Integrated Circuit Dynamic Power Limit Management
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Solution Overview
Problem
Existing integrated circuits face challenges in dynamically managing power consumption, as traditional methods either require costly OS upgrades or fail to accurately predict and adjust power needs, leading to inefficient power usage and performance limitations.
Innovation Solution
An integrated circuit with a dynamically variable power limit, utilizing on-chip voltage-controlled frequency modulation to self-regulate power consumption by adjusting clock frequency and voltage in response to changing workload demands, allowing for optimal performance within specified power limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the clock frequency is limited to hold power consumption below an acceptable level, then power consumption is reduced, but processing speed deteriorates
Solution Approach 1:
The patent implements dynamic frequency scaling that adjusts the clock frequency in real-time based on the actual computational workload. When the workload is low, the frequency is reduced to save power; when the workload is high, the frequency is increased to maintain performance. This dynamic adjustment resolves the contradiction by making the frequency adaptive rather than fixed.
Solution Approach 2:
The patent changes the operating parameters (frequency and voltage) based on workload conditions. By monitoring the actual power consumption and computational demands, the system adjusts these parameters to optimize the trade-off between power efficiency and processing speed, preventing both excessive power consumption and unnecessary performance limitations.
2Use of energy by stationary object
If the voltage and frequency are set based on worst-case computational loads, then power consumption is controlled, but performance during low-load periods deteriorates
Solution Approach 1:
The patent dynamically changes the operating voltage and frequency based on actual workload conditions rather than maintaining fixed worst-case settings. The system monitors computational demands and adjusts parameters accordingly, allowing high performance during peak loads while achieving power efficiency during low-load periods.
Solution Approach 2:
The system includes on-chip power management logic that autonomously monitors power consumption and workload conditions, then automatically adjusts frequency and voltage without external intervention. This self-regulating mechanism ensures optimal performance-power balance adapts to changing conditions in real-time.
3Use of energy by stationary object
If only the clock frequency is reduced during non-compute intensive activity, then power consumption is reduced, but energy per task remains constant
Solution Approach 1:
The patent simultaneously adjusts both voltage and frequency based on workload conditions. Since power consumption is proportional to V²F (voltage squared times frequency), reducing both parameters during low-load periods achieves super-linear power savings, thereby reducing energy per task rather than merely maintaining constant energy while reducing power.
Data Source
AI summary
An integrated circuit having a dynamically variable power limit is provided. The integrated circuit comprises power management logic operable to receive notification of a dynamically set power limit value and operable to dynamically regulate the integrated circuit's power consumption to comply with the dynamically set power limit value.