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Ltpowercadtm II Introduction & Quick Start Guide

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Ltpowercadtm II Introduction & Quick Start Guide LTpowerCADTM II Introduction & Quick Start Guide Rev. 2.0 07/2013 Design Tool Development Team Power Products, Linear Technology Corp. [email protected] Copyright © 2013 Linear Technology. All rights reserved What is LTpowerCAD Design Tool 2 A Compp,plete, Step-by-Steppppyg Power Supply Design Tool: Step-by-Step Power Supply Design: TM Enter specs, Power Supply Efficiency & Looppy Stability LTspice Power Loss search solution. Schematic. & Transient Simulation LTpowerCAD TM LTCLTpowerCAD ConfidentialDesign Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved How is LTpowerCAD Different from LTspice: 3 LTspi ce: AfliitA powerful circuit siltitlimulation tool with in tegra te d mo de ls o f mos t Linear Technology products. LTpowerCAD Design Tool : • A power supply design tool instead of simulation tool. • Searches for a solution / LTC part for given power supply spec. • Guides users to select power stage components. • Provides detailed power efficiency / loss analysis. • Provide quick loop bode plot stability and load transient analysis. • Only supports selected power products (mostly buck & modules). •Desiggpn file can be exported into LTspice simulation circuit. TM LTCLTpowerCAD ConfidentialDesign Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved How to get your free LTpowerCAD II 4 •Go to http://www.linear.com/LTpowerCAD • Download & install LTpowerCAD II on your Windows PC. • See later pages for installation instruction. TM LTCLTpowerCAD ConfidentialDesign Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved LTpowerCAD II 2.0 Supported Parts 5 Buck Converters : Note: This list was generated on 07/25/2013. New parts could be added to the library after that. Click “Sync-Release” to update LTpowerCAD library & functions. TM LTpowerCADLTpowerCAD II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. LTpowerCAD II 2.0 Supported Parts 6 Boost Converters : Buck-Boost Converters : Note: This list was generated on 06/06/2013. New parts could be added to the library after that. Click “Sync-Release” to update LTppyowerCAD library & functions. TM LTpowerCADLTpowerCAD II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. I. Installation 7 LTpowerCAD II Software Installation TM LTCLTpowerCAD ConfidentialDesign Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved Minimum Requirements 8 The following system and software is required for LTpowerCAD II v2.0 TM 9 PC with Microsoft Windows XP SP2 or later OS 9 Microsoft Office Excel 2000, 2003, 2007, 2010 or 2013 9 Microsoft .NET Framework 3.5 SP1, 4.0 or Higher http://www.microsoft.com/net/download 9 Microsoft SQL Server Compact 3.5 Service Pack 2 http://www.microsoft.com/en-us/download/details.aspx?id=5783 * Note : The LTpowerCAD installer is made to automatically download and install these the Microsoft .NET and SQL Server to your system if your system does not already have these installed. However, if for some reason they are not installed automatically, you need to install them manually from Microsoft download sites. **Note: •Windows Vista or Windows 7, Windows 8 based PC has .NET Framework integrated. •Some Windows XP based PC may need additional installation of the .NET Framework, which can be freely downloaded at www.microsoft.com. •Manyypyy new computers may already have SQL Server Comp act 3.5SP2 installed (check to make sure ) TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. Minimum Requirements (cont’d) 9 Optional: check if .NET and SQL Server are installed: Microsoft .NET 3.5, 4 or higher is required Required for accessing part information TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. Installing LTpowerCAD II v2.0TM 10 1. Double Click “Setup.exe” to Start LTpowerCAD II v2.0TM Desiggpn Tool Setup Wizard Note : Do not install by double clicking the “MS.msi” file as this will prevent the installer from checking to install and installing any missing Microsoft requirements. 2. Click “Next” 3. Select Installation Folder and Click “Next” 4. Click “Next” to Confirm Installation and then “Close” to complete the Installation Click “Next” Select Folder Click “Next” Click “Close” Click “Next” 5. Check the contents of the installation folder (see next slide) Note : The installation will place shortcuts to the LTpowerCAD II v2.0 TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. II. User Interface 11 Getting Start with LTpowerCAD II TM LTCLTpowerCAD ConfidentialDesign Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved Main Page 12 Search for a part based on supply spec. and requirements Open an existing LTpowerCAD II design file Open an existing Excel-Based design file View h el p fil e View LTC Sales Office contacts Open LTC Toolbox Update LTpowerCAD II program & program library TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. Search Page 13 Step 2. Click “Search” Step 1. Enter power after the supply specs supply spec. and are entered to find required functions. parts. If you know the LT part# to use, you can enter the 4-digit part# and click “go” instead of search. Step 3. Select a Part from Search Results Table: Click LTC icon for LTpowerCAD II tool Click Excel icon for Excel-Based tool Note: if the icon is in grey color, it means the design tool is not available. TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. Available Design Tool Formats 14 Two possible design tool formats: 1. Non-Excel LTpowerCAD Design Tool: If available, an active LTC button is shown: 2. Excel-Based Design Tool: If available, an active Excel button is shown: Note: if the icon is in grey color, it means the design tool is not availa ble ye t. TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. Step-By-Step Supply Design Procedure 15 using the LTpowerCADTM Design Tool Main Enter Supply Spec. program Search/select a part Automatic spec transfer Open the design tool IdiidlIndividual Libraries Design Tool Component Power stage design libraries Control looppp optimization Check load step (if nee de d) LTspice™ simulator Export to and run View layout LTsp ice ™ s imu la tion example file (OPT) LTpowerCADTM Design Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved 15 16 Example of a non-Excel LTpowerCAD design Tool TM LTCLTpowerCAD ConfidentialDesign Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved Design Step 1 – Power Stage Design 17 Yellow Cells = Suggested values or calculated parameters Blue Ce lls = User ’s c hosen va lues Design Requirements & Part Limits Red Cells = Warning - parameter outside of recommended range. Select different current sensing schemes •User can only change blue-cell values and check calculated circuit parameters in yellow and red cells. • Red cells are for warnings. User needs to decide if following/correcting the warning or not. LTpowerCADTM Design Tool Quick Start Guide Copyright © 2010 Linear Technology. All rights reserved LTCLTpowerCAD Confidential II v2.0TM Design Tool Quick Start Guide Copyright © 2013 Linear Technology. All rights reserved. Design Step 2– Select L and FET, Optimize Eff % & Power Loss 18 View data for each rail Enter power stage component details & Test Conditions (enter manually or select from built-in library) Click “Update Plots” after component value changes. Estimated Efficiency & Power Loss Curves Estimated Power Loss Breakdown with Data Point Cursors. Double-click to set axes Preferences TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. Power Component Library - FET 19 Click “Select” to open MOSFET library. Standard library User created library User can add new part into user library Popular vendor weblinks TM LTCLTpowerCADLTpowerCAD Confidential II v2.0DesignTM Design Tool Quick Tool Quick Start GuideStart Guide Copyright Copyright © 2010© 2013 Linear Linear Technology. Technology. All Allrights rights reserved reserved. Power Component Library - Inductor 20 Click “Select” to open inductor library. Standard library User created library User can add new part into user library Popular vendor weblink / web-search site. TM LTCLTpowerCADLTpowerCAD Confidential II
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