Current Balancing in Multi-Regulator Power Systems
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Solution Overview
Problem
In power regulation systems for microelectronic devices, multiple regulators often lead to inefficiency due to uneven current distribution, as existing technologies struggle to balance the output of multiple power regulators, especially in dynamic and transient power demands.
Innovation Solution
A method is introduced to measure and compare the average load current from each regulator, determining an overall average current to be shared, and adjusting the output of individual regulators to ensure equal current distribution across all regulators, thereby balancing the current provided to the load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple regulators are used to provide large current to the load, then the current capacity is improved, but the efficiency deteriorates due to uneven current distribution among regulators
Solution Approach 1:
The patent implements a feedback mechanism where the output current of each regulator is monitored and fed back to a control system. The control system calculates the average current across all regulators and generates correction signals to adjust each regulator's output, ensuring equal current distribution and maximizing overall efficiency.
Solution Approach 2:
The patent dynamically adjusts the operating parameters of individual regulators based on real-time current measurements. By changing the output current parameter of each regulator to match the calculated average, the system optimizes the operating point of each regulator to maintain high efficiency while providing the required total current capacity.
2Productivity
If multiple regulators are used to meet dynamic current demands, then the power delivery capability is improved, but the current balancing becomes difficult to achieve
Solution Approach 1:
The patent employs a universal control architecture where all regulators share a common control algorithm and measurement methodology. Each regulator follows the same current measurement and adjustment procedure, simplifying the overall control complexity despite having multiple regulators. The system uses a standardized feedback loop that can be applied to any number of regulators.
Solution Approach 2:
The patent dynamically adjusts the output current parameter of each regulator based on real-time measurements and calculated average current. This continuous parameter adjustment enables the system to adapt to changing load conditions while maintaining current balance, achieving both high productivity and manageable complexity through automated control.
3Device complexity
If regulators operate independently without current balancing, then the system simplicity is maintained, but the power distribution efficiency deteriorates
Solution Approach 1:
The patent introduces a feedback mechanism that monitors the output current of each regulator and compares it to the average current. The control system generates adjustment signals based on this comparison, creating a self-regulating system that automatically balances current distribution without requiring complex manual intervention or redesign of the overall system architecture.
Data Source
AI summary
A method of balancing current supplied by a plurality of regulators coupled to a load includes: measuring an average load current supplied by each regulator; determining an overall average current to be shared by the plurality of regulators; comparing each average load current with the overall average current to be shared by the plurality of regulators; and adjusting an output current of one or more of the plurality of regulators so that the plurality of regulators supply the same current to the load.