-be-analyzed integrated circuit power supply network; an establishing step of establishing a power supply network topological graph comprising a plurality of independent sub-circuits based on the full-parameter model information; and an analysis step of in parallel carrying out direct current working site analysis and transient analysis on each sub-circuit of the power supply topological graph to obtain the circuit node voltage distribution graph at each moment of each sub-circuit. As for a full-parameter circuit model, the invention establishes a linear system capable of adopting a symmetric matrix solver, and adopts a direct solver and an iterative solver in a hybrid manner according to the characteristics of problem solving. The method and system disclosed by the invention can be applied to carrying out fast and precise transient voltage drop analysis on the power supply network under the full-parameter model in formats such as an SPICE (Simulation Program with Integrated Circuit Emphasis) net-list form, especially on the aspect of memory consumption, and the system is improved to a great extent in comparison with the original emulator.

Description

technical field [0001] The invention relates to the field of integrated circuit design, in particular to a transient analysis method and system under a full parameter model of an integrated circuit power supply network. Background technique [0002] In VLSI, an important prerequisite for the normal operation of each component is that it can obtain a normal power supply voltage. In fact, with the continuous reduction of the size of the integrated circuit process, the network impedance of the integrated circuit power supply system under the planar process design is getting larger and larger, and the voltage drop on the metal traces of the power supply system has become non-negligible, that is, components The actual power supply voltage obtained on the circuit is smaller than the external power supply voltage for the integrated circuit. If the voltage drop on the power supply network is too large, the supply voltage on the component may be too low, resulting in an increase in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 蔡懿慈周强杨建磊
Owner TSINGHUA UNIV
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