SoC Power Control Circuit for Cluster Voltage Reallocation
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Solution Overview
Problem
High-performance processors in electronic devices consume significant power, necessitating efficient power management to prevent excessive energy consumption, which existing power management integrated circuits (PMICs) struggle to effectively manage across multiple processing units within a system on chip (SoC).
Innovation Solution
An electronic circuit is designed to calculate and adjust power distribution across different clusters within an SoC, using a converter and controller to output interrupt signals based on calculated power thresholds, ensuring that each cluster does not exceed its available power limits, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large amount of works is allocated to one core to process a large amount of data, then the processing capability is improved, but the power consumption increases significantly
Solution Approach 1:
The processor is divided into multiple cores that can be selectively activated. Instead of overloading a single core, the workload is distributed across multiple cores, allowing the system to maintain high processing capability while each core operates at a lower, more power-efficient level. The PMIC monitors and controls power distribution to individual cores based on actual workload requirements.
Solution Approach 2:
The system dynamically adjusts the operating state of processor cores based on real-time power availability and workload demands. The PMIC continuously monitors power consumption and processing requirements, dynamically switching cores between active, idle, and sleep states to optimize the balance between processing capability and power consumption.
2Ease of operation
If power management is simplified to reduce complexity, then the ease of operation is improved, but the ability to efficiently manage power across multiple processing units deteriorates
Solution Approach 1:
The PMIC implements self-service power management by autonomously monitoring power consumption, calculating available power for each core, and making real-time power allocation decisions without requiring complex external control. The system automatically detects when power limits are approached and adjusts core operation accordingly, simplifying the interface while maintaining sophisticated power management internally.
Solution Approach 2:
The PMIC incorporates continuous feedback mechanisms that monitor both power consumption and processing performance. This feedback loop enables the system to automatically adjust power distribution to maintain optimal efficiency while preventing power overload. The feedback system provides real-time information about core performance and power usage, enabling intelligent power management decisions.
Data Source
AI summary
An electronic circuit includes a converter and a controller. The converter outputs a first voltage for a first cluster and a second voltage for a second cluster. When a first power to be provided to the first cluster based on the first voltage is lower than a first available power of the first cluster and a second power to be provided to the second cluster based on the second voltage is higher than a second available power of the second cluster, the controller outputs a first interrupt signal such that a level of the second voltage is adjusted based on a sum of the first power and the second power and a first threshold value determined based on the first available power and the second available power.