Siemens To Buy Design Automation Company Excellicon

By Amit Chowdhry ● May 25, 2025

Siemens Digital Industries Software announced that it has agreed to buy Excellicon. This will add Excellicon’s software for developing, verifying, and managing timing constraints to Siemens’ EDA software portfolio for IC design.

The planned acquisition enables Siemens to deliver a new approach to implementation and verification flows, enabling system-on-a-chip (SoC) designers to improve power, performance, and area (PPA), accelerate design closure, enhance functional and structural constraint correctness, improve productivity, and address key gaps in the current workflows.

The SoC design landscape is also rapidly evolving, partly driven by growing design complexity. And timing constraints management is required throughout the design process to meet power, performance, area, and time-to-market requirements.

The addition of Excellicon’s proven product portfolio covers the whole spectrum of timing constraints authoring, compiling, verification, formal validation, and management using a multi-mode approach that bridges early design concepts with physical implementation, providing insights into partitioning schemes for optimal floorplans and timing. Integrating Excellicon’s timing constraint verification and management technology into Siemens will strengthen implementation and verification flows.

Launched in 2009 in Laguna Hills, USA, Excellicon develops tools for timing constraints used in digital design and verification workflows. The terms of the acquisition, which is expected to close in a few weeks, were not disclosed.

KEY QUOTES:

“Effective timing constraints management is crucial for the overall success of semiconductor system-on-chip designs. Excellicon’s constraint verification and management solution complements Siemens’ existing EDA offerings and expands our portfolio into key market segments in flows with the Questa, Tessent, Aprisa, and PowerPro products.”

Mike Ellow, CEO, Siemens EDA, Siemens Digital Industries Software

“We are delighted to join Siemens and bring our knowledge and expertise in timing constraints management to the wider Siemens EDA community. Together, we’ll be able to provide better process coverage and enable our customers to deliver robust innovation to market more quickly and overcome the ever-growing complexity challenges facing the IC industry.”

Himanshu Bhatnagar, CEO, Excellicon

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