CN102651040A - Method and system for PDN (Power Delivery Network) analysis - Google Patents

Method and system for PDN (Power Delivery Network) analysis Download PDF

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Publication number
CN102651040A
CN102651040A CN2011100498441A CN201110049844A CN102651040A CN 102651040 A CN102651040 A CN 102651040A CN 2011100498441 A CN2011100498441 A CN 2011100498441A CN 201110049844 A CN201110049844 A CN 201110049844A CN 102651040 A CN102651040 A CN 102651040A
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model
computer
hole
plane
breach
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戴文亮
陈兰冰
冯国英
刘平
丹尼斯·内格尔
谭纪林
张文建
赵奇
周忠勇
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Cadence Design Systems Inc
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Cadence Design Systems Inc
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Priority to CN2011100498441A priority Critical patent/CN102651040A/en
Priority to US13/404,629 priority patent/US8631381B2/en
Priority to US13/404,688 priority patent/US8539422B2/en
Priority to US13/404,738 priority patent/US8949102B2/en
Publication of CN102651040A publication Critical patent/CN102651040A/en
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Abstract

The invention relates to a method and system for PDN (Power Delivery Network) analysis. The invention aims at a computer implementation method for analyzing a PDN associated with an electronic circuit design. The method provided by an embodiment can comprise the following steps of: extracting the EM (Electromagnetic) model of each of one or more discontinuous structures associated with the circuit design with at least one processor; and generating a three-dimensional adaptive grid model at least partially based on the extracted EM model. Many other features are also within the scope of the invention.

Description

Be used for the method and system that power delivery networks is analyzed
Technical field
The present invention relates to printed circuit board (PCB) (PCB) design and analysis.More particularly, the present invention relates to power delivery networks (PDN) analysis, it can take place at the actual integrated circuit of manufacturing (IC) before.
Background technology
The PDN that comprises electric power integrality (PI) and IRDrop analyzes has become the focus that circuit designers is paid close attention to.These instruments allow in design and verify two stage simulations and revise power distribution network.When carrying out the PDN analysis, can analyze the frequency response of PDN.During proof procedure, the deviser also can carry out static and dynamic IRDrop and analyze in time domain.Use the PDN analysis tool can allow during the design phase with before making side circuit, to revise design.So just, can significantly reduce the Time To Market of specific products.
For instance, breach plane distributing electric power is a kind of with the circuit common configuration of distributing electric power to the functional module that designs than the broadcasting and TV road.As illustrated among Figure 1A, breach plane distributing electric power is implemented by power plane 110 and ground plane 120 usually, being combined in this paper and will being called as electric power/ground plane to (PGPP) 100 of power plane 110 and ground plane 120.Usually, power plane 110 separates with the form that ground plane 120 is aimed at plane parallel, and separates through dielectric.
Usually, breach plane power distribution network must adapt to electric current switching time extremely fast on its territory.Along with these switching times from generation circuit to another in generation circuit constantly increase, electric power integrality (PI) analysis has become the focus that circuit designers is paid close attention to, can and revise power distribution network in the design phase simulation whereby.Owing to the geometric configuration of PGPP and related switching time, use the transmission line modeling to come frequency dependent characteristic usually, thereby can take careful design measure at design phase period analysis PGPP.For instance, as illustrated among Figure 1B, PGPP model 130 comprises a plurality of transmission line section models 140, its each all be included in the unit 135.When carrying out PGPP model 130, can analyze the frequency response of PGPP.Therefore, (for example) when when in the impedance profile, obviously resonance taking place under a certain frequency, the deviser can add capacitive element in some the some place in PGPP, advantageously to change the resonance frequency composition of power distribution network.Owing to analyze through P1, can and before the manufacturing side circuit, realize this and revise in the design phase, so can significantly reduce the Time To Market of the product that uses said circuit.
Yet for simple plane is not difficult to the transmission line modeling, the abstract shapes of typical PGPP causes complicated border, and some borders wherein maybe be in the inside of the outer boundary of PGPP.For instance, as illustrated among Figure 1B, many PGPP models (for example the PGPP model 130) are implemented in the uniform grid of unit 135, thereby can adapt to complicated shape.Therefore, possibly need the unit 135 of squillion, to fill whole PGPP model 130.Though can use some algorithms to come the complicated shape modeling as PGPP, the computing cost of these algorithms is very expensive, especially must share under the situation of computational resource with other design tool in these a little PI analysis tools.
Unfortunately, the shape that runs into of deviser and configuration often than the simple PGPP shown in Figure 1A far for complicated.For instance, electric power, ground connection and the signal via of breach, hole, otch and band seam cause additional problems can for the deviser of particular electrical circuit.
Summary of the invention
In the first embodiment of the present invention, a kind of computer-implemented method that is used for analyzing the power delivery networks (PDN) that is associated with design of electronic circuits can comprise each electromagnetism (EM) model of one or more discontinuity structures of using at least one processor to extract to be associated with said circuit design.Said method can further comprise generation at least partly based on the said three-dimensional adaptive grid model that extracts the EM model.
Also can comprise one or more in the following characteristic.In certain embodiments, extraction can comprise the execution moment Method Analysis.In certain embodiments, said discontinuity structure can comprise at least one in the following: breach shape, electric power through hole, grounding through hole, signal via, plane breach, hole, the anti-pad of through hole, horizontal edge, pin, reach through hole, interlayer horizontal edge, plane to, bottom short circuit through hole, on cover breach plane and interlayer breach plane.In certain embodiments, extraction can further comprise the areal model that extracts the conductor that is adjacent to given grid.In certain embodiments, can comprise execution electric power integrality (PI) analysis.In certain embodiments, said EM model can comprise one or more conductors, and each in said one or more conductors has first surface and second surface, and each in the said surface comprises at least two nodes.In certain embodiments, said method can further comprise generation through calibration Y parameter model.In certain embodiments, said can have through the setup unit unit width with through the setup unit unit length through calibration Y parameter model.In certain embodiments, said method can further comprise to re-use and saidly extracts extra EM model through calibration Y parameter model.In certain embodiments, extraction can comprise all-wave EM field modeling.In certain embodiments, extract following equation capable of using:
Z s = k σ e kt + e - kt e kt - e - kt
Wherein
Figure BSA00000443469900022
and t are the thickness on single plane.In certain embodiments, said method can further comprise at least one in static IRDrop analysis of execution and the dynamic IR Drop analysis.In certain embodiments, extraction can comprise and uses a kind of unique method of moment to extract areal model, plane discontinuity model, pin model and through hole model.In certain embodiments, said discontinuity structure can have dissimilar, and said each in dissimilar has different geometries.In certain embodiments, said method can further comprise at least part and calculates at least one Green function based on moment Method Analysis.
In another embodiment of the present invention, a kind of computer program of staying on the computer-readable storage medium that stores a plurality of instructions above being stored in is provided.Said instruction causes said processor executable operations when being carried out by processor.Certain operations can comprise uses at least one processor to extract each electromagnetism (EM) model in one or more discontinuity structures that are associated with circuit design.Operation can further comprise generation at least partly based on the said three-dimensional adaptive grid model that extracts the EM model.
Also can comprise one or more in the following characteristic.In certain embodiments, extract operation and can comprise the execution moment Method Analysis.In certain embodiments, said discontinuity structure can comprise at least one in the following: breach shape, electric power through hole, grounding through hole, signal via, plane breach, hole, the anti-pad of through hole, horizontal edge, pin, reach through hole, interlayer horizontal edge, plane to, bottom short circuit through hole, on cover breach plane and interlayer breach plane.In certain embodiments, extract operation and can further comprise the areal model that extracts the conductor that is adjacent to given grid.In certain embodiments, can comprise the operation of carrying out electric power integrality (PI) analysis.In certain embodiments, said EM model can comprise one or more conductors, and each in said one or more conductors has first surface and second surface, and each in the said surface comprises at least two nodes.In certain embodiments, operation can further comprise generation through calibration Y parameter model.In certain embodiments, said can have through the setup unit unit width with through the setup unit unit length through calibration Y parameter model.In certain embodiments, operation can further comprise to re-use and saidly extracts extra EM model through calibration Y parameter model.In certain embodiments, extract operation and can comprise all-wave EM field modeling.In certain embodiments, extract operation following equation capable of using:
Z s = k σ e kt + e - kt e kt - e - kt
Wherein
Figure BSA00000443469900032
and t are the thickness on single plane.In certain embodiments, operation can further comprise at least one in static IRDrop analysis of execution and the dynamic IR Drop analysis.In certain embodiments, extraction is operated to comprise and is used a kind of unique method of moment to extract areal model, plane discontinuity model, pin model and through hole model.In certain embodiments, said discontinuity structure can have dissimilar, and said each in dissimilar has different geometries.In certain embodiments, said method can further comprise at least part and calculates at least one Green function based on moment Method Analysis.
In another embodiment of the present invention, a kind of computing system is provided.Said computing system can comprise: at least one processor; And at least one memory architecture, it is connected with said at least one processor with mode of operation.Said computing system can further comprise first software module; It carries out electromagnetism (EM) model of wherein said first software module each in being configured to extract one or more discontinuity structures that are associated with circuit design by said at least one processor.Said computing system can further comprise second software module, and it is carried out by said at least one processor, and wherein said second software module is through being configured to produce at least partly based on the said three-dimensional adaptive grid model that extracts the EM model.In certain embodiments, said first software module can be further through being configured to carry out moment Method Analysis.In certain embodiments, said discontinuity structure can comprise at least one in the following: breach shape, electric power through hole, grounding through hole, signal via, plane breach, hole, the anti-pad of through hole, horizontal edge, pin, reach through hole, interlayer horizontal edge, plane to, bottom short circuit through hole, on cover breach plane and interlayer breach plane.In certain embodiments, said first software module can be further through being configured to extract the areal model of the conductor that is adjacent to given grid.In certain embodiments, said computing system can further comprise through being configured to carry out the 3rd software module that electric power integrality (PI) is analyzed.In certain embodiments, said EM model can comprise one or more conductors, and each in said one or more conductors has first surface and second surface, and each in the said surface comprises at least two nodes.In certain embodiments, said computing system can further comprise through being configured to produce the 4th software module through calibration Y parameter model.In certain embodiments, said can have through the setup unit unit width with through the setup unit unit length through calibration Y parameter model.In certain embodiments, said computing system can further comprise through being configured to re-use the said five weaknesses part module of extracting extra EM model through calibration Y parameter model.In certain embodiments, said first software module can be further through being configured at least partly to use all-wave EM field modeling to extract.In certain embodiments, said first software module can further the following equation of part use extracts through being configured at least:
Z s = k σ e kt + e - kt e kt - e - kt
Wherein
Figure BSA00000443469900042
and t are the thickness on single plane.In certain embodiments, said computing system can further comprise through be configured to carry out static IRDrop analyze with dynamic IR Drop analysis at least one the 6th software module.In certain embodiments, said first software module can further be extracted through being configured at least partly to use a kind of unique method of moment to extract areal model, plane discontinuity model, pin model and through hole model.In certain embodiments, said discontinuity structure can have dissimilar, and said each in dissimilar has different geometries.In certain embodiments, said computing system can further comprise through being configured at least partly calculate based on moment Method Analysis the 7th software module of at least one Green function.
The details of one or more embodiments of statement in the description of accompanying drawing and hereinafter.Through describe, graphic and technical scheme will understand further feature and advantage.
Description of drawings
Comprising accompanying drawing is that accompanying drawing is incorporated in this instructions and constitutes the part of this instructions, and embodiments of the invention have been described in the accompanying drawing for the ease of further understanding embodiments of the invention, and with describing content in order to explain the principle of embodiments of the invention.
Figure 1A is the figure that describes the right embodiment of power plane/ground plane;
Figure 1B is the figure of conventional grid that thinks the transmission-line equivalent circuit of the frequency characteristic modeling that power plane/ground plane is right according to the usefulness of routine techniques;
Fig. 2 describes the system diagram of system according to an embodiment of the invention;
Fig. 3 describes the system diagram of system according to an embodiment of the invention;
Fig. 4 describes the system diagram of system according to an embodiment of the invention;
Fig. 5 describes according to an embodiment of the invention the right figure in plane power ground;
Fig. 6 describes the system diagram of system according to an embodiment of the invention;
Fig. 7 is the figure that describes to carry according to electric power of the present invention the result of analytic process generation;
Fig. 8 is the figure that describes to carry according to electric power of the present invention the result of analytic process generation;
Fig. 9 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 10 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 11 describes electric power according to an embodiment of the invention to carry some the figure in the noncontinuity model that uses in the analytic process;
Figure 12 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 13 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 14 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 15 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 16 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 17 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 18 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 19 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 20 describes the figure that electric power is according to an embodiment of the invention carried the model that uses in the analytic process;
Figure 21 is the figure that describes to carry according to electric power of the present invention the result of analytic process generation;
Figure 22 is the figure that describes to carry according to electric power of the present invention the result of analytic process generation;
Figure 23 describes the process flow diagram of system according to an embodiment of the invention;
Figure 24 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 25 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 26 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 27 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 28 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 29 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 30 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 31 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 32 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 33 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 34 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 35 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 36 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 37 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 38 describes the figure that electric power according to the invention carries the result of the embodiment of analytic process to show;
Figure 39 is the system that electric power according to the invention is carried the embodiment of analytic process;
Figure 40 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 41 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 42 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 43 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 44 describes the figure of system that electric power according to the invention is carried the embodiment of analytic process;
Figure 45 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 46 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 47 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 48 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 49 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 50 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 51 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process;
Figure 52 describes the figure of screenshot capture that electric power according to the invention is carried the embodiment of analytic process; And
Figure 53 describes the process flow diagram of operation that electric power according to the invention is carried the embodiment of analytic process.
Embodiment
Now will be at length with reference to embodiments of the invention, the instance of said embodiment is described in the accompanying drawings.Yet the present invention can many multi-form embodiments, and should not be interpreted as and be limited to the embodiment that this paper states.But, these embodiment are provided so that the present invention will be for detailed and completely, and will convey to the those skilled in the art to notion of the present invention fully.
As be understood by those skilled in the art that the present invention can be presented as method, system or computer program.Therefore; The present invention can take whole hardware embodiment, whole forms of the embodiment of software implementation example (comprising firmware, resident software, microcode etc.) or integration software and hardware aspect, and it generally all can be described as " circuit ", " module " or " system " in this article.In addition, the present invention can take the form of the computer program on the computer usable storage medium, and wherein said computer usable storage medium has the computer usable program code that is contained in the medium.
Any suitable computing machine capable of using can be used or computer-readable media.Computer-readable media can be computer-readable signal medium or computer-readable storage medium.Computing machine can use or computer-readable storage medium (comprising the memory storage that is associated with calculation element or client electronic installation) (for example can be; But be not limited to) electronics, magnetic, optics, electromagnetism, infrared or semiconductor system, equipment or device, or any appropriate combination of above-mentioned each person.More particular instances of computer-readable media (non-exhaustive) will comprise following each person: electrical connection, portable computer diskette, hard disk, random-access memory (ram), ROM (read-only memory) (ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), optical fiber, portable compact disk ROM (read-only memory) (CD-ROM), optical storage with one or more electric wires.In the context of this document, computing machine can with or computer-readable storage medium can be tangible medium, it can contain or store by instruction execution system, equipment or device and uses or combine said instruction execution system, equipment or device and the program used.
The computer-readable signal medium can comprise in (for example) base band or wherein comprise data-signal as the part of carrier wave through propagating through calculation of coding machine readable program.Said signal through propagation can be taked any one in the various ways, and said form comprises (but being not limited to) electromagnetism, optics or its any suitable combination.The computer-readable signal medium can be not to be computer-readable storage medium and can to transmit, propagate or carry by instruction execution system, equipment or device and use or combined command executive system, equipment or device and any computer-readable media of the program used.
The program code that can use any suitable medium to transmit on the computer-readable media to be comprised, said medium comprise that (but being not limited to) is wireless, wired, fiber optic cables, RF etc., or any appropriate combination of above-mentioned each person.
Available object oriented programming languages (for example, Java, Smalltalk, C++ etc.) is write the computer program code that is used to carry out operation of the present invention.Yet also the computer program code that is used to carry out operation of the present invention write in the programming language of available routine (for example, " C " programming language or similarly programming language).In addition and/or alternatively, can use the hardware description language (HDL) (comprise but be not limited to VHDL and Verilog) of any number to write operation of the present invention.Said program code can be used as independently software package and fully carry out on the user's computer, part carry out on the user's computer, part carrying out on the user's computer and part is carried out on remote computer, or on remote computer or server, carrying out fully.In one situation of back, said remote computer can be connected to user's computer via Local Area Network or wide area network (WAN), maybe can be connected to outer computer (for example, use the ISP and via the Internet).
Hereinafter referring to flowchart text and/or according to an embodiment of the invention the block scheme of method, equipment (system) and computer program the present invention is described.To understand, can come each square frame and the combination of the square frame in flowchart text and/or the block scheme in implementing procedure figure explanation and/or the block scheme through computer program instructions.The processor that can these programmed instruction be offered multi-purpose computer, special purpose computer or other programmable data processing device to be to produce a machine, the member that makes the said instruction of carrying out via the processor of computing machine or other programmable data processing device produce to be used for function/action that implementing procedure figure and/or block scheme square frame are specified.
These computer program instructions also can be stored in the computer-readable memory; But said computer-readable memory vectoring computer or other programmable data processing device work with ad hoc fashion; Make the instruction that is stored in the computer-readable memory produce goods, said goods comprise the instruction of function/action specified in implementing procedure figure and/or the block scheme square frame.
Computer program instructions also can load on computing machine or other programmable data processing device; On computing machine or other programmable device, carry out the sequence of operations step to cause; Thereby produce computer-implemented process, make the instruction of on computing machine or other programmable device, carrying out be provided for the step of function/action specified in implementing procedure figure and/or the block scheme square frame.
Referring to Fig. 2, power delivery networks (PDN) process 210 that displaying can reside on the server computer 212 and can be carried out by server computer 212, said server computer 212 connectable to network 214 (for example, the Internet or LAN).The instance of server computer 212 can comprise (but being not limited to): personal computer, server computer, a series of server computer, microcomputer and mainframe computer.Server computer 212 can be the web server (or a series of server) of operational network operating system, and the instance of said network operating system can (for example) comprise (but being not limited to):
Figure BSA00000443469900081
server,
Figure BSA00000443469900082
or Red
Figure BSA00000443469900083
(Microsoft and form are the trade mark of Microsoft at the U.S., other country or the U.S. and other national registration; Novell and NetWare are the trade mark of novell, inc. at the U.S., other country or the U.S. and other national registration; Red cap is the trade mark of red cap company at the U.S., other country or the U.S. and other national registration; And in nanogram this be the fertile trade mark of growing at the U.S., other country or the U.S. and other national registration of Li Nasituo.) in addition/alternatively; Power delivery networks (PDN) process 210 can reside on the client electronic installation wholly or in part; And carry out by the client electronic installation wholly or in part, said client electronic installation for example is personal computer, notebook, personal digital assistant etc.
As discussing in more detail hereinafter, power delivery networks (PDN) process 210 can be used for analyzing the power delivery networks that is associated with design of electronic circuits.PDN process 210 can comprise each electromagnetism (EM) model of one or more discontinuity structures of using at least one processor to extract to be used for being associated with circuit design.Power delivery networks (PDN) process 210 can produce at least the three-dimensional adaptive grid model of part based on the EM model that is extracted subsequently.
Instruction set and the subroutine (it can comprise one or more software modules, and it can be stored on the memory storage 216 that is coupled to server computer 212) that can carry out power delivery networks (PDN) process 210 through one or more processors (not shown) and one or more memory modules (not shown) that are incorporated in the server computer 212.Memory storage 216 can comprise (but being not limited to): hard disk drive; Solid-state drive; Tape drive; Optical drive; The RAID array; Random-access memory (ram); And ROM (read-only memory) (ROM).Memory storage 16 can comprise various types of files, and file type comprises (but being not limited to) hardware description language (HDL) file, and its port type that can contain hardware block is described and can be carried out standard.
Server computer 212 can be carried out the web server application, and the example can comprise (but being not limited to): Microsoft IIS, Novell Webserver TM, or
Figure BSA00000443469900091
Webserver, it allows to insert to the HTTP (that is hypertext transfer agreement) of server computer 212 via network 214, and (Webserver is that novell, inc. is at the U.S., other country or the U.S. and other national trade mark; And Apache is the trade mark of Apache's software foundation at the U.S., other country or the U.S. and other national registration).Network 14 can be connected to one or more two grade networks (for example, network 218), and for instance, the instance of said two grade network can comprise (but being not limited to): LAN; Wide area network; Or Intranet.
Server computer 212 (for example can be carried out electric design automation (EDA) application program; EDA application program 220), the instance of electric design automation application program can comprise the electric design automation application program that (but being not limited to) obtains from the assignee of the application's case.EDA application program 220 can with one or more EDA client applications (for example, the EDA client application 222,224,226,228) alternately to be used for Electronic Design optimization.
Power delivery networks (PDN) process 210 can be independently application program, or can be the applet/application program/script of can be mutual with EDA application program 220 and/or can in EDA application program 220, carrying out.Except as the server side process/substituting as the server side process; The PDN process can be client-side process (not shown); It resides at that client electronic installation (hereinafter description) is gone up and can be mutual with EDA client application (for example, in the EDA client application 222,224,226,228 one or more).In addition, the PDN process can be the server side/client-side process of mixing, and it can be mutual with EDA application program 220 and EDA client application (for example, in the client application 222,224,226,228 one or more).Therefore, the PDN process can all or part ofly reside on server computer 212 and/or one or more client electronic installations.
Instruction set and the subroutine (it can be stored on the memory storage 216 that is coupled to server computer 212) that can carry out EDA application program 220 through one or more processors (not shown) and one or more memory modules (not shown) that are incorporated in the server computer 212.
Can be incorporated into instruction set and the subroutine (it can be stored in (difference) and be coupled on the memory storage 230,232,234,236 of client electronic installation 238,240,242,244) that one or more processors (not shown) and one or more memory modules (not shown) in the client electronic installation 238,240,242,244 are carried out EDA client application 222,224,226,228 through (difference).Memory storage 230,232,234,236 can comprise (but being not limited to): hard disk drive; Solid-state drive; Tape drive; Optical drive; The RAID array; Random-access memory (ram); ROM (read-only memory) (ROM), compact flash (CF) memory storage, secure digital (SD) memory storage and memory stick memory storage.The instance of client electronic installation 238,240,242,244 can (for example) comprise (but being not limited to) personal computer 238, laptop computer 240, mobile computing device 242 (for example, smart phone, net book etc.), notebook 244.Through use client application 222,224,226,228, but user's 246,248,250,252 access EDA application programs 220, and can allow user's (for example) to utilize power delivery networks (PDN) process 210.
User 246,248,250,252 can be directly via (for example carrying out client application in the above; Client application 222,224,226,228) device (i.e. (for example), client electronic installation 238,240,242,244) and access EDA application program 220.User 246,248,250,252 can be directly via network 214 or via two grade network 218 access EDA application program 220.In addition, server computer 212 (that is, carrying out the computing machine of EDA application program 220) can be connected to network 214 via two grade network 218 (as illustrated with dotted line linkage lines 254).
Various client electronic installations can directly or indirectly be coupled to network 214 (or network 218).For instance, show that personal computer 238 is directly coupled to network 214 via the hard-wired network connection.In addition, presentation notebook computer 244 is directly coupled to network 218 via the hard-wired network connection.Show that (that is, the radio communication channel of WAP) setting up between 268 266 and be wirelessly coupled to network 214 shows that WAP 268 is directly coupled to network 214 to laptop computer 240 via laptop computer 240 and WAP.For instance, WAP 268 can be IEEE 802.11a, 802.11b, 802.11g, Wi-hole and/or the blue-tooth device that can between laptop computer 240 and WAP 268, set up radio communication channel 66.Show that mobile computing device 242 is wirelessly coupled to network 214 via the radio communication channel of setting up between mobile computing device 242 and the cellular network/bridge 272 270, show that cellular network/bridge 272 is directly coupled to network 214.
So known in the technology, all IEEE 802.11x standards can be used Ethernet protocol and have carrier sense multiple access that the conflict that is used for sharing in the path avoids (that is, CSMA/CA).Various 802.11x standards can be used (that is PSK) modulation or the complementary code keying (that is CCK) modulation,, of (for example) phase-shift keying (PSK).So known in the technology, bluetooth is to allow (for example) mobile phone, computing machine and personal digital assistant to use short-distance wireless to be connected and the telecommunications industry specification that interconnects.
Client electronic installation 238,240,242,244 is executive operating system separately, and the instance of said operating system can comprise the suitable operating system of nanogram this or other in (but being not limited to) Microsoft's Window, Microsoft's Window
Figure BSA00000443469900111
red cap.(windows ce is the trade mark of Microsoft at the U.S., other country or the U.S. and other national registration.)
Referring now to Fig. 3,, the example embodiment of describing according to system 300 of the present invention is provided.System 300 can comprise multiple different assembly, some that said assembly can be in the operation that is configured to carry out PDN process 210 or all.System 300 can comprise grid data processor 302, analyzer/simulator 304 and user interface 306.System 300 also can comprise processor controller 308, some that said processor controller 308 can be in the assembly that is configured to control system 300 or all (for example, the grid data processor 302).System 300 can be through being configured to carry out PDN analytic process 310, and is as described in greater detail below, and can comprise various databases 312 and circuit/model storage area 314.
In certain embodiments, can implement example system illustrated in fig. 3, to form power delivery networks analytic system (PDNS) 300 via data processing instructions.Can come the analysis circuit design by circuit designers operating system 300, so that can make suitable design decision.In certain embodiments, system 300 can be through being configured to data (with relative to the circuit of manufacturing physically) operation.It can comprise data formatting on one or more circuit carrying medias, physically to make said circuit.For instance, in order to the data of structure assembly and interconnect shield pattern, component placement position data, encapsulation of data and in manufacture process essential any other data in order to the circuit product that produces completion.This general inventive concepts is not limited by any specific fabrication process, and under the situation of spirit that does not depart from this general inventive concepts and set scope, any suitable manufacturing data layout can use with this general inventive concepts.
In certain embodiments, grid data processor 302 can comprise any suitable treatment circuit, and under the situation of spirit that does not depart from this general inventive concepts and set scope, any suitable function can be used with this general inventive concepts.In certain embodiments, grid data processor 302 can be through being configured to carry out various operations.Grid data processor 302 can be constructed the net table to define the structure through the grid assembly of interconnection, for example transmission line section equivalent-circuit model and resistive equivalent-circuit model.In certain embodiments, grid data processor 302 can be carried out one or more adaptive meshs program that becomes more meticulous, and whereby initial mesh is further become more meticulous.This general inventive concepts is not limited by the particular of any data processing function of grid data processor 302; And under the situation of spirit that does not depart from this general inventive concepts and set scope, any suitable function can be used with this general inventive concepts.Will be described below in due course in order to carry out the data processing function of this general inventive concepts; For the simple and clear description to general inventive concepts is provided, will omit its implementation detail in addition.
Such as among any embodiment described herein use; " circuit " can individually comprise (for example) hard-wired circuit, programmable circuit, state machine circuit and/or the storage firmware by the instruction of programmable circuit execution, maybe can comprise any combination of above-mentioned each person.Should be understood that at first can software, any operation and/or operability assembly described in any embodiment among this paper are implemented in firmware, hard-wired circuit and/or its any combination.
System 300 can further comprise analyzer 304, and it produces the analysis data that obtain from the simulation of the warp interconnection grid assembly that the grid data processor is produced.Analyzer 304 can be implemented various analytic functions, comprises (but being not limited to) electric power integrity analysis.Can be through having the several portions that comes implementation system 300 like suitable electric design automation (EDA) system of the characteristic of the described feature similarity of preceding text.Can put into practice inventive concepts this through having the existing EDA system that is incorporated herein like novel feature described herein.Can carry out this through the program code of change EDA system and incorporate into, or this incorporates into and can be used as functional module and incorporate into, to come and existing EDA system interaction through (for example) API (API) or other this type of mechanism.
In certain embodiments, system 300 can comprise one or more graphical user interface 306.Some possibility instances of user interface 306 are provided referring to each figure in this article.Yet scope of the present invention is not intended to be limited to these instances.User interface 306 can be communicated by letter with one or more peripheral units (not shown).Peripheral unit can comprise display unit and one or more input medias (for example mouse, tracking ball, stylus, touch-screen and/or touch pads or the like).The processing instruction of hardware unit and the suitable programmed of carrying out by processor 302 be combined to form user interface 306.In some embodiment of this general inventive concepts, use user interface 306 on display, data are presented to the user with significant form; For example pass through the image of the data management interface of circuit diagram, circuit arrangement map, circuit test worktable interface, for example file directory, and other image of user institute identification.
In certain embodiments, user interface 306 can be handled the user of any input media also that be interpreted as can be by the message and the instruction of process controller 308 identifications.User interface 306 can comprise a plurality of users control to provide to the user with the interactivity of system 300 with to the control of system 300.User's control can comprise the described input media of preceding text, and also can comprise the control of the software implementation on the display, for example button, command menu, Text Command item and other suitable software control.Can satisfy the aforementioned description content of user interface 306 through the graphical user interface (GUI) of suitable configurations, for the simple and clear description to general inventive concepts is provided, with the implementation detail of omitting above-mentioned each person.
In a preferred embodiment, system 300 can comprise the interoperability of processor controller 308 with the functional module of coordination and control system 300, so that realize the fully data handling system of operation.Process controller 308 can be through being configured to coordinate the interoperability with the functional module of control system 300, so that realize the fully data handling system of operation.For instance, process controller 308 can receive the data corresponding to user's manipulation of user interface 306, can data layout be changed into order and/or Data Position in the storer, and can this information be communicated to the functional module that is suitable for of system 300.Process controller 308 can receive the treated data of the functional module of self application subsequently, and forwards said data to another functional module, and with this processing of indication on user interface 306.Process controller 360 will be carried out other coordination and control operation according to the embodiment of system 300, and these a little other operations and its embodiment can be embodied with device by the well-known course control method for use of wider range.This general inventive concepts is intended to contain all these a little replacement schemes of process controller 308, comprises multithreading and distributed process control method.
System 300 can comprise and keeps the database 312 that designs, analyzes, revises and make the circuit object of necessary all data of circuit according to deviser's standard.As used herein; Circuit object is a kind of data structure; It can be stored in the storage arrangement to contain the data of circuit component, so that circuit component can be checked, revises, interconnected with other circuit component and in one or more circuit design contexts of being selected by the user, analyzes.This can realize through the abstract technology of suitable data; Make specific circuit elements (for example) to be rendered as the schematic symbols in the schematic clauses and subclauses design context; Be rendered as the part that takies in the topological design context; Be rendered as the route assembly in the circuit routing Design context, and as the component model in circuit analysis and the design check context and provide.Circuit object also can be layering, and circuit object contains through interconnection and has other circuit object of circuit component of assembly that schematic symbols, layout take part and in circuit, be used as the terminal feature model of discrete component with formation whereby.The instance of this circuit object is an operational amplifier.Similarly; Analytic target can be a kind of data structure; It with the data that contain the NOT-circuit element (for example can be stored in the storage arrangement; Cell data), so that the NOT-circuit element can be checked, revised, analyze with other NOT-circuit element interconnection and in one or more circuit design contexts of being selected by the user.To understand; In the description content hereinafter; Only if the statement to the phase negative side is arranged clearly in addition, otherwise operation hereinafter described as on circuit component NOR circuit element, carrying out hinting can be respectively by the assembly of system 300 to contained circuit object or analytic target executable operations.
To understand; The definition given according to preceding text; (for example terminal pad, electric wire, conductive trace and section thereof, interlayer via, power plane and ground plane etc. are regarded as circuit component, and can be included in the corresponding electrical circuits object in the storer for interconnection and electrical distribution assembly.Dummy node also can be stored in the circuit object, and is connected in any equivalent-circuit model between the dummy node.In addition, the circuit carrying media also is the circuit unit that can be included in the circuit object.Therefore, circuit designers can be constructed the electrical distribution circuit on the circuit carrying media of (for example) silicon, and silicon has known permittivity, and it can be stored in the circuit object of circuit carrying media.Can obtain these a little physical constants and circuit unit size from the circuit object of the assembly that forms the electrical distribution circuit, to construct equivalent-circuit model hereinafter described.
In certain embodiments, circuitry stores zone 314 can be the work space of (for example, in the data-carrier store 312) in the storer, storing therein circuit example.Be suitable for like this paper, circuit example be contain check, revise, the data structure in memory of analysis and evaluation circuits or necessary all circuit objects of electronic circuit.To understand, and, can under the situation of spirit that does not depart from this general inventive concepts and set scope, use these a little storage areas of any number to provide like set purpose described herein although single circuitry stores zone only is described among Fig. 3.In addition, can be the static memory structure with the circuitry stores region deviding, or can be by dynamic distribution.This general inventive concepts is not limited to the particular in circuitry stores zone.
Referring now to Fig. 4,, the example embodiment of describing according to system 400 of the present invention is provided.System 400 can allow to analyze the model and/or the data acquisition of number of different types.In this way, system 400 can comprise but be not limited to packaging model 402, chip power model 404, power noise/profile display 406, IC allocation plan 408 and PDN time series analysis model 412.
In certain embodiments, system 400 can be through being configured to carry out PDN analytic process 410, and it can be through the performance (comprising electric power integrality, static state and dynamic IR Drop) that is configured to analyze the composite electric transport net.For instance; Has the composite electric transport net of a plurality of power network from those of various EDA databases; Said a plurality of power network has some irregularly shaped (for example, breach, hole, otch) and sews up electric power, ground connection and signal via, short conductive traces and the frequency dependent dielectric substance of diminishing.
Referring to Fig. 4, chip power model 404 (for example, distribution of current and passive electrical road network table) can obtain from one or more EDA databases once more, and encapsulation power model 402 can obtain from one or more EDA databases.Other template die type (for example, motherboard/subcard) also can be analyzed through common design cycle shown in figure 39 together.PDN analyzes 410 can realize that IRDrop analyzes and PI analyzes to obtain the impedance and the voltage drop result at the DIE side place in the said system.According to analysis result, can pile up through modification/IC assembly layout planning 408 and optimize decoupling capacitor and improve electrical performance." pile up " layout and the type of planning to refer to the layer in the multilayer board like term used herein.
For purposes of the present invention, decoupling capacitor can refer to and use so that the capacitor that the part of electric network or circuit is decoupled each other.The caused noise of other circuit component can be shunted through capacitor, and then reduces its influence to the circuit remainder.Through using the common simulation of whole extraction electric power system model, simulated timing diagrams analysis exactly, i.e. SSN/SSO/EMC/EMI analysis.This further discusses in Figure 43 at Figure 39 in detail.
Referring now to Fig. 5,, the synoptic diagram of describing exemplary compound PDN structure 500 is provided.Any given power delivery networks can comprise extensive multiple shape.For instance, the element among the given PDN often is classified as evenly (for example, parallel-plate waveguide, electric power/ground plane) and non-homogeneous (discontinuity structure of for example, being discerned among this paper).In some embodiments of the invention, for each discontinuity structure, but the derived dyad Green function.In case realized this point, just can use moment Method Analysis to extract the S/Y parameter.These S/Y parameter models can be implemented in the net table, and whole PDN can use one or more circuit simulators to simulate.
Most of electromagnetic problem can be stated according to the nonhomogeneous equation formula:
Equation (1) LF=g
Wherein L is an operational symbol, and it can be differential, integration or integration-differential, and g is known exciting or source function, and F is a unknown function to be determined.In general, method of moment is for being used for the program of solving equation formula (1).Why so the name of said method is because through multiplying each other with appropriate weighting function and carrying out the process that integration adopts method of moment.Method of moment is essentially weighted residual method.Therefore, said method is applicable to and finds the solution differential equation and integral equation.
Being used to use method of moment comes the program of solving equation formula (1) can relate to four steps:
1. derive appropriate integral equation (IE);
2. use basis (or expansion) function and weighting (or test) function that IE conversion (discretize) is the matrix equation formula;
3. to the matrix element evaluation; And
4. find the solution the parameter that matrix equation formula and acquisition are paid close attention to.
The method of moment method possibly need only computation bound value, but not the value in the whole space, thereby it can be significantly more effective aspect computational resource for the problem with less surface/volume.Conceptive, the method for moment method can relate at structure " grid " above modeled surface.Such as preceding text argumentation, method of moment is applicable to the problem that can calculate Green function to it.Green function refers in order to find the solution a class function of the nonhomogeneous differential equation formula of obeying specific starting condition or boundary condition substantially.
Once more referring to Fig. 5, electric power and grounded screen can comprise complicated physical arrangement, and those shown in this and Figure 1A are opposite.For instance, power network can have the breach shape, and can comprise (for example) electric power through hole, grounding through hole and signal via.In addition and/or alternatively, can from breach shape, electric power through hole, grounding through hole, signal via, plane breach, hole, the anti-pad of through hole, horizontal edge, pin, reach through hole, interlayer horizontal edge, plane to, bottom short circuit through hole, cover the breach plane and interlayer breach plane produces coupling effect.For purposes of the present invention, these can be contained in the phrase " uncontinuity model ".Embodiments of the invention provide the geometric configuration of concrete electromagnetism (EM) model that is used for these discontinuity structures are extracted.
Referring now to Fig. 6,, the process flow diagram 600 of describing some example operation consistent with the present invention is provided.Certain operations can comprise geometric configuration extraction 602 and produce three-dimensional adaptive grid 604.Operation can further comprise identification uncontinuity model 606 and electric power and ground plane to 608.In case discerned these models,, further discussed in detail like hereinafter just can use (for example) three-dimensional method of moment technology and Y parameter method 614,616 that it is carried out modeling 610,612 subsequently.Operation can further be included in the upper face of particular conductor and be connected 618 and final PDN simulation 620 with multinode on the lower surface.
Based on the geometric configuration of being extracted, can produce the three-dimensional adaptive rectangular node configuration shown in Fig. 7, the shape that it is described a plurality of layers and makes up with breach, hole, the anti-pad of through hole etc.For instance, Fig. 8 describes the three-dimensional adaptive grid, and wherein each layer has identical grid, and each grid cell need be not aligned with each other at node place, four corners.This can reduce the total number of unit, thereby improves the performance of PDN analytic process.
Referring now to Fig. 9,, the Figure 90 0 that describes according to example embodiment of the present invention is provided.Figure 90 0 shows 3D grid, and it has the vertical view 906 of tile 902, unit 904 and tile and the cross-sectional view 908 of tile.For purposes of the present invention, each grid is by term " tile " expression, and each proximity conductor that is embedded in " tile " is called as " unit ".Power delivery networks (PDN) analytic process can be in order to produce tile and associated cell structures thereof.Further discuss in detail like hereinafter, can use the method for moment method to extract electromagnetism (EM) model (the unit Y parameter that for example, has length and width).
Referring now to Figure 10,, the example embodiment of describing Figure 100 0 of the present invention is provided.Figure 100 0 describes tile structure 1002, and it has five conductive layer L1 to L5.Only opposite in the classic method that an X-Y position has a node with each conductor, power delivery networks analytic process described herein can comprise the method that each conductor wherein has two nodes at an upper portion thereof on surface and the lower surface respectively.Shown in figure 10, upper node is free of attachment to a conductor, and (for example, bottom node L1) is because pass to the bottom node owing to the kelvin effect under the upper frequency has no electric current from upper node.For instance, on each upper face and each lower surface, have different nodes, wherein in tile, have 5 conductive layers.What make an exception is that the layer on top of each tile and bottom layer can only have a node in the portion surface within it.
Like explanation among Figure 10 and according to embodiments of the invention, the for example dummy node of representative illustration on the conductor of Figure 10 capable of using.As used herein, " dummy node " be on the conductor with the opposite position of the physical node that is connected that forms between the conducting element (for example physically the knot of the terminal of attainable circuit component or conducting element).Dummy node can physically away from being connected of physical circuit element, but can serve as physical node about some analytical technology, for example form the interconnection of the grid of equivalent-circuit model, as describing in the example embodiment among this paper.Any use to term " node " among this paper all can refer to dummy node.Dummy node also can define the point that can in the numerical modeling process, belong to the mathematical operation evaluation.For instance, except the equivalent electrical circuit modeling that hereinafter is described, the configuration of dummy node constructed according to the invention can be in order to estimate the circuit design among this paper through for example numerical analysis technology such as the modeling of finite difference time domain, finite element method (FEM) and method of moment.
According to embodiments of the invention, can place the dummy node of any number so that meet any arbitrary shape with the mode of the number that reduces the needed net point of routine techniques.The adaptive mesh of implementing according to the present invention can reduce memory capacity, and also reduces in order to analyze the calculated number of specific circuit design.In certain embodiments of the present invention, dummy node can be aimed at according to coordinate system (for example cartesian coordinate system).
In certain embodiments of the present invention, dummy node can be contained in around each node and define in the zone (for example unit) of unit.As used herein, the unit is for being divided into other unit and/or combining defining with the district of formation individual unit with adjacent unit.The unit can have any suitable shape.
Referring now to Figure 11,, the example embodiment of describing Figure 110 0 of the present invention is provided.Figure 110 0 describes the decomposition of compound PDN structure 1101.After obtaining model to each unit in the tile, upper node can't be directly connected to the bottom node.Therefore, can extract from the uncontinuity model of plane breach and horizontal edge and through hole/pin with link top and lower surface node.(wherein an end short circuit is connected to be used for different nets for detail such as electric power, ground connection and signal via among Figure 11; Shorted on both ends connects to be used for identical net, and two ends are open in the middle of two planes), go up layer plane breach, interlayer plane breach, interlayer plane and horizontal edge and by discontinuity structures such as cutting plane edges.Specifically, PDN structure 1101 can be decomposed into pin 1102, reach through hole 1104, interlayer horizontal edge 1106, plane to 1108, interlayer breach plane 1110, on cover breach plane 1112 and bottom short circuit through hole 1114.It should be noted that these discontinuity structures only provide for exemplary purposes, because other embodiment also belongs in the scope of the present invention.
Referring now to Figure 12,, the example embodiment of describing Figure 120 0 of the present invention is provided.Figure 120 0 describes a tile 1202 being made up of to 1204e a plurality of unit 1204a.In one embodiment; If the layer of this designating unit (for example piles up; The conductance of thickness, two conductors, the dielectric substance that comprises the thickness specific inductive capacity, loss factor) be not extracted (shown in figure 12) as yet; During the model leaching process, can extract the areal model of each " unit " so through method of moment.
Referring now to Figure 13,, the example embodiment of describing Figure 130 0 of the present invention is provided.Figure 13 shows a grid cell that is made up of four fragments.It should be noted that and have different size the unit of (for example, length and width) can have different S/Y/Z parameter models.For instance, can adopt the frequency dependent characteristic of 4 Y parameter models 1302, make and to take careful design measure at the latticed rectangular element 1304 of design phase period analysis.The a plurality of 4 annular fragment Y parameter models that Figure 13 delineation unit model comprises in the unit to be contained.Each fragment can use method of moment to come modeling, wherein on both sides, has full magnetic stripe spare border, and is shown in figure 14.
Referring now to Figure 15,, the example embodiment of describing Figure 150 0 of the present invention is provided.In the past, model extracts and possibly pile up even it has identical layer owing to existing a lot of different units to spend the plenty of time, and is shown in figure 15.Power delivery networks of the present invention (PDN) the analytic process calibration Y parameter model with a unit of cells length and width capable of using.This can be set by programmer, and can be used for the model of element extraction.For purposes of the present invention, this can be called " CELLDEF " in this article.Use CELLDEF, have that identical layer piles up and any unit example of different length/width can obtain need not carrying out under the situation that method of moment field solver repeats, this is the improved model leaching process significantly.Term " field solver " refers to the one or more special procedure that can find the solution in the Maxwell's equation equation substantially.
Referring now to Figure 16,, the example embodiment of describing Figure 160 0 of the present invention is provided.Embodiment of Figure 160 0 explanation, it utilizes method of moment/CELLDEF method to come flat unit is carried out modeling.In certain embodiments, can top and bottom conductor be regarded as normally diminishing material, and can use the method for moment method to confirm equivalent magnetic current.Can be respectively through utilizing Green function to calculate the EM field in three districts (for example, district a, district b and district c).This can be through being stamped in the TEM source port and calculating in the EM field of two port place reflections and transmission and realize.The S/Y parameter can use the method to calculate.After extracting the unit cell model, can not produce new Y model of element example immediately.In the present invention, create calibration Y parameter model to the flat unit example with preseting length and width.Even can obtain the Y parameter model through given length and the width that is used for each example, directly do not produce the Y parameter model in the present invention yet, but with two calibrations parameter---length and width.A specific consumption instance that below is in the circuit meshwork list to be provided: Y_ example n1L1n2L1n1L2n2L2 file=cell.ynp width=2.1 length=4.2; Its file " cell.ynp " is the CELLDEF with unit length=1mm, length=1mm, and n1L1, n2L1, n1L2 and n2L2 are the title of 4 Y parameter nodes.Width and length are from latticed tile/unit or the rectangle plane intended size to structure.Through using power delivery networks described herein (PDN) analytic process, can significantly reduce storage and/or parsing process to Y parameter model example read/write file.Use is from the unit Y parameter of CELLDEF, and simulator can come reconstruct and revise said value in its length of internal condition and width parameter.
Referring now to Figure 17,, the example embodiment of describing Figure 170 0 of the present invention is provided.Embodiment of Figure 170 0 explanation, it describes the cross-sectional view of interlayer breach-planar structure, and said interlayer breach-planar structure comprises plane breach and horizontal edge uncontinuity model.Mentioned like preceding text, the upper face and the node on the lower surface of model of element can directly not be connected to each other, but through plane and through hole uncontinuity model.In Figure 17, there is a breach plane/gap, it has thickness " t c", width " w ", and be embedded in two tops and the base plane.For the middle layer conductor, on the left side, have two node n1L1 and n1L2, and it belongs to " unit 1 " 1702 and " unit 3 " 1706 respectively.Said two node n1L1 and n1L2 are positioned on the left side, and it corresponds respectively to " unit 2 " 1704 and " unit 4 " 1708.These four nodes can be connected with 8 node Y parameter models through the breach areal model.For simplicity, can be through hypothesis n1L1 and n1L2 node at breach position short circuit and then be connected to plane breach uncontinuity model and adopt 6 nodal plane uncontinuity models.According to Figure 17, given breach plane and the width that piles up thereof, and the length of this breach is a variable.Therefore, the Y parameter that is used for breach plane and edge plane only has a variable element---length.Use scale parameter here.It below is the consumption instance that is used for the interlayer breach plane of circuit meshwork list: Y_ example n1L1n2L1n1L2n2L2n1L3n2L3 file=cell.ynp scale=2; Its file " cell.ynp " is the uncontinuity model with unit width=1mm, and n1L1, n2L1, n1L2, n2L2, n1L3 and n2L3 are the title of 6 Y parameter nodes on interlayer breach plane.Scale is the intended size from latticed breach planar structure.
Referring now to Figure 18,, the example embodiment of describing Figure 180 0 of the present invention is provided.Embodiment of Figure 180 0 explanation, it describes a plurality of additional planes uncontinuity models.For instance, Figure 180 0 comprise cover breach areal model 1802, interlayer breach areal model 1804, on cover horizontal edge model 1806 peace in the face of 1808.Shown in figure 18, the number of the needed node of horizontal edge uncontinuity model can be two, and the number of the required node of breach plane discontinuity model can be four, and this is described in further detail below.After extracting flat unit model and plane discontinuity model, can use method of moment calculating and/or frequency dependent kelvin effect function to extract the through hole model.In certain embodiments, can the through hole parameter model not calibrated.Therefore, each dissimilar via stack can have different Y parameter models with size.The through hole model can be subdivided into some types, and is shown in figure 19.
Referring now to Figure 19,, the example embodiment of describing Figure 190 0 of the present invention is provided.Embodiment of Figure 190 0 explanation, it describes some through holes in the existing dissimilar through hole in the power delivery networks.In certain embodiments, the through-hole structure that comprises electric power through hole, grounding through hole and signal via between two planes can come modeling exactly through method of moment.Shown in figure 19, model 1 to 3 indication plane to and through hole/pin model, and the through hole model of model 4 to 5 indication with microstrip configurations.
Referring now to Figure 20,, the example embodiment of describing Figure 200 0 of the present invention is provided.Embodiment of Figure 200 0 explanation, it is described according to through hole cylinder port of the present invention.In this embodiment, cylinder port can comprise two nodes, node on the upper layer and another node on lower layer.Can define cylinder port and be connected to the rectangular element that is adjacent to it, this explains in Figure 21.In other words, through hole can be connected to the adjacent plane cell node.In addition, but the upper node on the planar conductor in the circuit meshwork list of being created be in the same place with bottom node short circuit, shown in figure 22.Figure 22 describes a through hole and passes the planar structure with an anti-pad, this moment anti-pad enough little and during Mesh Processing, ignore with the acquisition superior performance.Remainder is the single Plane Gridding Model with any other lap.This Y parameter model can use kelvin effect formula Zs to obtain.In certain embodiments, the surface impedance between two nodes can be transferred in the two node Y parameter models.Then, calibration Y parameter model " SKINDEF " can be used for modeling is carried out on single plane.Except interstitial content can be merely two, it can have identical description.
In certain embodiments, be similar to the plane, can adopt skin model to handle single plane/shape and structure model.At first, shape also can be come gridding through rectangular node, because each grid can be represented by four Y parameter skin models.For purposes of the present invention; The Y parameter skin model can be derived from the SKINDEF Y parameter model with a scale (width/height) value, and the SKINDEF model that wherein has unit scale=1.0 extracts as following equation (2) through analyzing the all-wave method:
Z s = k σ e kt + e - kt e kt - e - kt - - - ( 2 )
Wherein and t are the thickness on single plane.For this SKINDEF model, the skin model with different scales can use its actual width/height recently to obtain, and this can be similar to CELLDEF instance provided above.Extracting unit skin model (SKINDEF) afterwards, can produce new Y skin model example.For purposes of the present invention, even can obtain the Y parameter model through the given width/height that is used for each example, also available calibration parameter---width/height produces the Y parameter model, and this can create from single flat unit example.Below be the consumption instance in the circuit meshwork list: Y_ example n1L1n2L1 file=skin.ynp scale=0.5, its file " skin.ynp " be for having the SKINDEF of unit scale=1.0, and n1L1 and n2L1 are the title of 2 Y parameter nodes.Scale is from the intended size of latticed rectangle monoplane structure (for example, width/height).Through using the method, can significantly reduce the storage and the parsing process that read and/or write file to Y parameter model example.Use is from the unit Y parameter of SKINDEF, and simulator can come reconstruct and revise said value at its scale parameter of internal condition.
Referring now to Figure 23,, the example embodiment of describing Figure 23 00 of the present invention is provided.Embodiment of Figure 23 00 explanation, the power delivery networks analytic process that it describes among this paper to be described.After to the plane, plane discontinuity, the single plane with surface impedance and through hole and pin configuration being obtained the Y parameter model, the PDN analytic process can be incorporated the some or all of assemblies that have in the assembly shown in Figure 23 into.Through on the assembly pin, importing excitaton source, can use three-dimensional stigmatometer to keep watch on or inspect voltage drop and impedance on any measurement pin, further discuss in detail like hereinafter.
Referring now to Figure 24,, the example embodiment of describing user interface 2400 of the present invention is provided.Embodiment of user interface 2400 explanations, it can power delivery networks analytic process according to the present invention use.Shown in figure 24, user interface 2400 can allow deviser's electrification and ground connection label 2401 to dispose electric power and grounded screen to analyze being used for.UI 2400 can allow electric power and the grounded screen of deviser in design to assign correct voltage.This " identification DC net " capable of using label 2402 is accomplished.UI 2400 also can allow the deviser to select electric power and grounded screen to analyze.This " selecting the DC net " capable of using label 2404 is accomplished.UI 2400 also can allow the deviser to use " assembly and port " label 2406 to come assigned source (VRM) or remittance (virtual) to excite port.UI2400 also can allow the deviser to pass through to utilize " xsect " label 2408 to define the xsect with indispensable thickness, conductance, specific inductive capacity and loss factor.UI 2400 can further allow the deviser to use " library management " label 2410 to come the repository path to comprise all required models.UI 2400 also can allow the deviser to use " model appointment " label 2412 to assign appropriate model to all associated components.UI 2400 also can allow the deviser to define all pin/via pad with correct boring and rule/heat/anti-pad parameters to pile up.Extra and/or alternative option also belongs in the scope of the present invention.
Referring now to Figure 25,, the example embodiment of describing user interface 2500 of the present invention is provided.Embodiment of user interface 2500 explanations, it can power delivery networks analytic process according to the present invention use.As shown in Figure 25, user interface 2500 can allow the deviser to pass through to select " decoupling capacitor " label 2501 to dispose one or more decoupling capacitors.UI 2500 can provide all the existing capacitors in the design to the deviser." net wave filter " label 2502 can be used for the decoupling capacitor of particular power net in order to demonstration and configuration.In order to dispose the capacitor in other storehouse, can select " storehouse label " 2504.In case be activated, just can select additional capacitor analysis.Can on each capacitor, use right click to activate and obtain extra popup menu order.UI 2500 provides the ability of using label 2508 to add, delete and edit capacitor model where necessary to the deviser.Extra and/or alternative option also belongs in the scope of the present invention.
Referring now to Figure 26,, the example embodiment of describing user interface 2600 of the present invention is provided.The embodiment that user interface 2600 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 26, user interface 2600 can allow the deviser to use " assembly and port " label 2602 to be selected arrangement of components port information (for example, port type, excite and divide into groups).UI 2600 can comprise assembly window 2604, and it can allow the deviser to select assembly so that in display panel 2606, show corresponding pin/port information.UI 2600 can comprise " editor's profile " label 2608, and it can allow the deviser is that common design flow defines extra encapsulation and/or nude film profile.UI 2600 can further comprise " return path " label 2610, and it can allow the deviser is each the electric power pin appointment return path in the selected power network.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 27,, the example embodiment of describing user interface 2700 of the present invention is provided.The embodiment that user interface 2700 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 27, user interface 2700 can comprise " analysis " label 2702 for 2701 times at " electric power and ground connection " label.Analyzing tags 2702 can comprise multiple option, comprises (but being not limited to) grid, static IRDrop, PI plane and PI network analysis.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 28,, the example embodiment of describing user interface 2800 of the present invention is provided.The embodiment that user interface 2800 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 28, user interface 2800 is described return path configuration, and it can show after the activation from the return path label 2610 of Figure 26 at once.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 29,, the example embodiment of describing user interface 2900 of the present invention is provided.The embodiment that user interface 2900 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 29, user interface 2900 is described return path configuration, and it can show after the activation from the port packet label 2612 of Figure 26 at once.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 30,, the example embodiment of describing user interface 3000 of the present invention is provided.The embodiment that user interface 3000 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 30, user interface 3000 is depicted in the demonstration after the activation of " generally " label 3001 that " preference " show.But UI 3000 can comprise some user's edit field, and wherein some can comprise (but being not limited to) delta current, mains ripple, voltage (DC) IRDrop, current threshold, density threshold, temperature rising threshold value, target impedance shape (acquiescence): corner frequency and slope (dB/ ten octaves), decoupling capacitor: inductance and effective radius are installed.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 31,, the example embodiment of describing user interface 3100 of the present invention is provided.The embodiment that user interface 3100 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 31, user interface 3100 is depicted in the demonstration after the activation of " simulation " label 3101 that " preference " show.But UI 3100 can comprise some user's edit field, and wherein some can comprise scanning number and duration and the resolving time in the time domain in (but being not limited to) bottom frequency, upper frequencies, scanning scale and the frequency domain.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 32,, the example embodiment of describing user interface 3200 of the present invention is provided.The embodiment that user interface 3200 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 32, user interface 3200 is depicted in the demonstration after the activation of " field solver " label 3201 that " preference " show.But UI 3200 can comprise some user's edit field, and wherein some can comprise (but being not limited to) gridding information 3202 and field solver information 3204.UI 3200 can allow the deviser to select to consider the hole in the shape of pin/through hole in computing grid information 3202 and when meticulous, regular, rough and customization option are provided.For field solver 3204, but can provide all-wave model option and editing environment temperature and surface slightly to release souls from purgatory field.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 33,, the example embodiment of describing user interface 3300 of the present invention is provided.The embodiment that user interface 3300 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 33, user interface 3300 is depicted in the demonstration after the activation that " field solver " show " ignoring layer " label 3206 of 3201.UI 3300 can be the deviser and provides and be chosen in the option of ignoring which layer during the simulation.In case select given layer, just can in simulation, ignore all shapes and path in the selected layer.Shown in figure 33, for example other option such as layer title and type also can be provided.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 34,, the example embodiment of describing user interface 3400 of the present invention is provided.The embodiment that user interface 3400 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 34, user interface 3400 is depicted in the option that activation (for example the right click of mouse button etc.) back deviser can use.The selection of the indivedual options that provide among Figure 34 can cause the one or more generation in the user interface described herein.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 35,, the example embodiment of describing user interface 3500 of the present invention is provided.The embodiment that user interface 3500 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 35, user interface 3500 is depicted in the option that activation (for example the right click of mouse button etc.) back deviser can use.The selection of the indivedual options that provide among Figure 35 can cause the one or more generation in the user interface described herein.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 36,, the example embodiment of describing user interface 3600 of the present invention is provided.The embodiment that user interface 3600 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 36, user interface 3600 is depicted in and selects the demonstration afterwards of impedance option.More particularly, UI 3600 is illustrated in top and an impedance at lower surface place on the power supply profile.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 37,, the example embodiment of describing user interface 3700 of the present invention is provided.The embodiment that user interface 3700 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 37, user interface 3700 is depicted in colored legend option 3602 demonstration afterwards of selecting Figure 36.As shown in Figure 37, the deviser can select from impedance, voltage, electric current, density and temperature rising form.Can give the indivedual colors in the colored legend with specific numerical assignment.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 38,, the example embodiment of describing results set 3800 of the present invention is provided.The impedance curve that results set 3800 explanations show to each assembly pin of simulating.The information that results set 3800 is provided in the user interface 3700 based on Figure 37 at least in part and producing.After selecting other option, can show a large amount of additional result with graphics mode at once from UI 3700.
Referring now to Figure 39,, the example embodiment of describing chip-encapsulation-plate configuration 3900 of the present invention is provided.The configuration that is provided among Figure 39 describes to encapsulate 3902, PCB (subcard) 3904 and PCB (motherboard) 3906.Together with the PDN model under the plate level, encapsulation can be that the common design flow of systematic electricity is connected through mapped file with chip power model and other chain connecting plate PDN model.Such as before referring to Fig. 4 argumentation; From the chip power model 404 of one or more EDA application programs (for example; Distribution of current and passive electrical road network table), from the encapsulation power model 402 of one or more EDA application programs, other template die type (for example; Motherboard/subcard) also can come to analyze together through common design flow, shown in figure 39.PDN analyzes 410 and can allow IRDrop to analyze and the PI analysis, obtains impedance and voltage drop result with the DIE side in system.According to analysis result, can pile up through modification/IC assembly layout planning 408 with optimize decoupling capacitor and improve electrical performance.Through simulate simulated timing diagrams analysis exactly (for example, (SSO), Electromagnetic Compatibility and electromagnetic interference (EMI) are exported in switching noise (SSN), switching simultaneously simultaneously) jointly with the whole electric power system model that extracts.
Referring now to Figure 40,, the example embodiment of describing user interface 4000 of the present invention is provided.The embodiment that user interface 4000 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 40, user interface 4000 can allow the deviser to use " assembly and port " label 4002 to be selected arrangement of components port information (for example, port type, excite and divide into groups).UI 4000 can comprise assembly window 4004, and it can allow the deviser to select assembly so that in display panel 4006, show corresponding pin/port information.UI 4000 can comprise " editor's profile " label 4008, and it can allow the deviser is that common design flow defines extra encapsulation and/or nude film profile.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 41,, the example embodiment of describing user interface 4100 of the present invention is provided.The embodiment that user interface 4100 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 41, user interface 4100 is illustrated in an embodiment that possibly show that can produce after the activation of editor's profile label 4008 of Figure 40.Shown in figure 41, UI 4100 can comprise packaging model information 4102, nude film model information 4104 and be connected panel information 4106.Packaging model information 4102 can comprise (but being not limited to) device name, packaging model identification and PTMF label 4108.Nude film model information 4104 can comprise (but being not limited to) nude film title, nude film model, nude film load and PTMF label 4110.Connect panel 4106 and can comprise plate at least to encapsulating connectivity option, being encapsulated into nude film connectivity option and ABSORPTION CURRENT option.Extra and/or alternative selection also within the scope of the invention.
Referring now to Figure 42,, the example embodiment of describing user interface 4200 of the present invention is provided.The embodiment that user interface 4200 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 42, user interface 4200 is depicted in the demonstration that can produce after the activation of encapsulation PTMF label 4108 shown in Figure 41.UI 4200 comprises pin Map Interface 4202, the interpolation and/or the deletion of some assembly that it can allow to design.UI 4200 can further comprise can select connectivity option 4204, in this particular instance, selects " plate " option.As shown in Figure 42, in case selected specific components (for example " U1 "), corresponding pin just is provided in pin display part 4206.Pin display part 4206 can comprise some fields, comprises (but being not limited to) pin name, pin use, user name, port name, Pin locations and cell name.UI 4200 can further comprise the option that adds and/or delete indivedual pins and port.
Referring now to Figure 43,, the example embodiment of describing user interface 4300 of the present invention is provided.The embodiment that user interface 4300 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 43, user interface 4300 is depicted in the demonstration that can produce after the activation of encapsulation PTMF label 4110 shown in Figure 41.UI 4300 comprises pin Map Interface 4302, the interpolation and/or the deletion of some assembly that it can allow to design.UI 4300 can further comprise can select connectivity option 4304, in this particular instance, selects " chip " option.As shown in Figure 43, in case selected specific components (for example " U2 "), corresponding pin just is provided in pin display part 4306.Pin display part 4306 can comprise some fields, for example the field described referring to Figure 42 of preceding text.Similarly, UI 4300 also can comprise the option that adds and/or delete indivedual pins and port.
At some embodiment, port or pin terminals mapped file (PTMF) are meant one type the mapped file that can use according to the present invention.Hereinafter provides the instance of the part of PTMF.
[connection] plate U1151
[connection type] PCB
[power network]
Figure BSA00000443469900241
[connection] chip U2 298
[connection type] DIE
[power network]
V48 U2_V48 CVDD -4.100000e+003 1.900000e+003 DIE_PAD
V44 U2_V44 CVDD -3.300000e+003 1.900000e+003 DIE_PAD
V40 U2_V40 CVDD -2.500000e+003 1.900000e+003 DIE_PAD
Referring now to Figure 44,, the example embodiment of describing system diagram 4400 of the present invention is provided.The embodiment that Figure 44 00 explanation can power delivery networks analytic process according to the present invention be used.As shown in Figure 44, embodiment as herein described can allow one or more results of showing that power delivery networks (PDN) is analyzed.In certain embodiments, can show 3-D view 4402, it describes to use one or more among the result 4404 that the PDN of electromagnetism stigmatometer 4406 analyzes.In certain embodiments, EM stigmatometer 4406 can receive stratum reticulare and/or background information 4408, and can be mutual with the software (eda software 4410 that comprises other type) of a large amount of other types.
Referring now to Figure 45,, shows the example embodiment of the user interface 4500 consistent with the present invention.UI 4500 can be through being configured at least in part based on from the result of power delivery networks analysis as herein described and show one or more 3-D views.UI 4500 can comprise 3 d display 4502, and it can be through being configured to show real image.UI 4500 can further comprise some additional menus, and wherein some can comprise (but being not limited to) observability menu 4504, output menu 4506, threshold menu 4508 and display menu 4510.
In certain embodiments, UI 4500 can be through being configured in time domain and/or frequency domain, to produce three-dimensional animation.UI 4500 can comprise data layout designator 4512, and it can allow to select between voltage, electric current, density and temperature or the impedance in the frequency domain of deviser in time domain.The power delivery networks analytic process can be used this selection so that produce image in display panel 4502, showing.UI 4500 can further comprise display pattern designator 4514, and it can allow the deviser between comb mesh pattern and filling pattern, to select.UI 4500 also can comprise the option that uses 2D/3D to select label 4515 between two dimension and three-dimensional animation, to select.In addition and/or alternatively, can be the deviser additional option is provided, wherein some can comprise that (but being not limited to) makes that said animation is play, stopped, F.F. and rewinding, as being described by 4516 on label of control.In certain embodiments, the PDN analytic process can allow to adjust film velocity, but for example via user's edit field that film velocity can be set for unit frame/second.In certain embodiments, the PDN analytic process can allow to use pivoting label 4518 to rotate institute's images displayed.For instance, said process can allow the deviser through selecting pivoting label 4518 or through pinning " ctrl " key and for example utilizing peripheral unit such as mouse to rotate three-dimensional result.
In certain embodiments, UI 4500 can comprise camera option, and for example the camera drop-down menu 4520.Camera drop-down menu 4520 can be the deviser provide with camera position guiding at the top, the option of bottom, forward and backward, left and right position.In addition or alternatively, UI 4500 can provide the ability that moves image with amplifying power and in display panel 4502 of dwindling.
In certain embodiments, it is functional that UI 4500 can comprise worst condition, and for example the worst condition label 4522.In arbitrary given position, can change impedance according to the variation of Frequency point, worst condition can be corresponding to the maximum impedance value under the whole frequency range.UI 4500 can be through being configured to after the activation of worst condition label 4522, to produce this value at once.For time domain, can change voltage, electric current, current density value according to the time, worst condition can be corresponding to the maximal value that surpasses threshold value to all time steps.It should be noted that functional can during animation mode (three-dimensional) or picture mode (two dimension), the application described herein.
Referring now to Figure 46,, the embodiment that describes to export menu 4600 of the present invention is provided.In this specific embodiment, output menu 4600 is shown as and has the net information that is shown.This can demonstration at once after selecting net information labels 4602.As shown in Figure 46, some possibility instances of net information can comprise (but being not limited to) voltage, impedance, IRDrop, electric current, density and temperature.Net information shows that the threshold value that can allow the deviser to have the information that changes each type is so that draw the option of better value.
Referring now to Figure 47,, the embodiment that describes to export menu 4700 of the present invention is provided.In this specific embodiment, output menu 4700 is shown as and has the information of piling up that is shown.This can show after selecting stacked labels 4702 at once.Some of as shown in Figure 47, piling up information maybe instances can comprise (but being not limited to) layer title, type, material, thickness, conductance, dielectric and loss.The network information shows that the threshold value that can allow the deviser to have the information that changes each type is so that draw the option of better value.Some comprised coloud coding types in the field show that it can use the colored legend among Figure 49 to be provided with, and hereinafter describes in further detail.In certain embodiments, power delivery networks analytic process of the present invention also can allow the deviser to import one or more background papers.
Referring now to Figure 48,, the embodiment that describes observability menu 4800 of the present invention is provided.Observability menu 4800 can comprise the demonstration of the some or all of layers of indication design.Observability menu 4800 can allow the deviser to show or hide layer information.For instance, and as shown in Figure 48, the observability menu can comprise pit, pin, through hole, background and Total Options, and it can be hidden according to deviser's preference or show.
Referring now to Figure 49,, the embodiment that describes colored legend 4900 of the present invention is provided.Colored legend 4900 can allow the deviser that one or more colors are assigned to a particular value, as shown in Figure 49.Can take the circumstances into consideration changing format and method, so that carry out and the comparing more accurately of desired value.
Referring now to Figure 50,, provide the threshold value of describing of the present invention to show 5000 embodiment.Threshold value shows that 5000 can comprise form, net and threshold information.Threshold value shows that 5000 can further be included in the option (that is show or hide threshold value plane under three dimensional pattern) of display plane in the painting canvas.Threshold value shows that 5000 can allow the deviser to change threshold value, so that change the position on threshold value plane.
Referring now to Figure 51,, the embodiment that describes display menu 5100 of the present invention is provided.Display menu 5100 can comprise background, transparency and brightness option.Display menu 5100 can allow the deviser to upgrade the transparency and/or the brightness of work space backcolor and destination object, to obtain desired display result.
In certain embodiments, three-dimensional stigmatometer described herein can allow the interoperability with various EDA products.For instance, three-dimensional stigmatometer can be permitted the easy transmission from the data of arbitrary or all products that can buy from assignee of the present invention.These data can directly directly be sent to the three-dimensional stigmatometer described herein from other eda tool.
In addition and/or alternatively, in certain embodiments, three-dimensional stigmatometer can allow the deviser to pass through to double-click (or otherwise activating) object ripple and select other one by one partial wave.Therefore, can in single window, show the selection partial wave.The deviser can then concentrate on the details of partial wave, and is not interfered because of in display window, having other ripple.
Referring now to Figure 52,, the embodiment that describes menu frame 5200 of the present invention is provided.Control label 4516 shown in menu frame 5200 and/or Figure 45 can be the deviser option of inspecting the data variation under animation mode or the picture mode is provided.In addition and/or alternatively, menu frame 5200 can allow the deviser to locate particular frame.In certain embodiments, the image that three-dimensional stigmatometer produced can be exported under animation mode or picture mode.
Referring now to Figure 53,, the process flow diagram of describing with power delivery networks analytic process uniform operation of the present invention 5300 is provided.The PDN process can comprise: electromagnetism (EM) model (5302) of each of one or more discontinuity structures that use at least one processor to extract to be used for being associated with circuit design; And produce at least in part three-dimensional adaptive grid model (5304) based on the EM model that is extracted.A large amount of other operations also within the scope of the invention.
In some embodiments of the invention, the power delivery networks analytic process is provided.Based on the physical layout of specifying electric power and grounded screen, utilize the electric power and the grounded screen gridding that the three-dimensional adaptive spatial decomposition of the rectangular node node in the mimic channel are made appointment.This can realize that said discontinuity structure can comprise (but being not limited to) hole when considering discontinuity structure, said hole comprises the anti-pad of electric power, ground connection and signal via, otch, breach etc.
In certain embodiments; And according to the three-dimensional adaptive grid generation result; The power delivery networks analytic process can comprise all-wave---method of moment field solver, its can through optimize with extract through hole efficiently and through the plane of gridding with plane discontinuity and be its modeling.
In certain embodiments, for acceleration model extracts and the PDN simulation, can use calibration Y parameter model to improve the efficient of plane, plane breach and plane edge model with different size with length and width parameter.In addition, as described herein, the power delivery networks analytic process can utilize unique upper and lower plane surface node to connect reach through hole and plane discontinuity model to the plane through gridding.
In certain embodiments, the result from the power delivery networks analytic process can show in 3 D electromagnetic (EM) stigmatometer with physical layout background and intersection probe function intuitively.Teaching of the present invention can be used for simulating various power delivery networks (PDN) so that impedance and voltage drop analysis to be provided efficiently.Power delivery networks analytic process described herein also can provide the high power capacity and the high accuracy of plate-encapsulation-chip/plate-plate circuit design and checkout procedure.
Be appreciated by those skilled in the art that, can under the situation that does not break away from the spirit or scope of the present invention, make various modifications and variation in an embodiment of the present invention.Therefore, if said modification and changing in the scope of appended claims and equipollent thereof, embodiments of the invention are set so contains said modification and variation.

Claims (35)

1. computer-implemented method that is used to analyze the power delivery networks (PDN) that is associated with design of electronic circuits, it comprises:
Use each electromagnetism (EM) model in one or more discontinuity structures that at least one processor extracts with said circuit design is associated;
Produce at least partly based on the said three-dimensional adaptive grid model that extracts electromagnetic model.
2. computer-implemented method according to claim 1, wherein extraction comprises the execution moment Method Analysis.
3. computer-implemented method according to claim 1, wherein said discontinuity structure comprises at least one in the following: breach shape, electric power through hole, grounding through hole, signal via, plane breach, hole, the anti-pad of through hole, horizontal edge, pin, reach through hole, interlayer horizontal edge, plane to, bottom short circuit through hole, on cover breach plane and interlayer breach plane.
4. computer-implemented method according to claim 2, wherein extraction further comprises the areal model that extracts the conductor that is adjacent to given grid.
5. computer-implemented method according to claim 1, it further comprises carries out electric power integrality (PI) analysis.
6. computer-implemented method according to claim 5; Wherein said EM model comprises one or more conductors; In said one or more conductors each has first surface and second surface, and each in the said surface comprises at least two nodes.
7. computer-implemented method according to claim 1, it comprises that further producing warp calibrates the Y parameter model.
8. computer-implemented method according to claim 7, wherein said have through the setup unit unit width with through the setup unit unit length through calibration Y parameter model.
9. computer-implemented method according to claim 8, it comprises that further re-using said warp calibration Y parameter model extracts extra electromagnetic model.
10. computer-implemented method according to claim 1, wherein extraction comprises the modeling of all-wave electromagnetic field.
11. computer-implemented method according to claim 10, the wherein following equation of extraction and application:
Z s = k σ e kt + e - kt e kt - e - kt
Wherein
Figure FSA00000443469800012
and t are the thickness on single plane.
12. computer-implemented method according to claim 1, it further comprises in static IRDrop analysis of execution and the dynamic IR Drop analysis at least one.
13. computer-implemented method according to claim 10 is wherein extracted to comprise and is used a kind of unique method of moment to extract areal model, plane discontinuity model, pin model and through hole model.
14. computer-implemented method according to claim 1, wherein said discontinuity structure has dissimilar, and said each in dissimilar has different geometries.
15. computer-implemented method according to claim 8, it comprises that further part is calculated at least one Green function based on moment Method Analysis at least.
16. a computer program of staying on the computer-readable storage medium that stores a plurality of instructions above being stored in, said instruction causes said processor execution to comprise the operation of the following when being carried out by processor:
Use at least one processor to extract each electromagnetism (EM) model in one or more discontinuity structures that are associated with circuit design;
Produce at least partly based on the said three-dimensional adaptive grid model that extracts electromagnetic model.
17. computer-readable storage medium according to claim 16, wherein extraction comprises the execution moment Method Analysis.
18. computer-readable storage medium according to claim 16, wherein said discontinuity structure comprises at least one in the following: breach shape, electric power through hole, grounding through hole, signal via, plane breach, hole, the anti-pad of through hole, horizontal edge, pin, reach through hole, interlayer horizontal edge, plane to, bottom short circuit through hole, on cover breach plane and interlayer breach plane.
19. computer-readable storage medium according to claim 17, wherein extraction further comprises the areal model that extracts the conductor that is adjacent to given grid.
20. computer-readable storage medium according to claim 16, it further comprises the instruction that is used to carry out electric power integrality (PI) analysis.
21. computer-readable storage medium according to claim 20; Wherein said EM model comprises one or more conductors; In said one or more conductors each has first surface and second surface, and each in the said surface comprises at least two nodes.
22. computer-readable storage medium according to claim 16, it further comprises and is used to produce through calibrating the instruction of Y parameter model.
23. computer-readable storage medium according to claim 22, wherein said have through the setup unit unit width with through the setup unit unit length through calibration Y parameter model.
24. computer-readable storage medium according to claim 23, it comprises that further being used to re-use said warp calibrates the instruction that the Y parameter model extracts extra EM model.
25. computer-readable storage medium according to claim 16, wherein extraction comprises all-wave EM field modeling.
26. a computing system, it comprises:
At least one processor;
At least one memory architecture, it is connected with said at least one processor with mode of operation;
First software module, it carries out electromagnetism (EM) model of wherein said first software module each in being configured to extract one or more discontinuity structures that are associated with circuit design by said at least one processor; And
Second software module, it is carried out by said at least one processor, and wherein said second software module is through being configured to produce at least partly based on the said three-dimensional adaptive grid model that extracts the EM model.
27. computing system according to claim 26, wherein said first software module are further through being configured to carry out moment Method Analysis.
28. computing system according to claim 26, wherein said discontinuity structure comprises at least one in the following: breach shape, electric power through hole, grounding through hole, signal via, plane breach, hole, the anti-pad of through hole, horizontal edge, pin, reach through hole, interlayer horizontal edge, plane to, bottom short circuit through hole, on cover breach plane and interlayer breach plane.
29. computing system according to claim 27, wherein said first software module are further through being configured to extract the areal model of the conductor that is adjacent to given grid.
30. computing system according to claim 26, it further comprises through being configured to carry out the 3rd software module that electric power integrality (PI) is analyzed.
31. computing system according to claim 30; Wherein said EM model comprises one or more conductors; In said one or more conductors each has first surface and second surface, and each in the said surface comprises at least two nodes.
32. computing system according to claim 26, it further comprises through being configured to produce the 4th software module through calibration Y parameter model.
33. computing system according to claim 32, wherein said have through the setup unit unit width with through the setup unit unit length through calibration Y parameter model.
34. computing system according to claim 33, it further comprises through being configured to re-use the said five weaknesses part module of extracting extra EM model through calibration Y parameter model.
35. computing system according to claim 26, wherein said first software module are further through being configured at least partly to use all-wave EM field modeling to extract.
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