Common PD Issues
Recognize the patterns and fix them earlier.
Frequent Problem Areas
Timing failures due to long interconnects or poor placement.
Routing congestion around macros or narrow channels.
Power integrity issues like IR drop and electromigration.
DRC violations from spacing, density, or via constraints.
Typical Fixes
Improve floorplan and add whitespace near dense regions.
Buffer long nets and re-balance critical paths.
Strengthen the PDN and add decap cells where needed.
Run incremental DRC and fix violations early.
Prevention
Set realistic constraints and validate them early.
Use congestion and IR analysis during floorplan and placement.
Keep signoff checks in the loop throughout implementation.