lt power cad help

8/13/2019 Lt Power Cad Help

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LTpower CADTM Desi gn ToolUser s Gui de

[email protected]

Ver . 1. 2. 2. 1

Dec 2011

Note: The Linear Technology LTpowerCAD Design Tool is a powerful power supply design program forselected Linear Technology products. This document serves as a guide for the Linear Technology LTpo-werCAD Design Tool. It explains the various functions that are supported by the LTpowerCAD DesignTool.

Copyright 2011, Linear Technology Corporation. All rights reserved.


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TABLE OF CONTENTS

TableofContents...................................................................................................................................................... 21 LinearTechnologyCorporationLTpowerCADDesignToolLicenseAgreement/Disclaimer............................32 SoftwareRequirementsandInstallation.......................................................................................................... 4

2.1 System&SoftwareRequirements.......................................................................................................................... 42.2 Installation.............................................................................................................................................................. 4

3 GettingStartedwithLTpowerCADDesignTool.............................................................................................. 73.1 StartaNewDesign.................................................................................................................................................. 7

3.1.1 SearchandSelectaLinearTechnologyProduct...........................................................................................................................83.1.2 DesignSpreadsheet.....................................................................................................................................................................103.1.3 DesignPowerStageComponents...............................................................................................................................................143.1.4 DesignCompensationLoop.........................................................................................................................................................163.1.5 WrapUpandSummary...............................................................................................................................................................17

3.2 OpenExistingDesign............................................................................................................................................. 184 UpdatetheLTpowerCADDesignToolLibrary.............................................................................................. 195 Appendix........................................................................................................................................................ 20

5.1 LoadTransientPrediction...................................................................................................................................... 205.2 LTspiceTMSimulation.............................................................................................................................................. 205.3 ComponentLibrary............................................................................................................................................... 215.4 PCBLayoutExample.............................................................................................................................................. 235.5 TheAccuracyoftheLTpowerCADDesignTool.................................................................................................... 235.6 LTpowerCADDesignToolSupportedLTCProductsList....................................................................................... 245.7 LinearTechnologyCorporationLTpowerCADDesignToolLicenseAgreement................................................... 245.8 LTpowerCADDesignToolContactInformation................................................................................................... 285.9 LTpowerCADDesignToolReleaseInformation................................................................................................... 28


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1 LI NEAR TECHNOLOGY CORPORATI ON LTPOWERCADDESI GN TOOL LI CENSE AGREEMENT/ DI SCLAI MER

Welcome to the Linear Technology LTpowerCAD Design Tool. The LTpowerCAD Design Tool isa powerful power supply design tool program that significantly eases the tasks of selecting compo-nent values, estimating power loss and efficiency, and optimizing the compensation loop.

This design tool is copyrighted. In accordance with the terms and conditions of the LTpowerCADDesign Tool License Agreement in the Appendix, upon acceptance of the agreement, you will begranted a non-exclusive, non-transferable, royalty-free right solely to design supplies with LinearTechnology products. Linear Technology Corporation owns the LTpowerCAD Design Tool. You maynot redistribute, adapt, translate, reverse engineer, decompile, or disassemble the LTpowerCAD

Design Tool. Upgrades, modifications, or repairs to this design tool will be strictly at the discretion ofLinear Technology.

As always, Linear Technology has made the best effort to support our customers. However, due tothe external component value variations, it remains the customers responsibility to verify the pro-gram's calculation results by actually building the circuit and evaluating its performance.

Note:

Please note that the current version of the LTpowerCAD Design Tool only supports a limited num-

ber of Linear Technology Monolithic and uModule Parts. For a full list of Linear Technology productsand selection guideline, please visit www.linear.comor contact your local sales representative.


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2 SOFTWARE REQUI REMENTS AND I NSTALLATI ON2.1 SYSTEM & SOFTWARE REQUIREMENTS

The following system & software is required for installing and running the LTpowerCAD Design Toolfor Microsoft Windows. You must update your system to meet this minimum requirement before run-ning the LTpowerCAD Design Tool.

Microsoft Windows-based PC with Windows XP SP2 or higher operation system. Microsoft Office Excel 2000, 2003 or 2007 Microsoft .NET Framework 3.5 and plus

The Microsoft .NET Framework can be downloaded and installed at:http://www.microsoft.com/downloads/details.aspx?FamilyID=d0e5dea7-ac26-4ad7-b68c-

fe5076bba986&displaylang=en

For additional information, please contact Linear Technology LTpowerCAD development group at:[email protected]

2.2 INSTALLATION

1. Double click Setup.exe to start the LTpowerCAD Design Tool Setup Wizard.

2. Click the Next button.


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3. Choose I Agree and click the Next button.

4. Select the folder to which to install LTpowerCAD Design Tool and click the Next button. Thedefault folder for Design Tool is C:\Program Files\Linear Tech\LTpowerCAD\.


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5. Click the Next button to start the installation.

6. Click the Close button to close the LTpowerCAD Design Tool Setup Wizard.


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3 GETTI NG STARTED WI TH LTPOWERCAD DESI GN TOOLThe LTpowerCAD Design Tool is a powerful power supply design tool program that significantly

eases the tasks of designing a power supply, from designing power components to estimating effi-ciency and optimizing the control compensation loop. To start a new design or review an existing de-sign, simply click the LTpowerCAD icon from your Windows Desktop or the Start Menu.

The LTpowerCAD Design Tool main menu includes five functional buttons.

Start New Design button is used to start a new power converter design project Open Existing Design button is used to open and review an existing design project from a

user specified location Help button is used to view the help file LTC Sales Contacts button is used to show Linear Technology local sales office contact in-

formation Sync Release button is used to synchronize and update the latest version of the parts data-

base from the internet

3.1 START A NEW DESIGN


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LTpowerCAD Design Tool provides an easy-to-follow and self-explaining guide that leads the userto designing a complete power converter according to their application specifications by following foursteps.

3.1.1 Search and Select a Linear Technology Produc t

When the Start New Design button on the main menu is clicked, a New Design window will showup allowing the user to input the project specification and select qualified Linear Technology Monolith-

ic or uModule part for the first step of the design process.

Search&selectaLinearTechnologyProduct

DesignPowerStageComponents

DesignControlCompensationLoop

FinishandSummary

EnterSupply

Specifications


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User is required to enter Min. Input Voltage, Nom. Input Voltage and Max. Input Voltage,along with up to three Output Rails under the Specification group box in order to use the LTpo-werCAD Design Tool internal search engine to suggest a part. For single output poly-phase de-signs the user can enter the Num. of Parallel Phases to satisfy higher total output current re-

quirements. The user can also select required features under the Feature group box for further qu-alification.

The LTpowerCAD Design Tool will automatically list qualified Linear Technology Monolithic anduModule part names along with detailed specifications in the part list table once user has entered avalid circuit specification or has updated any specification parameters or feature requirements.

Also, the user can click the All Parts button to display all parts supported by the LTpowerCADDesign Tool, bypassing the internal search engine, if the user is familiar with Linear Technology Mo-nolithic and uModule parts and wants to select a qualified part himself.

Note:Please note that the current version of the LTpowerCAD Design Tool only supports a limited num-ber of Linear Technology Monolithic and uModule parts. If there is a specific part you need and it isnot include in the LTpowerCAD Design Tool list, then please click the LTC Web Search button togo to the Linear Technology website to search qualified parts or contact your local Linear Technologysales office.


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Two buttons Start Design and Web Link are located in the first two columns for each part listed inthe part list table. The Start Design button will start a Microsoft Excel based Design Spreadsheetwhich will guide the user thought the whole converter design process including selecting circuit com-ponents, designing and optimizing the control compensation loop. The Web Link button will open

the Linear Technology web page for the selected part in the default web browser.If the Microsoft Excel based Design Spreadsheet is not currently available, the Start Design buttonwill show in gray. If the part is not available on the Linear Technology website, the Web Link buttonwill show in gray. In both cases, please contact your local Linear Technology sales office. Otherwiseclick the Start Design button to start a new design.

After clicking the Start Design button, a Save Design File dialog will pop up allowing the user tosave the design project to a specific folder. The default saving folder is the My Documents folder.

3.1.2 Design Spreadsheet

After saving the design project file, the user will be directed to a Microsoft Excel based DesignSpreadsheet for that specific Linear Technology Monolithic or uModule Part. The Design Spreadsheetwill guide the user thought the whole converter design process including selecting circuit components,designing and optimizing the control compensation loop.

Before the first time using the Design Spreadsheet, the user need to Enable Macros feature in Micro-soft Excel in order to start all the design and optimizing functions build in the Design Spreadsheet.

SavetheDesign


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In Microsoft Excel 2007 Edition, the following Security Warning Message will automatic appear onunder the toolbar. Please click Option button and select Enable this content to Enable Macros.

In Microsoft Excel 2003 and Excel 2000 Edition, the following Security Warning Message will auto-matic appear. Please click Enable Macros to Enable Macros.

SecurityWarning

Enablethiscontent


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Design Spreadsheet includes three worksheets, Main, Summary, and Notes.

Main (or Title and Schematics) worksheet: The page where the user inputs design specificationsin the blue cells and receives design result information in the yellow cells and from graphs.Summary worksheet: Results of the user-input design are shown here in table format.

Notes worksheet: Blank page where user can add notes about the specifics of the design, if de-sired.


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3.1.3 Design Power Stage Components

Part I of the Design Spreadsheet helps the user to design or choose the power stage componentsand evaluate the performance.

The design specifications entered by the user in the search page will be automatically transferred tothis program. According to this design specification, the Design Spreadsheet will suggest optimizedcomponent values such as inductance and resistance for user reference. The user needs to fill in theactual component values or choose them from the component library (please see Appendix for detail).

After the user chooses the actual component, the circuit design key performance parameters, suchas output voltage ripple, will be calculated and displayed for the user to evaluate. Also the user cansimulate the circuit performance by exporting the design to the LTspice

TMsimulation tool by simply

clicking the Export to LTspice button (please see Appendix for details).

The values/descriptions in yellow background cells are calculated / recommended by the LTpower-

CAD design tool. They cannot be modified by users. On the other hand, the values in blue back-

ground cells need to be entered by the user for their specific designs.

In a design spreadsheet, sometimes a cell value appears in RED font. This usually means that there

is a warning. The LTpowerCAD design tool often recommends the typical component values with

lower/upper limits. If the value entered by the user is outside the range of LTpowerCAD design

CircuitSpecification Datasheet

ExporttoLTspiceSimulation


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tools recommendations, the program shows related circuit values in RED as a warning. In this case,

the warning does not cause any malfunction of the design tool. However, the supply designer should

consider whether s/he really wants to keep the current value or follow the value recommended by the

LTpowerCAD design tool.


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3.1.4 Design Compensation Loop

After determining the power stage components, Part II of the design sheet helps users to optimize the

feedback loop design. The user can enter desired loop bandwidth and phase margin and let the pro-

gram suggest the compensation network values. Or, the user can simply adjust the sliding bars for

the compensation component values and check the resulting loop gain Bode Plot and load transient

performance.

ControlLoopBandwidth

PredictedLoadstepResponse


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3.1.5 Wrap-Up and Summary

Once a design is complete, the Summary worksheet shows the key power component values and

a list of a simple Bill-of-Materials (BOM). The Summaryworksheet also helps the user to estimate

the total cost and board footprint of the power train.

The user could also use the Notes worksheet to record any information they want to keep.


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3.2 OPEN EXISTING DESIGN

The user could open and review an existing design file by simply clicking the Open Existing Design

button at the LTpowerCAD Design Tool main menu.

After the user selected an existing design file, the Design Spreadsheet will automatically start for userto review and modify.


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4 UPDATE THE LTPOWERCAD DESI GN TOOL LI BRARYLinear Technology always makes its best effort to provide the customers with the latest and the best

design and analysis tool to significantly ease the customers design process.

By clicking the Sync Release button at the main window, the LTpowerCAD Design Tool could au-tomatically synchronize and download the latest supported Linear Technology Parts Library andComponents Library from Internet. To help keep the design tool library current, the program will re-mind the user to Sync Release if the program has not been updated within the last 45 days.

Note:The users computer needs to have internet connection before using the Sync Release function.Please use the Administration account to run the LTpowerCAD Design Tool before using the

Sync Release function.


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5 APPENDI X5.1 LOAD TRANSIENT PREDICTION

The design tool program provides an approximation of the output voltage overshoot/undershootwaveform during load transients. This approximation is calculated based on the average small-signalmodel of the power supply. Therefore, it does NOT take into consideration possible large-signal non-linear effects that may exist in the real experimental test with a large and very fast load step. In reality,sometimes the overshoot/undershoot is higher than the small-signal estimation. Even so the transientwaveforms give the designer a good starting point to estimate the output voltage over-shoot/undershoot and required minimum output capacitance. To verify the design, it is important andrecommended to actually build the circuit and evaluate its performance.

The output transient waveform is the averaged waveform over a switching cycle. The switching fre-quency ripple is not included in this waveform. The user also needs to include the switching ripple forthe total transient spike.

5.2 LTSPICETMSIMULATION

The LTpowerCAD Design Tool offers users the ability to simulate their designed circuits with theLTspice simulator, which is real-time simulation software that can be downloaded freely at the fol-lowing URL: http://www.linear.com/designtools/software/ltspice.jsp.

In the design spreadsheet, there is an Export to LTspice button, usually located close to the circuitdiagram in Part I. Clicking on this button brings up an Export LTspice file as window, which allowsusers to name and save their designs into an .asc file. An .asc file can be read and simulated bythe LTspice simulator. The design tool automatically transfers all the component values to the .ascfile.

ExporttoLTspiceSimulation


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After saving the LTspice simulation file, the design tool will ask if the LTspice simulator is already

installed. If yes, the design tool opens the LTspice simulator. Then by clicking the RUN button andclicking the node to see the voltage waveform in the LTspice simulator, users can observe the per-formance of their designed circuits in both steady state and transient modes.

5.3 COMPONENT LIBRARY

The component library provides a convenient interface between the design programs and a list ofpopular components. Inside the LTpowerCAD design tool package, there are two standard libra-ries: the capacitor library with file extension .xcap, and the inductor library with file extension .xind.Please do NOT change the file type of these library files.

To access the component libraries during designs, click on a capacitor or inductor symbol that is hig-hlighted in blue; a window will pop up. Selecting the Add this component to the library button al-lows you to copy the parameters of a chosen capacitor or inductor to the corresponding library for


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later use. Selecting the Find a component from the library button allows you to select a compo-nent from a standard library and copy its parameter to the current design spreadsheet.

After selecting either Add this component to the library or Find a component from the library,the program will ask you to select a component library to open. If a correct library file is already open,it will be listed in the white box. In this case, select a library from the list and click on the Go to Li-brary button activates this library. If no component library is open, please click on the Open Li-brary button and an Open Librarywindow will show for you to specify the library file that you wishto open. Please note that only an .xcap file can be specified as a capacitor library, and only a .xindfile can be specified as an inductor library. The default capacitor library is located at\LTpowerCAD\LTClib\Standard.xcap; the default inductor library is located at\LTpowerCAD\LTClib\Standard.xind.

After an appropriate component library file has been opened, if Add this component to the librarywas selected earlier, then the spreadsheet component parameters will be automatically transferred tothe library file. If Find a component from the library was selected, then clicking on any row of thelibrary sheet will enable you to copy it to the design spreadsheet.

The standard.xcapand standard.xindfiles can be duplicated as long as they keep the same file ex-tension. The duplicated files can also interface with a design spreadsheet as described above. In ad-dition, the library files can be opened independently, allowing users to edit or add components freely.


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5.4 PCB LAYOUT EXAMPLE

A reference PCB layout example for each Linear Technology Monolithic and uModule Part in theLTpowerCAD Design Tool is available by clicking the View Layout Example button, which isusually located near the circuit diagram of the Design Spreadsheet. This function can quickly displaya reference PCB layout design as well as important instructions for the corresponding Linear Tech-nology Part for users to read and print.

It is also recommended to view the datasheet regarding the layout considerations. A datasheet link isavailable at the top of each Design Spreadsheet.

5.5 THE ACCURACY OF THE LTPOWERCAD DESIGN TOOL

As always, Linear Technology has made best efforts to support our customers with a quality designtool. However, due to model limitations and external component value variations, it remains the cus-tomers responsibility to verify the program's calculation results by actually building the circuit andevaluating its performance.

Datasheet

PCBLayout

Example


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Linear Technology verifies the loop Bode Plot and load transient for each Linear Technology Mono-lithic and uModule part released in the LTpowerCAD Design Tool with real bench tests on the Li-near Technology Standard Demo Circuit Boards. Threrfore we have a good level of confidence in theaccuracy of our loop designs.

Users are always welcome to contact their local Linear Technology Sales Office for help.

5.6 LTPOWERCAD DESIGN TOOL SUPPORTED LTC PRODUCTS LIST

Supported parts are updated regularly. To view all the latest parts please click Sync Release locatedon the main page of the program. The latest list of supported parts can also be viewed on our websiteat http://ltspice.linear.com/software/LTpowerCADPartList.pdf.

5.7 LINEAR TECHNOLOGY CORPORATION LTPOWERCAD DESIGN TOOL LICENSEAGREEMENT

INSTALLING AND USING THE SOFTWARE ACCOMPANYING THIS LICENSE INDICATES YOURACCEPTANCE OF THESE TERMS AND CONDITIONS UNLESS YOU HAVE A DIFFERENTLICENSE AGREEMENT SIGNED BY LINEAR TECHNOLOGY CORPORATION. READ ALL OF THETERMS AND CONDITIONS OF THIS LICENSE AGREEMENT PRIOR TO INSTALLING OR USINGTHE SOFTWARE. IF YOU DO NOT ACCEPT THESE TERMS, YOU MUST DELETE THESOFTWARE FROM YOUR HARDWARE.

PLEASE NOTE THAT YOU MAY NOT USE, COPY, MODIFY OR TRANSFER THE PROGRAM ORDOCUMENTATION OR ANY COPY, EXCEPT AS EXPRESSLY PROVIDED IN THIS AGREEMENT.

1. LICENSE

THIS SOFTWARE PROGRAM (THE PROGRAM) AND THE ACCOMPANYING ON-LINE READ-ME AND HELP FILES (THE DOCUMENTATION) ARE LICENSED, NOT SOLD, TO YOU BYLINEAR TECHNOLOGY CORPORATION. (LICENSOR). THE TERM PROGRAM SHALL ALSOINCLUDE ANY UPDATES OF THE PROGRAM LICENSED TO YOU BY LICENSOR. SUBJECT TOTHE TERMS OF THIS AGREEMENT, YOU HAVE A NON-EXCLUSIVE AND NONTRANSFERABLERIGHT TO USE THE PROGRAM AND DOCUMENTATION FOR NON-COMMERCIAL (E.G. NOTFOR RESALE OR RENTAL OR THE LIKE), EDUCATIONAL, EVALUATION OR PERSONALPURPOSES ONLY. YOU MAY USE THIS PROGRAM ON A SINGLE COMPUTER LOCATED INTHE UNITED STATES AND ITS TERRITORIES OR ANY OTHER COUNTRY TO WHICH THIS

PROGRAM IS LEGALLY EXPORTED. THIS PROGRAM IS IN USE ON A COMPUTER WHEN ITIS LOADED INTO THE TEMPORARY MEMORY (I.E. RAM) OR INSTALLED INTO THEPERMANENT MEMORY (E.G. HARD DRIVE, CD-ROM OR OTHER STORAGE DEVICE) OF THATCOMPUTER, EXCEPT THAT A COPY INSTALLED ON A NETWORK SERVER FOR THE SOLEPURPOSE OF DISTRIBUTION TO OTHER COMPUTERS IS NOT IN USE. IF YOUPERMANENTLY INSTALL THE PROGRAM ON THE HARD DISK OR OTHER STORAGE DEVICEOF A COMPUTER (OTHER THAN A NETWORK SERVER) AND YOU USE THAT COMPUTERMORE THAN 80% OF THE TIME IT IS IN USE, THEN YOU MAY ALSO USE THE PROGRAM ON APORTABLE OR HOME COMPUTER, OTHERWISE, YOU ARE REQUIRED TO OBTAIN A


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SEPARATE LICENSE TO USE THE PROGRAM ON A PORTABLE OR HOME COMPUTER. YOUAGREE TO USE YOUR BEST EFFORTS TO PREVENT AND PROTECT THE CONTENTS OF THEPROGRAM AND DOCUMENTATION FROM UNAUTHORIZED DISCLOSURE OR USE. LICENSORAND ITS LICENSORS RESERVE ALL RIGHTS NOT EXPRESSLY GRANTED TO YOU.

LICENSORS LICENSORS ARE THE INTENDED THIRD PARTY BENEFICIARIES OF THISAGREEMENT AND HAVE THE EXPRESS RIGHT TO RELY UPON AND DIRECTLY ENFORCETHE TERMS SET FORTH HEREIN.

2. LIMITATION ON USE

YOU MAY NOT RENT, LEASE, SELL OR OTHERWISE TRANSFER OR DISTRIBUTE COPIES OFTHE PROGRAM OR DOCUMENTATION TO OTHERS. YOU MAY NOT MODIFY OR TRANSLATETHE PROGRAM OR THE DOCUMENTATION WITHOUT THE PRIOR WRITTEN CONSENT OFLICENSOR. YOU MAY NOT REVERSE ASSEMBLE, REVERSE COMPILE OR OTHERWISEATTEMPT TO CREATE THE SOURCE CODE FROM THE PROGRAM. YOU MAY NOT USE

LICENSORS NAME OR OTHER TRADEMARKS OR REFER TO LICENSOR OR LICENSORSPRODUCTS DIRECTLY OR INDIRECTLY IN ANY PAPERS, ARTICLES, ADVERTISEMENTS,SALES PRESENTATIONS, NEWS RELEASES OR RELEASES TO ANY THIRD PARTY WITHOUTTHE PRIOR WRITTEN APPROVAL OF LICENSOR FOR EACH SUCH USE. YOU MAY NOTRELEASE THE RESULTS OF ANY PERFORMANCE OR FUNCTIONAL EVALUATION OF THEPROGRAM TO ANY THIRD PARTY WITHOUT PRIOR WRITTEN APPROVAL OF LICENSOR FOREACH SUCH RELEASE.

3. TRANSFER

YOU MAY NOT SUBLICENSE, ASSIGN, DELEGATE, RENT, LEASE, TIME-SHARE OR

OTHERWISE TRANSFER THIS LICENSE OR ANY OF THE RELATED RIGHTS OR OBLIGATIONSFOR ANY REASON. ANY ATTEMPT TO MAKE ANY SUCH SUBLICENSE, ASSIGNMENT,DELEGATION OR OTHER TRANSFER BY YOU SHALL BE VOID. YOU MAY PHYSICALLYTRANSFER THE PROGRAM FROM ONE COMPUTER TO ANOTHER PROVIDED THAT YOU DONOT RETAIN ANY COPIES OF THE PROGRAM, INCLUDING ANY COPIES STORED ON THEFIRST COMPUTER.

4. BACKUP AND COPYRIGHT

THE PROGRAM AND RELATED DOCUMENTATION ARE COPYRIGHTED BY LICENSOR ANDITS LICENSORS. YOU MAY MAKE ONE COPY OF THE PROGRAM FOR BACKUP PURPOSES

IF LICENSORS COPYRIGHT NOTICE IS INCLUDED ON SUCH COPY AND TO LOAD THEPROGRAM INTO THE COMPUTER AS PART OF EXECUTING THE PROGRAM. YOU MAY MAKEONE COPY OF THE DOCUMENTATION AND PRINT ONE COPY OF ANY ON-LINEDOCUMENTATION OR OTHER MATERIALS PROVIDED TO YOU IN ELECTRONIC FORM. ANYAND ALL OTHER COPIES OF THE PROGRAM AND ANY COPY OF THE DOCUMENTATIONMADE BY YOU ARE IN VIOLATION OF THIS LICENSE.

5. OWNERSHIP


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YOU AGREE THAT THE PROGRAM AND DOCUMENTATION BELONG TO LICENSOR AND ITSLICENSORS. YOU AGREE THAT YOU NEITHER OWN NOR HEREBY ACQUIRE ANY CLAIM ORRIGHT OF OWNERSHIP TO THE PROGRAM AND DOCUMENTATION OR TO ANY RELATEDPATENTS, COPYRIGHTS, TRADEMARKS OR OTHER INTELLECTUAL PROPERTY. LICENSOR

AND ITS LICENSORS RETAIN ALL RIGHT, TITLE AND INTEREST IN AND TO THEDOCUMENTATION AND THE PROGRAM AND ALL COPIES THEREOF AT ALL TIMES,REGARDLESS OF THE FORM OR MEDIA IN OR ON WHICH THE ORIGINAL OR OTHER COPIESMAY SUBSEQUENTLY EXIST. THIS LICENSE IS NOT A SALE OF THE ORIGINAL OR ANYSUBSEQUENT COPY. ALL CONTENT ACCESSED THROUGH THE PROGRAM IS THEPROPERTY OF THE APPLICABLE CONTENT OWNER AND MAY BE PROTECTED BYAPPLICABLE COPYRIGHT LAW. THIS LICENSE GIVES YOU NO RIGHTS TO SUCH CONTENT.

6. TERM AND TERMINATION

THIS LICENSE IS EFFECTIVE UNTIL TERMINATED. YOU MAY TERMINATE THIS LICENSE AT

ANY TIME BY DESTROYING THE PROGRAM AND DOCUMENTATION AND THE PERMITTEDBACKUP COPY. THIS LICENSE AUTOMATICALLY TERMINATES IF YOU FAIL TO COMPLY WITHITS TERMS AND CONDITIONS. YOU AGREE THAT, UPON SUCH TERMINATION, YOU WILLEITHER DESTROY (OR PERMANENTLY ERASE) ALL COPIES OF THE PROGRAM ANDDOCUMENTATION, OR RETURN THE ORIGINAL PROGRAM AND DOCUMENTATION TOLICENSOR, TOGETHER WITH ANY OTHER MATERIAL YOU HAVE RECEIVED FROM LICENSORIN CONNECTION WITH THE PROGRAM.

7. DISCLAIMER OF WARRANTY

LICENSOR AND ITS LICENSORS PROVIDE THE PROGRAM AND THE DOCUMENTATION AS

IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS, IMPLIED OR STATUTORY,INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY,FITNESS FOR A PARTICULAR PURPOSE, OR INFRINGEMENT OF THIRD-PARTYINTELLECTUAL PROPERTY RIGHTS. ALL RISK OF QUALITY AND PERFORMANCE OF THEPROGRAM AND THE DOCUMENTATION IS WITH YOU. SHOULD THE PROGRAM PROVEDEFECTIVE, YOU AND NOT LICENSOR ASSUME THE ENTIRE COST OF ANY SERVICE ANDREPAIR. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THISAGREEMENT.

8. LIMITATION OF REMEDIES

IN NO EVENT WILL LICENSOR OR ITS LICENSORS BE LIABLE FOR ANY INDIRECT DAMAGESOR OTHER RELIEF ARISING OUT OF YOUR USE OR INABILITY TO USE THE PROGRAMINCLUDING, BY WAY OF ILLUSTRATION AND NOT LIMITATION, LOST PROFITS, LOSTBUSINESS OR LOST OPPORTUNITY, OR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIALOR EXEMPLARY DAMAGES, INCLUDING LEGAL FEES, ARISING OUT OF SUCH USE ORINABILITY TO USE THE PROGRAM, EVEN IF LICENSOR, ITS LICENSORS OR AN AUTHORIZEDLICENSOR DEALER, DISTRIBUTOR OR SUPPLIER HAS BEEN ADVISED OF THE POSSIBILITYOF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.


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9. APPLICABLE LAW

THIS LICENSE WILL BE GOVERNED BY THE LAWS OF THE STATE OF CALIFORNIA, WITHOUTREFERENCE TO CONFLICTS OF LAWS PRINCIPLES. THE UNITED NATIONS CONVENTION

ON CONTRACTS FOR THE SALE OF GOODS DOES NOT APPLY TO THIS LICENSE.

10. EXPORT CONTROLS

THE PROGRAM AND THE UNDERLYING INFORMATION AND TECHNOLOGY MAY NOT BEDOWNLOADED OR OTHERWISE EXPORTED OR REEXPORTED (I) INTO (OR TO A NATIONALOR RESIDENT OF) CUBA, IRAQ, LIBYA, YUGOSLAVIA, NORTH KOREA, IRAN, SYRIA OR ANYOTHER COUNTRY TO WHICH THE U.S. HAS EMBARGOED GOODS; OR (II) TO ANYONE ONTHE U.S. TREASURY DEPARTMENTS LIST OF SPECIALLY DESIGNATED NATIONALS OR THEU.S. COMMERCE DEPARTMENTS TABLE OF DENY ORDERS. BY DOWNLOADING OR USINGTHE PROGRAM, YOU ARE AGREEING TO THE FOREGOING AND YOU REPRESENT AND

WARRANT THAT YOU ARE NOT LOCATED IN, UNDER THE CONTROL OF, OR A NATIONAL ORRESIDENT OF ANY SUCH COUNTRY OR ON ANY SUCH LIST.

11. U.S. GOVERNMENT END USERS

THE PROGRAM IS A COMMERCIAL ITEM, AS THAT TERM IS DEFINED AT 48 C.F.R. 2.101(OCT. 1995), CONSISTING OF COMMERCIAL COMPUTER SOFTWARE AND COMMERCIALCOMPUTER SOFTWARE DOCUMENTATION, AS SUCH TERMS ARE USED IN 48 C.F.R. 12.212(SEPT. 1995). CONSISTENT WITH 48 C.F.R. 12.212 AND 48 C.F.R. 227.7202-1 THROUGH227.7202-4 (JUNE 1995), ALL U.S. GOVERNMENT END USERS ACQUIRE ONLY THOSE RIGHTSIN THE PROGRAM AND THE DOCUMENTATION THAT ARE PROVIDED BY THIS AGREEMENT.

12. NO OTHER AGREEMENTS

THIS AGREEMENT AND THE INTRODUCTION OF IT ON THE LINEAR TECHNOLOGY WEB SITE,CONSTITUTES THE ENTIRE AGREEMENT BETWEEN THE PARTIES WITH RESPECT TO THEPROGRAM AND THE DOCUMENTATION, AND SUPERSEDES ANY OTHER WRITTEN OR ORALAGREEMENT.

13. SEVERABILITY

IF ANY PROVISION OF THIS AGREEMENT IS HELD INVALID, THE REMAINDER OF THIS

AGREEMENT SHALL CONTINUE IN FULL FORCE AND EFFECT.

IF YOU HAVE ANY QUESTIONS, PLEASE CONTACT IN WRITING: LINEAR TECHNOLOGYCORPORATION AT 1630 MCCARTHY BOULEVARD, MILPITAS, CALIFORNIA 95035-7417.


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5.8 LTPOWERCAD DESIGN TOOL CONTACT INFORMATION

Please contact Linear Technology LTpowerCAD Design Tool development group at LTpower-

[email protected] any question in using this software.

5.9 LTPOWERCAD DESIGN TOOL RELEASE INFORMATION

Version 1.0: Initial release, Sep 2009.Version 1.1: Improved GUI and added update feature to main interface, May 2010.Version 1.2: Added polyphase / parallel phase search feature to main interface, Feb 2011.Version 1.2.2.1: Updated Canada Sales Contacts and updated Sync Release function. Dec 2011.