Two-Phase, Dual Interleaved Buck–Boost DC–DC Converter for Automotive Applications

Research output: Contribution to journalArticlepeer-review

  • External authors:
  • Teresa-Raquel Granados-Luna
  • Ismael Araujo-Vargas
  • Kevin Cano-Pulido
  • Pedro-Enrique Velazquez-Elizondo
  • Ilse Cervantes
  • Francisco Gomez-Olguin


A two-phase buck-boost converter utilizing dual interleaving is presented in this article. The dual interleaving consists of an interphase transformer (IPT) that doubles the ripple frequency together with two conventional buck-boost switching arms, mitigating the inductor ripple current and aiding to increase the power density of the converter. A description of the design and selection of the power devices is presented for a 32-kW, 75-kHz dual interleaved SiC prototype with an IPT, such that a power density of 7.4 kW/kg is achieved. The operation of the circuit is verified experimentally using a prototype with 315-385 V supply range and 350-V output voltage, achieving 97.1% peak efficiency at 32 kW. The experiments reveal that the interleaved coupled currents are equalized without an active balancer.

Bibliographical metadata

Original languageEnglish
Article number8840902
Pages (from-to)390-402
Number of pages13
JournalIEEE Transactions on Industry Applications
Issue number1
Early online date17 Sep 2019
Publication statusPublished - 1 Jan 2020