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Designing PCBs for Signal and Power Integrity in Allegro X

Manage SI/PI across PCB design with Allegro X. This guide covers stackup, constraints, analysis, and signoff to reduce rework and speed delivery of high-performance, manufacturing-ready boards.

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Signal and power integrity have become critical design considerations when designing PCBs as data rates, densities, and performance requirements continue to increase. This design guide walks through a practical Allegro X workflow for managing SI and PI throughout PCB development, from stackup planning and constraint definition to analysis and signoff. By incorporating SI and PI verification throughout the design process rather than waiting until the end, teams can minimize costly rework and accelerate the path to manufacturing-ready designs.

About the Author

Kirsch Mackey is an electrical engineer, educator, and content creator with over 15 years of experience spanning power systems, control systems, electrical systems, embedded programming, PCB design, power electronics, and high-speed digital systems. As founder of HaSofu and former adjunct professor, he developed the MESH method—a structured approach to high-speed PCB design that has helped students land roles at companies like Apple, Intel, Cisco, Garmin and Amazon in months rather than years. Drawing from industry experience at Intel and beyond, Kirsch bridges theory and practice through technical writing, courses, and hands-on workshops that make complex engineering concepts accessible and actionable.

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