Multiphase Voltage Regulator Adaptive Phase Control

The patent implements dynamic phase adjustment where the number of active phases is automatically changed based on load conditions. At light loads, fewer phases are activated to reduce switching losses, while at full load, all phases are engaged to maximize current capability and efficiency. This dynamic reconfiguration resolves the contradiction between maintaining high current capability and reducing energy loss at varying load levels.

The system changes the operational parameter of phase count based on load conditions. By adjusting the number of active phases from 1 to N depending on the instantaneous load requirement, the system optimizes the trade-off between full load current capability and light load efficiency, avoiding the fixed configuration limitation.

The patent replaces analog control mechanisms with digital control implementation. The digital controller uses programmable logic and algorithms to determine phase adjustment timing and count, providing faster and more precise response to transient current demands compared to analog controllers, while maintaining acceptable device complexity through integrated digital circuitry.

The system implements feedback control where the digital controller continuously monitors load current demands and automatically adjusts the number of active phases in real-time. This closed-loop control enables rapid response to transient conditions by comparing actual load requirements with current phase configuration and making necessary adjustments.

Instead of designing for peak current with all phases always active, the system dynamically activates the minimum necessary number of phases to meet instantaneous current demands. This eliminates over-design by matching phase count to actual load requirements, reducing component stress, cooling requirements, and overall system cost while maintaining peak current capability when needed.

The multiphase buck converter autonomously manages its own phase configuration based on load conditions without external intervention. The digital controller automatically determines when to activate or deactivate phases, enabling the system to self-optimize its resource utilization and avoid the costs associated with continuous operation at peak capacity.