Sigrity OptimizerPI

Using Sigrity OptimizerPI decoupling capacitors can be optimized on circuit boards. The software analizes with a 3D field solver the current and tension supply system of the board. Afterward all combinations will be calculated from an existing list that shows prices and electrical properties. Thereby the already placed foooprints for condensators are considered in the design. As results will only be showed those combinations, which have better electrical properties or which are cheaper in sum of the component costs. Sigrity OptimizerPI can be used in the design phase as well as on finished routed designs. The saving potential is in the range of 15% to 50% of the costs for capacitors, with the same or better electrical properties.

Sigrity OptimizerPI


  • Automatically selects and places decoupling capacitors
  • Eliminates decap over-design for PCBs and IC packages
  • Reduces PDS cost for new designs and post-production products
  • Develops effective decap guidelines for packaged components
  • Recaptures design area by eliminating unnecessary decaps
  • Assesses PDS cost vs. performance tradeoffs interactively
  • Optimizes a PDS across the board/package interface
  • Creates lowest cost/best performance decap placement tables
  • Identifies both the number and locations for EMI decaps


  • Quantifiable decap cost savings without PDS performance risk
  • Uniquely flexible and fully automated environment for analyzing cost vs. performance
  • Robust and proven underlying hybrid EM/circuit analysis technology
  • Intuitive and interactive visualization of PDS performance
  • Simple to set up for pre- and post-layout decap optimization
  • Unique device impedance and EMI resonance checking
  • Ability to support large designs that include both package and board data
  • Optimized for flows with Cadence SiP Layout, Allegro Package Designer, and Allegro PCB Designer
  • Readily used in Mentor Graphics, Zuken, and Altium flows, accepting a mix of CAD databases where needed for multi-structure design support 


Overview of the Allegro Sigrity Products:

Allegro Sigrity



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