Online Selection Tools - National Semiconductor Webench
Simulate and optimise your designs using a variety of powerful tools.

Farnell InOne is pleased to be teaming up with National Semiconductor to present their award-winning Webench online design tool. Webench is a free interactive online workbench that accelerates designs through selection, electrical simulation, virtual physical layout, and thermal simulation.  Webench also integrates with Farnell InOne and other suppliers online ordering systems to deliver custom prototype kits overnight or fully assembled and tested custom prototypes in five days.  For tight deadlines, an engineer needs only one to two hours using Webench to specify a design, analyse and customize it until it is optimal, and order chips, boards, software, or completed custom prototype boards for delivery to the US overnight.  Worldwide delivery is available in 48 hours.

Designs are saved on the server in secure accounts so they can be reviewed and changed at any time.  Each design features custom presentation quality documentation and any design change or adjustment throughout the process automatically ripples back and updates the documentation.  After optimisation, you can share designs with your peers, management, purchasing, or customers for review, updating, or approval:

• Design, optimise and prototype your power supply products online.
• Automated creation includes passive component selection.
• Integrated environment provides superior optimisation early in the design cycle
• Get your design to market faster than ever before

Get designing now. get online to Webench.

Introduction to Webench - PDF Presentation

This PDF presentation will show you how to design a DC to DC power supply using the Webench on line design environment. Webench can be used to create a power supply design in a few minutes using components which are calculated based on your needs.  In addition, if you have specific optimisation requirements, you can use Webench to tune your design.  This optimisation process involves tradeoffs of different parameters such as loop stability, output voltage ripple, maximum current and transient overshoot/response. This will show you how to quickly explore these tradeoffs to create a design which is optimised for your needs using the Webench Electrical Simulator as well as discuss tradeoffs which can be investigated using the WebTHERM thermal simulator, such as using a heat sink, PC board copper or a fan to dissipate heat and get the temperature within spec.  Lastly, it show you how to rapidly construct a physical prototype of your design using a custom kit which can be received overnight.

Topics

• How to choose the best regulator for your specifications             
• How to use on line SPICE electrical simulation to optimise your design
• Improve the feedback loop stability using the Bode Plot
• Reduce the output voltage ripple
• Reduce overshoot during load transients  
• How to use on line thermal simulation to solve temperature issues
  • Is a heat sink necessary, and if so, what type is best. How much will this cost and how big is it?
  • Can PC board copper be used to lower the temperature?
  • Is a fan required?  
• Use of Webench to get a custom prototype kit overnight

Presentation