Voltage Regulator Power Delivery With Thermal Feedback
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Solution Overview
Problem
Existing voltage regulators (VRs) in computer systems generate significant heat, and managing this heat within design specifications is challenging, particularly when operating at high power levels, which can lead to performance degradation and throttling issues.
Innovation Solution
Implementing a proportional-integral-derivative (PID) feedback mechanism to adjust power delivery to functional blocks based on VR thermal conditions, allowing dynamic power management by changing power consumption levels in a controlled manner to maintain VR temperature within safe limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If voltage regulators operate at high power levels to maintain system performance, then productivity is improved, but temperature increases causing thermal management issues
Solution Approach 1:
The patent implements dynamic power adjustment by continuously monitoring VR temperature and adjusting power delivery in real-time. The system transitions from static power management to dynamic control, modifying operational parameters based on thermal conditions to maintain performance while preventing overheating
Solution Approach 2:
The patent employs a feedback mechanism where temperature sensors monitor VR thermal conditions and feed this information back to the power management system. This closed-loop control enables the system to adjust power delivery based on actual thermal state, resolving the contradiction between maintaining high performance and preventing thermal issues
2Productivity
If voltage regulators supply more power to functional blocks, then productivity is improved, but heat generation increases beyond design specifications
Solution Approach 1:
The system uses thermal feedback from temperature sensors to dynamically adjust power delivery levels. When heat generation approaches design specifications, the feedback mechanism reduces power delivery to functional blocks, preventing excessive heat while maintaining optimal performance within thermal constraints
Solution Approach 2:
The patent changes operational parameters (power delivery levels) based on thermal conditions. By dynamically adjusting voltage and/or current supplied to functional blocks, the system modifies power delivery parameters to maintain productivity while keeping heat generation within acceptable limits
3Device complexity
If voltage regulators operate without dynamic power adjustment, then device complexity is reduced, but thermal management capability deteriorates
Solution Approach 1:
The patent implements self-service thermal management where the power management system automatically monitors its own thermal conditions and adjusts power delivery without external intervention. This self-regulating mechanism improves thermal management reliability while adding minimal complexity, as the system serves its own thermal control needs
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
This approach enables efficient operation of processors in high power zones for extended periods while preventing overheating, reducing the need for aggressive throttling and maintaining system performance.
Implementation Method 1
When the VR is being operated, these components generate heat. In general, the more power the VR supplies, the more heat it generates.
Data Source
AI summary
A first circuit to receive from a sensor a thermal condition of a voltage regulator while circuitry comprising the voltage regulator is to regulate delivery of power to a power domain having first and second components. The circuitry is to control a first power consumption rate of the first component based on a first parameter and control a second power consumption rate of the second component based on a second parameter. The first circuit monitors the thermal condition and generates an evaluation result based on a test criterion. A second circuit receives from the first circuit a signal based on the evaluation result. Based on the signal, the second circuit is to signal the circuitry to change the first parameter. An amount of any change to the second parameter based on the evaluation result is different than an amount of change to the first parameter based on the evaluation result.