Hierarchical Power Delivery With Local Voltage Clamp Regulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern computer systems face inefficiencies in power delivery due to varying power consumption patterns among different circuit blocks, leading to voltage drops and potential performance issues, as existing power converter designs are often over-engineered to handle worst-case scenarios, resulting in increased cost and complexity.
Innovation Solution
A power delivery system incorporating primary and bypass voltage regulator circuits, where a primary regulator generates a shared supply voltage and local voltage regulator circuits clamp voltage levels on local supply nodes using the primary supply voltage when necessary, reducing voltage drops and improving responsiveness to load current changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate power converter circuits are used for each circuit block, then voltage stability for each block is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges multiple power converter circuits into a single shared primary power converter that serves multiple circuit blocks. This primary converter is supplemented by local regulator circuits at each block, creating a hierarchical power delivery architecture that reduces overall complexity while maintaining voltage stability through the local regulation capability.
Solution Approach 2:
The power delivery system is segmented into a primary power conversion stage and local voltage regulation stages. The primary converter handles bulk power conversion, while local regulator circuits handle fine-grained voltage adjustment for individual circuit blocks, allowing each segment to specialize in specific functions.
2Power
If power converters are over-engineered to handle worst-case scenarios, then power delivery capability is improved, but cost and device complexity increase
Solution Approach 1:
The system dynamically adjusts power delivery by enabling local regulator circuits to activate only when needed, based on actual power consumption patterns of circuit blocks. This dynamic activation allows the system to handle peak power demands without requiring the primary converter to be continuously over-engineered for worst-case scenarios.
Solution Approach 2:
The invention changes the operational parameters of the power delivery system by introducing local regulator circuits that can independently adjust their activation state. This allows the primary converter to operate at optimal efficiency points while local regulators provide supplemental power only when circuit blocks exceed normal power consumption thresholds.
3Device complexity
If a single shared primary regulator is used, then device complexity is reduced, but responsiveness to local voltage drops deteriorates
Solution Approach 1:
Local regulator circuits act as intermediary elements between the primary shared regulator and individual circuit blocks. These intermediaries detect local voltage drops and can rapidly respond by activating to provide immediate voltage support, while the primary regulator continues to provide bulk power regulation.
Solution Approach 2:
The local regulator circuits are pre-positioned at each circuit block, ready to activate immediately when voltage drops occur. This preliminary positioning allows for faster response compared to a centralized regulator that would need to detect and respond to voltage drops remotely.
Data Source
AI summary
A power delivery sub-system included in a computer system employs a primary voltage regulator circuit that generates a primary supply voltage on a primary power supply node. The power delivery sub-system also includes multiple bypass voltage regulator circuits that source corresponding bypass currents to a local power supply nodes in an integrated circuit. The integrated circuit includes multiple circuit blocks coupled to corresponding ones of the local power supply nodes, and multiple local voltage regulator circuits coupled to the primary power supply node. When a voltage level of a given local power supply node drops below a threshold value, a corresponding local voltage regulator circuit sources a supply current to the given local power supply node.