Power Distribution System with Segmented Lines to Reduce IR Drop
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Solution Overview
Problem
Conventional power lines in electronic systems experience significant IR drop effects, particularly at the ends, leading to malfunctioning circuits due to increased electronic components and decreasing operating voltages.
Innovation Solution
A power distribution system comprising two spaced power lines with a conductive connecting line, where power is supplied at opposite ends, and the power lines may have varying widths or be laid out on different planes to reduce IR drop by averaging the voltage drop across the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional single power line is used, then the structure is simple, but the IR drop effect is significant particularly at the ends
Solution Approach 1:
The single power line is segmented into two separate power lines (first power line and second power line) that are spaced apart and connected by conductive connecting lines. This segmentation divides the current path into multiple parallel routes, reducing the current density and IR drop in each individual line while maintaining overall power distribution functionality.
Solution Approach 2:
The power distribution system transitions from a one-dimensional single line structure to a two-dimensional arrangement with two spaced power lines connected by横向 connecting lines. This dimensional change creates multiple current paths and reduces the IR drop effect by distributing current across a larger spatial footprint.
2Device complexity
If power is supplied only at one end of the power line, then the power supply structure is simple, but the IR drop at distant nodes is excessive
Solution Approach 1:
The single power supply point is segmented into multiple power supply nodes distributed along the power lines. By supplying power at both ends of the power distribution system, the current path length is reduced and voltage drop is minimized at distant nodes, while the segmented structure allows flexible placement of power supplies.
3Ease of manufacture
If the power line width is uniform throughout, then the manufacturing is simple, but the IR drop cannot be optimized for different segments
Solution Approach 1:
The power lines are designed with non-uniform width where the first and second power lines have greater width at their respective power-supplied nodes compared to intermediate nodes. This local quality variation reduces IR drop at the power supply entries where current is highest, while maintaining simpler geometry at intermediate sections, optimizing the balance between manufacturing ease and electrical performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed system substantially reduces or eliminates the IR drop effect by averaging the voltage drop across the power lines, improving the operation of electronic components.
Implementation Method 1
At least one conductive connecting line electrically couples the first power line at one end and the second power line at another end
Implementation Method 2
the IR drop at or near either end (A or B) has a greater rate of change than the middle node (M) as a consequence of the supplied current at either end (A or B) being greater than that at the middle node M
Data Source
AI summary
A power distribution system is disclosed. The system includes a first power line and a second power line laid out on a substrate. The first power line is spaced apart from the second power line. The system also includes at least one conductive connecting line that electrically couples the first power line at one end and the second power line at another end. A power supply supplies power to the first power line and the second power line. A supply node on the conductive connecting line is then used to provide the supplied power.