Voltage Regulator Current Reporting for Processor Performance
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Solution Overview
Problem
Processors in electronic devices face inefficiencies in power management due to constant voltage regulation limitations, which can lead to underutilization of processor performance even when silicon temperatures are below thresholds, as they self-limit power dissipation based on published specifications rather than actual capabilities of the voltage regulator circuit.
Innovation Solution
A voltage regulator circuit that measures and reports electrical current drawn to the processor differently than actually consumed, allowing the processor to request increased voltage and frequency below threshold temperatures, thereby enhancing performance by utilizing the regulator's capabilities beyond published maximum power dissipation limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the processor limits requested supply voltage based on published maximum power dissipation limits, then the voltage regulator circuit operates within safe limits, but the processor performance is reduced due to underutilization when silicon temperatures are below thresholds
Solution Approach 1:
The system implements a feedback mechanism where the voltage regulator circuit monitors its actual electrical current draw and communicates this information to the processor. The processor uses this feedback to dynamically adjust its power dissipation requests, allowing it to operate above published limits when the voltage regulator has available capacity, while maintaining safety margins. This resolves the contradiction by enabling performance optimization based on real-time regulator status rather than static published limits.
2Speed
If the processor requests higher supply voltage to execute instructions more quickly, then processor speed increases, but the voltage regulator circuit may exceed its power delivery capabilities
Solution Approach 1:
The system transitions from static power limit management to dynamic adjustment. The voltage regulator circuit continuously monitors its actual electrical current draw and adjusts the available power capacity accordingly. The processor dynamically requests supply voltage based on real-time feedback about regulator capacity, enabling speed optimization without exceeding power delivery capabilities. This dynamic approach resolves the contradiction by adapting power delivery to actual conditions rather than relying on fixed published limits.
3Productivity
If the processor operates at maximum published power dissipation limits, then performance is maximized according to specifications, but the voltage regulator circuit operates at full capacity leaving no headroom for temperature variations
Solution Approach 1:
The system changes the parameter used for power management from static published limits to dynamic actual electrical current draw measurements. The voltage regulator monitors its real-time power consumption and communicates this to the processor, which adjusts its operating parameters accordingly. This allows the system to operate at optimal performance levels while maintaining flexibility to adapt to temperature variations and workload changes, resolving the contradiction between maximum performance and operational flexibility.
Data Source
AI summary
Reporting electrical current to a processor. At least some of the illustrative embodiments are methods including providing operational power to a processor at a voltage indicated by the processor of a computer system, measuring electrical current actually drawn by the processor, and reporting to the processor a value of electrical current drawn by the processor. The value of electrical current reported different than the electrical current actually drawn by more than a measurement error of measuring the electrical current actually drawn.