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WEBENCH Power Designer
WEBENCH Visualizer
The WEBENCH Tool Suite
Power Architect, FPGA
/Processor and System Power
Architect
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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
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
5
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Enter Additional Loads
6
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
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• 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
1) Click to see sequencing diagram
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Each Architecture Is Tuned With The WEBENCH Optimizer, Now For Systems
Optimizer Dial
System Efficiency 94%76%
Size
8000
2000
Relative System Cost
WEBENCH FPGA Power Architect Selects The Best Solutions For Every Rail
Intermediate Rail (12V) Supply 2 (1.25V)
Supply 4 (1.8V)
Supply 3 (3.3V)
Supply 5 (2.5V)Lo
ads
9
101010
Presenting The User With The Intermediate Rail Options And Performance Trade-Offs
Intermediate Rail Options Can Be Reviewed & Compared Quickly
23V
3V
No I-Rail
12V
5V
12V
Smallest FootprintHighest Efficiency
Lowest Cost
12V
5V
Desired Power Tree
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12V12V, 7.5A
5V, 2.4A
3.3V, .8A
2.5V, .13ALDO
1.9V, 1.9A
1.8V, 1A
1.5V, 1.3A
1.2V, .8A
1V, 1.8A
3.3V
Select Architecture
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Architecture 301 has 5V and 3.3V intermediate rails.This is close to what is in the spec.
Select Alternate Regulator
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2) Select alternate regulator if desired
1) Click to select a regulator postion
Move Supplies
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1) Click on the supply that you want to move
2) Click on the "Move" drop down to specify move to supply 4
Move Remaining Supplies
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1) Do the same for the remaining supplies
2) Click on the "Move" drop down to specify move to supply 4
Move 1V Supply to Source
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1) Select the 1V supply
2) Click on the "Move" drop down to specify move to Source_DC_1
Compare to Other Architectures
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New architecture is higher efficiency, but higher cost and larger footprint.Old New83.4% 86.8%$13.21 $16.111223 1301mm2
Original New