Multi-Phase Coupled Inductor Layout for Uniform Phase Coupling

The patent applies asymmetry principle by intentionally designing the magnetic core with non-uniform column arrangements. Specifically, different numbers of longitudinal columns are placed in different regions (e.g., first region has different column configuration than second region), and windings are selectively positioned on specific columns rather than uniformly distributed. This asymmetric design compensates for the natural symmetry in conventional structures, achieving uniform coupling inductance across all phases despite the physical asymmetry in the magnetic core structure.

The patent segments the magnetic core into multiple distinct regions (first region, second region, third region, etc.), each with its own set of longitudinal columns and windings. This segmentation allows independent optimization of each region's parameters while maintaining overall system coordination. By dividing the complex multi-phase structure into manageable modular regions, the design achieves high power density through multiple phases without proportionally increasing manufacturing complexity, as each segment can be designed and fabricated using similar processes.

The patent applies local quality principle by creating different magnetic path characteristics in different regions of the magnetic core. Each region's longitudinal columns are designed with specific dimensions, materials, and configurations optimized for their local function. For example, columns in regions requiring faster response may have shorter magnetic paths or different core materials, while columns in regions requiring higher inductance may have longer paths or higher permeability materials. This localized optimization allows the system to achieve both fast dynamic response and sufficient inductance amount simultaneously.