Power Network Design Optimizing Metal Layer Utilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In power networks with multiple metal layers, the ability of the second metal layer to supply power is often lower than the bottom metal layer due to narrower power traces, leading to inefficient power distribution.
Innovation Solution
A method for designing a power network that adjusts the distance between power traces on each metal layer to ensure equal utilization rates, with the first metal layer having a higher utilization rate than the second, and the second having a higher rate than the third, by configuring the second metal layer as either a single-via straight-through or multi-pipe dredging layer based on routing resource sufficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the width of power traces in the second metal layer is reduced, then the routing density increases, but the power supply ability decreases
Solution Approach 1:
The patent adjusts the distance between power traces on each metal layer to optimize the utilization rate of routing tracks. By changing the spatial parameter (distance between traces) rather than the width parameter, the patent achieves high routing density while maintaining adequate power supply capability through balanced utilization rates across layers.
2Productivity
If the distance between power traces is reduced, then the utilization rate increases, but the voltage drop increases
Solution Approach 1:
The patent optimizes the distance between power traces to achieve a balanced utilization rate across metal layers. By carefully controlling this spatial parameter, the patent maximizes routing utilization while maintaining voltage drop within acceptable limits through the balanced power distribution network.
Data Source
AI summary
A method for designing a power network is provided and includes: initializing via widths and power-trace widths; determining whether utilization rates of first, second and third routing tracks are respectively equal to first, second and third values; when said utilization rate of said first routing tracks is not equal to said first value, adjusting said distance between first and second power traces until said utilization rate thereof is equal to said first value; when said utilization rate of said second routing tracks is not equal to said second value, adjusting said distance between third and fourth power traces until said utilization rate thereof is equal to said second value; and when said utilization rate of said third routing tracks is not equal to said third value, adjusting said distance between fifth and sixth power traces until said utilization rate thereof is equal to said third value.