D22.5 - A Noval Integrated-Core Lateral-Flux Coupled Inductor for Vertical Power Delivery in Voltage Regulator Modules

Thursday, March 26, 2026

12:00 PM - 1:45 PM CT

Location: Hemisfair Ballroom

Technical Dialogue Presenter(s)

Yu-Chen Chung (he/him/his)

National Taiwan University of Science and Technology

Presentation

Co-Author(s)

CC

Chien-Chun Chan

National Taiwan University of Science and Technology
HC

Huang-Jen Chiu

National Taiwan University of Science and Technology
YC

Yu-Chen Chang

National Taiwan University of Science and Technology

The design of voltage regulator modules is becoming increasingly challenging, with the size of magnetic components being a critical factor in achieving high power density. The introduction of the Zero-Bias Trans-Inductor Voltage Regulator (ZBTLVR) topology, which enables DC flux cancellation among the cores of all phases, paves the way for highly integrated implementations. This work analyzes the equivalent circuit model of the ZBTLVR and proposes a five-phase integrated-core based on a lateral-flux coupled inductor, applied to a vertical power delivery ZBTLVR module. The magnetic characteristics and coupling behavior of the proposed core are further investigated through finite element simulations using ANSYS MAXWELL. The results validate consistency with theoretical analysis for an input voltage of 12 V, an output voltage of 1 V, an operating frequency of 1 MHz, and an output current of 400 A.