1. 1 Editing A Power Architect Tree What if a user specifies a specific tree configuration?

2. 222 WEBENCH Power Designer WEBENCH Visualizer The WEBENCH Tool Suite Power Architect, FPGA /Processor and System Power Architect

3. 333 Design This Power Supply In Seconds? Many Loads, Many Supplies Core Supply 1.25V@3.0A FPGA IO 3.3V@0.5A Vcca3.3V@0.2A Flash3.3V@2.0A SDRAM1.8V@1.0A CCD 2.5V@0.2A PLL1.25@0.2A Motor Control12V@2.0A Miscellaneous3.3V@2.0A 9 Loads and 5 Voltages

4. WEBENCH® FPGA Power Architect Add FPGA Select Device From List Configure Loads 4

5. 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

6. 66 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

7. 77 Sequencing Requirements 7 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

8. 888 Each Architecture Is Tuned With The WEBENCH Optimizer, Now For Systems Optimizer Dial System Efficiency 94%76% Size 8000 2000 Relative System Cost

9. 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) Loads 9

10. 10 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 Footprint Highest Efficiency Lowest Cost 12V 5V

11. Desired Power Tree 11 12V 12V, 7.5A 5V, 2.4A 3.3V,.8A 2.5V,.13A LDO 1.9V, 1.9A 1.8V, 1A 1.5V, 1.3A 1.2V,.8A 1V, 1.8A 3.3V

12. Enter loads 12 Enter all loads except for the unregulated 12V, 7.5A load. Only used 1 input source.

13. Select Architecture 13 Architecture 301 has 5V and 3.3V intermediate rails. This is close to what is in the spec.

14. Select Alternate Regulator 14 2) Select alternate regulator if desired 1) Click to select a regulator postion

15. Edit the block diagram 15 Click on the Edit button

16. Move Supplies 16 1) Click on the supply that you want to move 2) Click on the "Move" drop down to specify move to supply 4

17. Move Remaining Supplies 17 1) Do the same for the remaining supplies 2) Click on the "Move" drop down to specify move to supply 4

18. Move 1V Supply to Source 18 1) Select the 1V supply 2) Click on the "Move" drop down to specify move to Source_DC_1

19. Save Changes 19 Click Save Changes button

20. Compare to Other Architectures 20 Click Compare button

21. Compare to Other Architectures 21 New architecture is higher efficiency, but higher cost and larger footprint. OldNew 83.4%86.8% $13.21$16.11 12231301mm 2 Original New

22. Create Project 22 Click Create Project button

23. WEBENCH Project 23 Project designs have now been created and can be manipulated in WEBENCH Designer.