The Distinguished Lecture on “Small-Signal Model of Coupled-Inductor Buck Converter with Current Mode Control” will take place as follows:
Date: 13 March 2026 (Friday)
Time: 10:30 – 11:30
Venue: Research Building N21, G/F, 3004
The speaker is:
Prof. YAN Yingyi, Professor, University of Electronics Science and Technology of China
The Lecture is:
Small-Signal Model of Coupled-Inductor Buck Converter with Current Mode Control
Abstract:
Multiphase Buck converter with coupled-inductors finds growing applications for its high power density and high efficiency. The knowledge of its small signal properties is indispensable for feedback design. This presentation presents a comprehensive small-signal model of a dual-phase coupled-inductor Buck converter with peak current mode (PCM) control. The model is derived using the describing function (DF) method, and the resulting infinite-order model is simplified to a pole–zero form. Based on the finite-order model, systematic analyses of the stability boundary are conducted. The accuracy and effectiveness of the proposed model are validated through SIMPLIS simulations and experimental measurements. The model provides practical design guidelines for PCM controlled dual-phase coupled-inductor Buck converters, captures the key system dynamics and offers useful insights for converter design and optimization.
Biography:
Yingyi Yan (Senior Member, IEEE) received the Ph.D. degree from Virginia Tech in 2013. He was an application engineer, power IC design engineer and senior design manager with Linear Technology (now part of Analog Devices), Milpitas, CA, USA, from 2013-2023. He developed a number of commercialized products, including controllers for multiphase point-of-load (PoL) applications, intermediate-bus power converters, and high-current integrated power stages. He holds over 10 U.S. patents. He is now a professor with University of Electronics Science and Technology of China. His research interests include modeling and analysis of power converters, advanced topologies and control techniques, and power integrated circuits.
