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Setting Up and Simulating Rigid-Flex Designs in PowerSI from ODB++ Imports

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The most robust and recommended approach is ODB++ > Allegro > PowerSI Workflow.

Steps:

  1. Import the ODB++ file into Allegro.

  1. Verify and configure:
    • Rigid‑Flex zones
    • Stackups for rigid and flex regions

  1. Save the design as an Allegro .brd file.

  2. Import the .brd file into PowerSI for simulation.

This workflow (ODB++ > .brd > .spd) is considered more stable and reliable especially for complex Rigid‑Flex designs.

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