CN105447242B - A kind of method of real-time analysing integrated circuits electric power network state - Google Patents
A kind of method of real-time analysing integrated circuits electric power network state Download PDFInfo
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- CN105447242B CN105447242B CN201510789984.0A CN201510789984A CN105447242B CN 105447242 B CN105447242 B CN 105447242B CN 201510789984 A CN201510789984 A CN 201510789984A CN 105447242 B CN105447242 B CN 105447242B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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Abstract
A kind of method that the present invention discloses real-time analysing integrated circuits electric power network state, comprising: 1, according to the power supply cabling of integrated circuit diagram, resistance-capacitance network is extracted, the electric power network model of spice format is formed；2, build power supply unit using the power supply mould group in integrated circuit, formed spice format for electric model；3, it is emulated based on integrated circuit, extracts the dynamic power consumption state of modules in integrated circuit, become power consumption model；4, based on electric power network model and for electric model, top layer artificial circuit is built；Wherein power source model is connected to supply node, and power consumption model is connected to power consumption node；5, top layer artificial circuit is emulated using spice tool；Understand the state of electric power network in real time by the waveform observation to different nodes.The present invention can accurately analyze the pressure drop of each node of electric power network, and then can analyze the superiority and inferiority of power supply signal cabling, or the judgment basis of the adjustment as power supply unit quantity and position.
Description
[technical field]
The present invention relates to IC design technical field, in particular to a kind of real-time analysing integrated circuits electric power network shape
The method of state.
[background technique]
At the beginning of integrated circuit back-end designs (or layout design), need to carry out integrated planning layout to its electric power network；It is existing
Have in technology, generally rule of thumb estimation or rough top layer are simulated to assess the building of electric power network, and it is inaccurate, and power supply
The quality of network directly affects the quality of product, therefore has design risk.
[summary of the invention]
The purpose of the present invention is to provide a kind of methods of real-time analysing integrated circuits electric power network state, can be accurate
The pressure drop of analysis each node of electric power network in real time, refers to for design optimization.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of method of real-time analysing integrated circuits electric power network state, comprising: to the power supply cabling of integrated circuit diagram
Extract and form electric power network model, is formed based on power mould group and integrated circuit electricity consumption condition for electric model and power consumption
Model；And it is based on electric power network model, for electric model and power consumption model buildings top layer artificial circuit；Top layer artificial circuit is done imitative
Very, the real-time pressure drop situation of different nodes is obtained.
Further, specifically includes the following steps:
The first step extracts resistance-capacitance network according to the power supply cabling of integrated circuit diagram, forms electric power network model；
Supply node and power consumption node are defined simultaneously；
Second step is built power supply unit using the power supply mould group in integrated circuit, is formed for electric model；
Third step is emulated based on integrated circuit, is extracted the dynamic power consumption state of modules in integrated circuit, is described
To motivate file, become power consumption model；
4th step builds top layer artificial circuit based on electric power network model and for electric model；Wherein power source model is connected to
Supply node, power consumption model are connected to power consumption node；
5th step emulates top layer artificial circuit；Electric power network is understood in real time by the waveform observation to different nodes
State.
Further, electric power network model in the first step, for electric model, excitation file be spice format；In 5th step
Top layer artificial circuit is emulated using spice tool.
Compared with the existing technology, the invention has the following advantages:
The present invention, which extract to the power supply cabling of integrated circuit diagram, forms electric power network model, with the mould group and whole of powering
It is formed based on body circuit electricity consumption condition for electric model and power consumption model；And it is based on electric power network model, for electric model and power consumption
Model buildings top layer artificial circuit, wherein power source model is connected to supply node, and power consumption model is connected to power consumption node；It utilizes
Spice tool emulates top layer artificial circuit, the real-time pressure drop situation of different nodes can be obtained, to understand electric power network
State；Based on the present invention can be by actual physics domain cabling and for power consumption data, rely on the emulation of emulation tool accurate
The pressure drop of each node of electric power network, that is, corresponding domain node is analyzed, and then can analyze the superiority and inferiority of power supply signal cabling, or
The judgment basis of adjustment as power supply unit (LDO etc.) quantity and position.
[Detailed description of the invention]
Fig. 1 is integrated circuit diagram power supply cabling schematic diagram；
Fig. 2 is resistance-capacitance network model schematic；
Fig. 3 is for electric model, the dynamic power consumption status diagram of power consumption model and its each module；
Fig. 4 is top layer artificial circuit topological structure schematic diagram.
[specific embodiment]
Shown in please referring to Fig.1 to Fig.4, a kind of method of real-time analysing integrated circuits electric power network state of the present invention, including
Following steps:
The first step extracts resistance-capacitance network according to the power supply cabling of integrated circuit diagram, forms the electricity of spice format
Source network model.Supply node and power consumption node are defined simultaneously.
Second step builds power supply unit using the power supply mould group in integrated circuit, formed spice format for electric model.
Third step is emulated based on integrated circuit, is extracted the dynamic power consumption state of modules in integrated circuit, is described
For the excitation file of spice format, become power consumption model.
4th step is based on aforementioned first, electric power network model in two steps and for electric model, builds top layer artificial circuit.
Wherein power source model is connected to supply node, and the power consumption model that third step generates is connected to power consumption node.
5th step emulates top layer artificial circuit using spice tool.It is observed by the waveform to different nodes
The state of electric power network is understood in real time.
Claims (2)
1. a kind of method of real-time analysing integrated circuits electric power network state characterized by comprising to integrated circuit diagram
Power supply cabling, which extract, forms electric power network model, and power supply mould is formed based on power mould group and integrated circuit electricity consumption condition
Type and power consumption model；And it is based on electric power network model, for electric model and power consumption model buildings top layer artificial circuit；Top layer is emulated
Circuit emulates, and obtains the real-time pressure drop situation of different nodes；
Specifically includes the following steps:
The first step extracts resistance-capacitance network according to the power supply cabling of integrated circuit diagram, forms electric power network model；Simultaneously
Define supply node and power consumption node；
Second step is built power supply unit using the power supply mould group in integrated circuit, is formed for electric model；
Third step is emulated based on integrated circuit, is extracted the dynamic power consumption state of modules in integrated circuit, is described it as swashing
File is encouraged, power consumption model is become；
4th step is based on electric power network model, for electric model and power consumption model, builds top layer artificial circuit；Wherein power source model
It is connected to supply node, power consumption model is connected to power consumption node；
5th step emulates top layer artificial circuit；Understand the shape of electric power network in real time by the waveform observation to different nodes
State.
2. a kind of method of real-time analysing integrated circuits electric power network state according to claim 1, which is characterized in that electricity
Source network model, for electric model, excitation file be spice format；Using spice tool to top layer artificial circuit in 5th step
It emulates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510789984.0A CN105447242B (en) | 2015-11-17 | 2015-11-17 | A kind of method of real-time analysing integrated circuits electric power network state |
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| CN201510789984.0A CN105447242B (en) | 2015-11-17 | 2015-11-17 | A kind of method of real-time analysing integrated circuits electric power network state |
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| CN105447242A CN105447242A (en) | 2016-03-30 |
| CN105447242B true CN105447242B (en) | 2019-01-15 |
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Families Citing this family (2)
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| CN111291526A (en) * | 2020-03-17 | 2020-06-16 | 芯启源(上海)半导体科技有限公司 | Novel method for simulating stability of fast power supply loop |
| CN116011379B (en) * | 2023-03-28 | 2023-08-15 | 长鑫存储技术有限公司 | Simulation method, simulation device, electronic equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1477697A (en) * | 2002-08-21 | 2004-02-25 | 矽统科技股份有限公司 | Analysis methd of power supply random signal and its reducing method |
| CN101504681A (en) * | 2009-03-20 | 2009-08-12 | 东南大学 | Evaluation method for decoupling capacitor on ASIC sheet based on chain circuit |
| CN101650408A (en) * | 2008-08-12 | 2010-02-17 | 华为技术有限公司 | Method, device and equipment for detecting on-line power consumption of load of integrated circuit |
| CN103207941A (en) * | 2013-04-27 | 2013-07-17 | 清华大学 | Transient analysis method and transient analysis system under integrated circuit power supply network full-parameter model |
| CN103310070A (en) * | 2013-06-26 | 2013-09-18 | 清华大学 | Hierarchical simulation method for three-dimensional chip power supply ground network |
-
2015
- 2015-11-17 CN CN201510789984.0A patent/CN105447242B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1477697A (en) * | 2002-08-21 | 2004-02-25 | 矽统科技股份有限公司 | Analysis methd of power supply random signal and its reducing method |
| CN101650408A (en) * | 2008-08-12 | 2010-02-17 | 华为技术有限公司 | Method, device and equipment for detecting on-line power consumption of load of integrated circuit |
| CN101504681A (en) * | 2009-03-20 | 2009-08-12 | 东南大学 | Evaluation method for decoupling capacitor on ASIC sheet based on chain circuit |
| CN103207941A (en) * | 2013-04-27 | 2013-07-17 | 清华大学 | Transient analysis method and transient analysis system under integrated circuit power supply network full-parameter model |
| CN103310070A (en) * | 2013-06-26 | 2013-09-18 | 清华大学 | Hierarchical simulation method for three-dimensional chip power supply ground network |
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Address after: 710055 Shaanxi City, Xi'an province high tech Road No. 38, innovation center, A, block, floor 4 Applicant after: XI'AN UNIIC SEMICONDUCTORS Co.,Ltd. Address before: 710075 Shaanxi City, Xi'an province high tech Road No. 38, innovation center, A, block, floor 4 Applicant before: Xi'an Sinochip Semiconductors Co., Ltd. |
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