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Editing A Power Architect Tree What if a user specifies a specific tree configuration? 1 The WEBENCH Tool Suite Power Architect, FPGA /Processor and System Power Architect WEBENCH Visualizer WEBENCH Power Designer 2 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 3 WEBENCH® FPGA Power Architect Select Device From List Add FPGA Configure Loads 4 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 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 6 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 7 Each Architecture Is Tuned With The WEBENCH Optimizer, Now For Systems Optimizer Dial 8000 Relative System Cost Size 2000 76% System Efficiency 94% 8 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) 9 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 10 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 11 Enter loads Enter all loads except for the unregulated 12V, 7.5A load. Only used 1 input source. 12 Select Architecture Architecture 301 has 5V and 3.3V intermediate rails. This is close to what is in the spec. 13 Select Alternate Regulator 1) Click to select a regulator postion 2) Select alternate regulator if desired 14 Edit the block diagram Click on the Edit button 15 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 16 Move Remaining Supplies 2) Click on the "Move" drop down to specify move to supply 4 1) Do the same for the remaining supplies 17 Move 1V Supply to Source 2) Click on the "Move" drop down to specify move to Source_DC_1 1) Select the 1V supply 18 Save Changes Click Save Changes button 19 Compare to Other Architectures Click Compare button 20 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 21 Create Project Click Create Project button 22 WEBENCH Project Project designs have now been created and can be manipulated in WEBENCH Designer. 23