Digital Logic Current Balancing for Power Supply Units
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Solution Overview
Problem
Existing methods for balancing supply currents in multiple power supply units are complex, unstable, and costly, often requiring intricate analog circuits or slow communication-based adjustments, which can lead to power supply unit failures due to unbalanced currents.
Innovation Solution
A method using a digital logic module with AND and OR gates to balance supply currents among power supply units, where a microprocessor calculates an average or median current based on signals from each unit and adjusts output currents by modifying voltage levels, ensuring balanced power distribution without significant changes to the power supply units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If analog circuits or communication-based adjustments are used to balance supply currents, then current balancing can be achieved, but the system complexity increases and stability decreases
Solution Approach 1:
The patent replaces complex analog circuits and communication-based adjustment systems with a digital logic module that uses simple logical operations (AND, OR gates) to balance supply currents. This substitution of mechanical/electronic complex systems with a digital logical system reduces device complexity while improving stability through precise digital control of the balancing process.
Solution Approach 2:
The digital logic module autonomously balances supply currents by receiving current signals from multiple power supply units, performing logical operations to determine balancing decisions, and controlling the power supply units accordingly. The system serves itself by automatically detecting current imbalances and correcting them without external intervention, improving reliability while maintaining simplicity.
2Reliability
If communication-based adjustments are used to balance supply currents, then current distribution can be optimized, but the adjustment speed becomes slow
Solution Approach 1:
The patent replaces slow communication-based adjustment mechanisms with direct digital logic control that operates in real-time. The digital logic module receives current signals and immediately processes them through logical operations to generate control signals, eliminating communication delays and achieving fast, stable current balancing.
Solution Approach 2:
The system continuously monitors supply currents and performs logical operations in advance to determine balancing actions before imbalances become critical. By proactively adjusting currents based on real-time digital logic evaluation, the system maintains stable power distribution without waiting for communication cycles or external commands.
3Reliability
If intricate analog circuits are used to balance supply currents, then current balancing can be achieved, but manufacturing costs increase
Solution Approach 1:
The patent substitutes expensive intricate analog circuits with a digital logic module composed of standard digital logic gates (AND, OR gates). This digital approach uses readily available, low-cost components to achieve current balancing functionality that would otherwise require complex, costly analog circuitry, significantly reducing manufacturing costs while maintaining reliability.
Solution Approach 2:
The digital logic module uses standardized, mass-produced logic gate components that can be easily replicated and integrated. By copying proven digital logic designs rather than creating custom analog circuits, the system achieves current balancing capability through inexpensive, easily manufacturable digital components.
Data Source
AI summary
Embodiments of the present disclosure relates to a method and device for balancing a supply current. In one embodiment, a current supply current for a load is detected. A first signal representing the current supply current is transmitted to a digital logic module. A second signal representing a maximum supply current and a third signal representing a minimum supply current are received from the digital logic module. A subsequent supply current for the load is determined based on the current supply current, the maximum supply current and the minimum supply current. By using the method and device according to the embodiments of the present disclosure, the supply currents of a plurality of power supply units for the load can be balanced a simple way with a low hardware cost.