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Linear Technology Corporation Copyright.
LTpowerPlanner III System-Level
Design Tool Quick Start Guide
Ver. 3.0.0
January 2016
Design Tool Development Team
Applications Engineering
Power Products, Linear Technology Corp.
LTpowerCAD@linear.com
Last Update: 1/2016
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
LTpowerPlannerTM
Create a “Power Tree” diagram of your Power Management System
Estimate Total System Power, Efficiency and Solution Size
Compare different system architectures for optimum solution
Display and Copy Block Diagram for System Presentation
Save and Load System Design Files for Project Organization
Interface with LTspiceTM Simulation file
Interface with LTpowerCADTM Design Tool file
Available in LTpowerCAD Toolbox, free download at
www.linear.com/ltpowercad
Offline program on PC with Windows 7, 8 or 10.
A System-Level Power Architecture Planning Tool:
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
LTpowerPlannerTM
Located inside the LTpowerCAD “LTC Toolbox”:
Both LTpowerPlanner III and LTpowerPlanner II programs are listed.
The previous LTpowerPlanner II program is NOT recommended for new designs.
LTpowerCAD program is available at www.linear.com/LTpowerCAD
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Intuitive Power System Planning
Create System “Power
Tree” Design / Calculation
Interface With
LTpowerCADTM
Design Tool
Interface With
LTspiceTM
Simulation Tool
Save Design
Print
LTpowerPlannerTM
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
A Simple Design Example
LTpowerPlannerTM
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
LTpowerPlannerTM
Get Started with an Example
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Drawing Area
Main Screen
Toolbar
Tool Strip / Icons
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Components Toolbar
Place input power source
Place Power Converter
(Voltage Regulator)
Place load device
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Components
Input Supply
Load
Device
Line
Linear Regulator
(LDO)
Resistor
Single Output
Converter
Rectangle
Box
Text
Net Name
Connector
Capacitor
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
The Basics Step 1: Add Parts
Click Power, Converter or Load Icon on the tool strip and drop the part onto the drawing
area.
By default, the input power source only has an output terminal. Converters have both input and
output terminals. The load only has input terminals.
The input is always on the left side and the output is always on the right side.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
The Basics Step 2: Make Connections
Add connections. Add a wire connecting Converter 2 to Load 3: First click on the Icon. While in “Draw
Wire” mode, the cursor will become a cross-hair. Click Converter2’s output terminal. Then release the
mouse. Next click on Load3’s input terminal to create the wire. Right-click the Drawing Area to cancel
“Draw Wire” mode.
Notes:
1. Using an external mouse makes it easy to draw wires (instead of laptop PC touch pad/mouse)
2. The current program does NOT support “click-and-drag” to draw connection wire.
3. Routes requiring 90° turns must be placed by the user.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Change part properties. Double click on part labeled “Converter 2” to open the “Properties
Tab”. Update the text box entries appropriate to the desired values.
Double Click
The Basics Step 3: Part Properties
Pressing this arrow
will keep the
“Properties Tab”
always open or
always closed
when a single part
is selected.
Shortcut is “Space”
Note: the values with
blue cell background
color are used for
power calculation or
interface with
LTpowerCAD search.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
The Basics Step 3: Part Properties
Each component has a unique “Properties” box which allows the appropriate fields to be edited.
Power Source Properties Load Device Properties
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Note:
1. The user needs to manually enter the estimated efficiency and size of each converter to
generate estimated total efficiency and board space.
Calculate parameters. Click the Run” icon on the tool strip to calculate system efficiency,
losses and total solution size.
A design project is saved as an .ltp3 file.
The Basics Step 4: Calculate Parameters
Updates Currents, Voltages
and Losses
Creates a “Summary Report”
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Move. Click and drag a part to move it to a new location. Dragging will snap parts in line
with other parts and wire lines.
Design Example Functions & Features(1)
Step 1. Drag
(to select)
Step 2. Click & Hold
(to drag)
Step 3. Drag and Release
(to a new location)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Zoom. Click the “Zoom In” icon on the tool strip menu. This will increment the zoom by one
step. “Zoom Out” is opposite this function. “Zoom to Fit” automatically sizes the zoom.
Design Example Functions & Features(2)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Delete. Click the icon to enter “Delete” Mode. Deleting components will automatically
delete wires that are no longer relevant without the component. Right-click the Drawing Area to exit
“Delete” mode.
Design Example Functions & Features(3)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Delete. Deleting a wire will automatically delete joining wires that are no longer relevant.
Right-click the Drawing Area to exit “Delete” mode.
Design Example Functions & Features(4)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Drag (Group) Delete. Delete groups of parts by dragging the Delete tool
Advanced Functions Drag Delete
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Group Copy/Paste. Duplicates the selected components and their properties.
Design Example Functions & Features(5)
Note: copy/paste connection wires are not supported yet.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Resize Component. Resize parts by dragging the corner of the part when the cursor
changes to the resize icon. Rectangles, lines and text can be resized from multiple corners.
Design Example Functions & Features(6)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Add Converter Output Terminals. Click the “+” button to add an output to the
selected converter.
Design Example Functions & Features(7)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Design Example Functions & Features(8)
Add Output Terminals. Each converter can have up to 8 outputs with separate efficiencies
and output voltages.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Design Example Functions & Features(9)
Add Load Input Terminals. Add an unlimited amount of Terminals to Load Parts by
clicking the “Add New Load Terminal” button.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Design Example Functions & Features(10)
Change Load Visual (Symbol). Change the appearance of Single Load Parts and Input
Parts by clicking the “Change Visual” button.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Input
Visuals Load
Visuals
Stack this visual and
change the color to
create a multiple
input load with
individual labels
Design Example Functions & Features(11)
Change Load Visual. Experiment with different sizes and configurations to achieve the
desired appearance.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
(- Treat the net naming tag as a single input
converter. Does NOT support “drop” onto
an existing net for connection yet. )
Design Example Functions & Features(12)
Net Naming Part. Net naming parts with the same name are connected. This part cannot be
connected by dropping onto existing wires. You have to manually connect wires to it to establish
connections.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Copy an area of the drawing to image. Click the “Camera” icon. Left click and drag the
cursor until the area covers the image you want to copy. This highlighted area of the drawing has
been copied to the clipboard which can now be pasted elsewhere as a picture/image.
Design Example Functions & Features(13)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Add text boxes and highlights. Icons from the Shapes group allow you to add
commenting text and bring attention to specific areas.
Design Example Functions & Features(14)
Shapes Group
Note: the commenting text color, size and
commenting line/rectangular box color and style
can be changed in their properties window.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
New Tab. Click the “Page” icon to create a new
tab. Each tab is included under the same project.
Save will save all tabs into one project file.
Rename Tab. Double click the Tab Name to
rename the tab.
Delete Tab. Right click the Tab Name to bring up
the delete option.
Design Example Functions & Features(15)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Save/Open. “Save” and “Open” apply to ALL TABS! Each tab is designed to be a part of one
solution. This means “Save” saves all your tabs to one file which has multiple tabs. When you
“Open” a file, all your tabs will be replaced by the new project.
Print. Print will Zoom-to-Fit the current tab and open your printing options.
Design Example Functions & Features(16)
Undo/Redo.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Change Background Color. Click the “Color Switch” icon next to the “LTpowerCAD
icon. This will bring up a Color box that will let you change the color of the drawing area
background.
Design Example Functions & Features(17)
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Design Example Functions & Features(18)
Printing. Landscape printing is the default setting and can be changed in printing
preferences.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Link Files. Click “Browse” in a converter’s Property Window to link an existing LTSpice or
LTPowerCAD design file (previously created by user in a PC folder) to a specific converter.
Open Linked Design / Simulation files. Click the LTPowerCAD or
LTSpice button to open the linked files.
Functions Link LTspice/LTpowerCAD Files
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Parametric Search. Clicking the LTpowerCAD button without a linked file will open
LTpowerCAD’s parametric search using parameters pulled from the LTpowerPlanner converter.
Clicking LTspice without a linked file will open a new LTspice window.
Functions Open LTpowerCAD Parametric Search
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Advanced Functions Wire Snapping
Drawing wires will snap to corners for easier and cleaner connections
Snaps left of cursor location
to line up with the corner Must click wire to make
connection, even though it
snaps to the correct place
Easy clean connection
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Advanced Functions Keybindings & Shortcuts
Ctrl + N = New Tab
Ctrl + O = Open File
Ctrl + S = Save File
Ctrl + Shift + S = Save File As
Ctrl + P = Print
Delete = Delete Mode
Ctrl + C = Copy/Paste Mode
W = Wiring Mode
B = Run Calculation
I = Draw Line
A = Draw Arrow
E = Draw Rectangle
T = Text
Space = Open/Close Properties Tab
P = Create Power
S = Create Single Converter
D = Create Dual Converter
R = Create Resistor
O = Create LDO Converter
C = Create Capacitor
L = Create Load
- or Ctrl + Scroll Down = Zoom Out
= or Ctrl + Scroll Up = Zoom In
0 = Zoom Fit
Scroll = Vertical Scroll
Shift + Scroll = Horizontal Scroll
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Backward Compatibility with LTpowerPlanner Rev.2.
Due to the major program structure change, the LTpowerPlanner III can
open the LTpowerPlanner II project files. Only the components are
imported. The wiring connection is not imported.
We will keep the backward compatibility for future LTpowerPlanner III
and beyond program versions.
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
In Development:
Delete Extra Input/Output Terminals
Group Copy/Paste with Wiring
Support Negative Output Voltage
Support Multiple Output LDO
Future Functions In Development
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LTpowerPlanner III Design Tool Quick Start Guide 1/2016
Thank You
Now you have gone through the main features of the
program and are ready to use LTpowerPlannerTM !
There are still more features to explore…
Questions? Suggestions?
Email to: LTpowerCAD@linear.com