WEBENCH® Power Architect

Quick Expert Design of Multi-Tier, Multi-Rail Power Supplies

WEBENCH Power Architect lets engineers quickly design and simulate a complete power supply system for any number of supplies and outputs. System designers can optimize the entire power supply system for small footprint, high efficiency, and cost in minutes.

TI's new integrated SIMPLE SWITCHER® power modules, in additional to existing voltage regulators controllers, are also supported in WEBENCH Power Architect for low part count and small footprint with industry-leading thermal performance and low electromagnetic interference (EMI).

  • Quickly design and simulate your entire power supply system
  • Easily configure the power supply load requirements for voltage and current
  • Optimize the overall footprint, efficiency, and BOM cost for the entire system
  • Get the schematic and BOM for the complete power supply system
  • Perform electrical simulation and thermal simulation
  • Create a PDF documenting the power system including schematics, BOMs, and electrical operating values
  • For more info, check out the guided tour video and step-by-step instructions

MOSFET Selection For Switching Power Supply Systems
Read how WEBENCH simplifies MOSFET selection and helps users visualize the tradeoffs between different design approaches.


WEBENCH® Designer

Power Architect Help:

Guided Video Tour (17 mins)

  • Quick start guide to using WEBENCH Power Architect
  • Overview of features and capability
  • Design example

Step by Step:

1. How Can You Design This Complex Power Supply In Seconds?

Lets go over a real example. TI has a development platform for FPGA-based motor control including industrial communication interfaces and current drive management. The core design includes FPGAs, processors, Flash and DDR memories, communications and JTAG test interfaces, and motor driver and user interface connectors. Add to that the power supplies and you have a very complex board. This supply was designed by Avnet, Altera, and TI engineers using classic design methods. WEBENCH Power Designer was used to create some of the individual supplies but the work to create the entire power architecture took significant time and development. The power designers would probably disagree with me but I am fairly certain that the power supplies here are not the highest possible efficiency, lowest cost, and smallest footprint possible for this design. The reason is time, knowledge, and tools. It just was not possible to look at all of the potential options and select the most effective in all the cases. This is what WEBENCH Power Architect now makes possible, fast, and easy.



2. Configure The WEBENCH Power Architect

The complex power supply requirements for the Motion Fire reference design requires 9 loads and 5 separate voltage rails from the main voltage source. Just enter these values into the initial screen of the Power Architect and press Submit Your Project Requirements.



3. Compare 25 Different Solutions in Seconds

This is the first response you see with 5 different architectural solutions to your power supply design. The first solutions are with the Optimizer Dial set at level 3 for a balanced design solution with a focus on ease of design, and a balance between small footprint and high efficiency. For each subsequent click on the Dial settings you can continue to add 5 additional architectures per dial setting. The performance of each of these supplies will be presented to you in a visual table graph including Footprint, Efficiency, and total component BOM cost at the 1K budgetary level. The selected architecture will be displayed in the lower right corner.



4. Filter & Select Your Architecture

Every component in every power supply is chosen with the guidance of the Optimizer Dial setting. The value descriptions of the best design at each Optimizer Dial setting is shown in the boxes beneath the Dial. The designs can be filtered using the bar filters in the middle of the screen. Once you have selected the power supply architecture you prefer, Click on View Project Details.



5. Different Rail Configurations Impact Design

For each setting of the Optimizer Dial, the WEBENCH Power Architect implements 5 different intermediate rails between the source and the loads. Next, Power Architect makes multiple calls for the downstream individual supplies for the downstream loads and optimizes the selection of components for every supply. Here is an example of some of the options which are given by Power Architect.



6. WEBENCH Power Architect Offers Many Complete Solutions For Complex Systems

Dozens of options can be exercised for each Dial setting. From those options the user can quickly influence their design to many alternatives very quickly. The lowest cost system has lowest efficiency and larger footprint. The Smallest footprint option has low efficiency and medium cost, and the highest efficiency design also has high cost and a large footprint. Other scenarios fall in between. Using Power Architect, the user can quickly choose the best system architecture by comparing the results graphically.



7. Optimizing The Projects

The Optimizer Dial guides the selection of every power supply component.



8. The Optimizer Dial: Adjust the Weighted Selections in All Calculations

Optimizer Dial setting 3 is the default setting. The first 5 designs are selected with balance in mind. At this setting, we try to select an easy to use SIMPLE SWITCHER regulator with high weighting for footprint, efficiency, and lost cost.



9. Using WEBENCH Power Architect: Select An Architecture

You can view each architecture by hovering over or clicking on each on of the total BOM cost balls in the graph or the rows in the parametric table. To move forward and view the project details click on the green button.



10. Using WEBENCH Power Architect: Focus On The Individual Supplies

As you move forward to look at the project details for the selected architecture, you will see the following display. Clicking on each supply will show you more details for each of the selected supplies.



11. Using WEBENCH Power Architect: Click Create Project Designs To View BOM

The largest pie section will quickly show you which of the individual supplies contributes the most to your target feature. That is a good place to continue your tuning. You will need to either have a personal workspace and Sign-On account on the TI site at this point or you will have to create one in order to continue to see your project details.



12. Use WEBENCH Power Designer To Further Examine & Optimize Your Design

Once the project is created and saved, it is opened in the WEBENCH Designer environment. The system block diagram appears on the left. Each power supply design can be accessed by clicking on the appropriate block. Then the user can exercise all the WEBENCH Designer features including viewing and changing the BOM, viewing charts of critical operating values such as efficiency vs load current, conducting electrical simulation, conducting thermal simulation (if available) and getting a prototype kit using the WEBENCH Build It feature (if available). You can use the Optimizer Dial at this level to tune a specific design further. The system could be designed in Power Architect with a balanced Dial setting 3 but at this level, one of the designs could be tuned to highest efficiency Dial setting 5 to meet design requirements.



13. Easy Controls For Project & Design Navigation

WEBENCH Power Architect and WEBENCH Toolset have persistent universal navigation at the top to make it easy to move between the overall power supply system architecture in Power Architect and design and optimization of each supply in Power Designer.



Renaming a Power Architect Project





Modifying A Group in Power Architect


Load group


Assinging a load to a group




Load groups


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