Transcript Editing A Power Architect Tree

Editing A Power Architect Tree
What if a user specifies a specific tree configuration?
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The WEBENCH Tool Suite
Power Architect,
FPGA /Processor
and System
Power Architect
WEBENCH Visualizer
WEBENCH Power Designer
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Design This Power Supply In Seconds?
Many Loads, Many Supplies
• Core Supply
[email protected]
• FPGA IO
[email protected]
• Vcca
[email protected]
• Flash
[email protected]
• SDRAM
[email protected]
• CCD
[email protected]
• PLL
[email protected]
• Motor Control
[email protected]
• Miscellaneous
[email protected]
9 Loads and 5 Voltages
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WEBENCH® FPGA Power Architect
Select
Device
From List
Add
FPGA
Configure
Loads
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FPGA Issues
• The output current is a nominal value
– Users should use vendor supplied current calculators to verify the actual
current used for the specific application/utilization
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Enter Additional Loads
Voltage, Current,
and Special
Requirements
Included For:
• Max Voltage Ripple
• Isolated Supplies
• Soft Start
• Post Supply Filters
• LDO Preferred
Add All Of Your Own
Additional System
Loads
Next
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Sequencing Requirements
1) Click to see
sequencing diagram
• Sequencing
requirements of
the selected
FPGA/uP captured
• Modify sequencing
based on system
requirement
• Devices with
Enable pin are
selected to meet
sequencing
requirements
• Rails with same output voltage but
different sequencing requirements are
separated to satisfy sequencing
requirements
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Each Architecture Is Tuned With The
WEBENCH Optimizer, Now For Systems
Optimizer Dial
8000
Relative System Cost
Size
2000
76%
System Efficiency
94%
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WEBENCH FPGA Power Architect
Selects The Best Solutions For Every Rail
Intermediate Rail (12V)
Loads
Supply 2 (1.25V)
Supply 3 (3.3V)
Supply 4 (1.8V)
Supply 5 (2.5V)
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Presenting The User With The Intermediate
Rail Options And Performance Trade-Offs
Intermediate Rail Options Can Be Reviewed & Compared Quickly
12V
3V
5V
No I-Rail
12V
Lowest Cost
12V
23V
5V
Smallest Footprint
Highest Efficiency
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Desired Power Tree
12V
12V, 7.5A
5V, 2.4A
3.3V, .8A
3.3V
2.5V, .13A
LDO
1.9V, 1.9A
1.8V, 1A
1.5V, 1.3A
1.2V, .8A
1V, 1.8A
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Enter loads
Enter all
loads except
for the
unregulated
12V, 7.5A
load.
Only used 1
input source.
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Select Architecture
Architecture
301 has 5V
and 3.3V
intermediate
rails.
This is close
to what is in
the spec.
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Select Alternate Regulator
1) Click to select
a regulator
postion
2) Select
alternate
regulator if
desired
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Edit the block diagram
Click on the Edit
button
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Move Supplies
2) Click on the "Move"
drop down to specify
move to supply 4
1) Click on the
supply that you
want to move
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Move Remaining Supplies
2) Click on the "Move"
drop down to specify
move to supply 4
1) Do the same
for the
remaining
supplies
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Move 1V Supply to Source
2) Click on the "Move"
drop down to specify
move to Source_DC_1
1) Select the 1V
supply
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Save Changes
Click Save
Changes button
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Compare to Other Architectures
Click Compare
button
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Compare to Other Architectures
New architecture is
higher efficiency,
but higher cost and
larger footprint.
Old
New
83.4% 86.8%
$13.21 $16.11
1223
1301mm2
Original
New
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Create Project
Click Create
Project button
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WEBENCH Project
Project designs
have now been
created and can
be manipulated
in WEBENCH
Designer.
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