An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter

Gabsu Seo, Ratul Das, Dragan Maksimovic, Hanh-Phuc Le

Research output: Contribution to conferencePaperpeer-review

35 Scopus Citations


This paper presents a new Multi-Phase Multi-Inductor Hybrid (MP-MIH) converter that features high efficiency at large conversion ratios, while operating the switches with duty cycles larger than state-of-the-art hybrid topologies. In this converter, the capacitors are soft-charged and soft-discharged through three inductors operated in three interleaving phases. An experimental six-level three-phase converter prototype achieves 94.6% peak efficiency and 425 W/in power density for conversions from 48V to 1V-2V at loads of up to 40A. This multi-phase multi-inductor hybrid converter architecture can be extended to any number of switched-capacitor network levels to support wide range of input and output voltages and load currents in data centers, telecommunication and other high-performance digital systems.

Original languageAmerican English
Number of pages5
StatePublished - 24 May 2019
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: 17 Mar 201921 Mar 2019


Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

NREL Publication Number

  • NREL/CP-5D00-74261


  • Capacitance optimization
  • Complete soft-charging
  • Hybrid converter
  • Multi phase operation
  • Switched capacitor network


Dive into the research topics of 'An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter'. Together they form a unique fingerprint.

Cite this