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Solving method for transient analysis of power source network based on equivalent circuit

An equivalent circuit, integrated circuit technology, applied in circuits, electrical components, electrical digital data processing, etc., can solve the problem of occupying a lot of memory, not making full use of the regularity of the power supply network structure, and not fully examining the power network structure characteristics of the chip, etc. question

Inactive Publication Date: 2003-07-23
TSINGHUA UNIV
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Problems solved by technology

Although these new methods have made great progress in the analysis of the power supply network of large-scale circuits, they have not fully investigated the characteristics of the power supply network structure of the chip, and have not fully utilized the regularity of the power supply network structure. many disadvantages

Method used

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  • Solving method for transient analysis of power source network based on equivalent circuit
  • Solving method for transient analysis of power source network based on equivalent circuit
  • Solving method for transient analysis of power source network based on equivalent circuit

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Embodiment Construction

[0185] We use a self-generated, but not general representative example to illustrate the specific implementation of the present invention, and execute it according to the above flow chart.

[0186] This 8×8 example top view (18), each point in the figure (marked as * Or ·) indicates the working unit (cell) in the circuit, that is, the nodes we want to analyze and simulate, they have sink currents and associated capacitances to ground. Each connection has resistance and inductance, as shown in the partial enlarged diagram below. In this example, we use an external power supply ring to represent the power supply, which can be logically regarded as a node. According to the definition in the previous part, it is obvious that the Middle Node marked as (·) is marked as ( * ) is the Cross Node. The circle box in the figure is the part between the two Cross Nodes. The actual circuit is shown in Figure (19). The following description will mainly focus on this part of the circuit, an...

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Abstract

The method belongs to the routing design area in VLSI physical design. The characters of the method of using computers to solve the set of linear equations are as follows. Based on the features of that the power wire / ground, wire network of the application specific integrated circuit (ASIC) contains a great lot of the chain topology, the parameters R, L, C and the current source in the RLC circuit are equivalent to the nodes at the two ends of the chain. The set of linear equations is listed for the equivalent circuits composed of the nodes at the two ends of all chains. Then, the magnitudes of voltage of the mergered nodes in all chains are determined. The method has the advantages of fast and saving the memory. The scale of the chips to be treated is posible to be enlarged and the precision meets the demand.

Description

technical field [0001] The method of transient analysis and solution of integrated circuit power supply network based on equivalent circuit belongs to the field of VLSI physical design, especially the technical category of transient analysis and solution of RLC power line / ground network in the field of design 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 integrated circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50H01L21/66H01L21/768H01L21/82
Inventor 洪先龙蔡懿慈潘著洛祖莹傅静静谭向东
Owner TSINGHUA UNIV
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