A Compact Substrate Coupled Inductor for Interleaved Multiphase DC-DC Converters

A compact Substrate coupled inductor structure is proposed for interleaved multiphase synchronous buck converters used to power computer processors and memories that require high current and fast current flew rate. Here the error regarding load current and the reference value will be driven to PI controller which guides them in to the pulse generator. As the result distortions and harmonics will be mitigated when compared to compact coupled inductor. As we all know that the new coupled inductor structure reduces the winding resistor power loss and makes it possible to utilize Ferrite magnetic material with low core loss. In the letter, several proposed converter implementations to achieve inverse inductor coupling are illustrated, and inductance and coupling coefficient variations are studied through a simplified reluctance model and Maxwell magnetic simulation. All the results are acquired from the MATLAB simulations and various graphs are plotted.