DC Voltage Regulator Power Stages for IC Current Distribution
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Solution Overview
Problem
Integrated circuits face inefficiencies in power distribution due to equal current supply from multiple power stages, leading to significant power losses, as existing systems do not dynamically adjust current based on the activity level of functions and their physical locations on the circuit.
Innovation Solution
A method that dynamically adjusts the current supplied by each power stage of a DC voltage regulator based on the activity level of functions located at different physical locations on the integrated circuit, minimizing power losses by prioritizing current delivery through shorter, more efficient conduction paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If equal current is supplied from multiple power stages to all functions, then power distribution is simplified and uniform, but power losses increase due to longer conduction paths from distant power stages
Solution Approach 1:
The patent applies local quality by enabling different power stages to supply different amounts of current based on their proximity to active functions. Power stages located closer to active functions supply more current, while those farther away supply less or no current. This spatially differentiated current distribution reduces conduction path lengths and minimizes power losses (I²R losses) in the power delivery network.
Solution Approach 2:
The system dynamically adjusts the current contribution from each power stage based on real-time activity levels of functions. When function activity changes, the controller redistributes current among power stages to optimize power delivery. This dynamic adaptation allows the system to respond to varying load conditions and minimize power losses under different operating scenarios.
2Length of stationary object
If power stages are distributed around the perimeter of the integrated circuit, then conduction path lengths to various functions are reduced, but the complexity of controlling current distribution from multiple locations increases
Solution Approach 1:
The power distribution system is segmented into multiple independent power stages positioned at different locations around the perimeter of the integrated circuit. Each power stage operates semi-independently, allowing localized power delivery to nearby functions. This segmentation reduces the average conduction path length from power stages to functions, minimizing resistive losses in the power network.
Solution Approach 2:
The controller receives feedback information about function activity levels and uses this feedback to adjust the current output of each power stage. This closed-loop control enables the system to optimize power distribution in real-time, balancing the reduced conduction path length benefits with the increased control complexity by using intelligent, adaptive current allocation based on actual load conditions.
Data Source
AI summary
A computer program product includes a computer readable storage medium having program instructions embodied therewith, wherein the program instructions are executable by a processor to cause the processor to perform a method. The method comprises obtaining an activity level for each of a plurality of functions of an integrated circuit, wherein each function has a different physical location on the integrated circuit. The method further includes dynamically adjusting an amount of current supplied to the integrated circuit by each of a plurality of power stages of a DC voltage regulator to meet the current requirements of the plurality of functions and to control power losses between the power stages and the functions, wherein each power stage has a different physical location along a perimeter of the integrated circuit.