Conversor CC-CC Não Isolado SEPIC-Zeta

Klaus Malone Martins Damasceno; Matheus Mulherchen Golz Costa; Caio Meira do Amaral; Enio Roberto Ribeiro; Fernando Lessa Tofoli

doi:10.20906/CBA2022/3661

Klaus Malone Martins Damasceno Universidade Federal de São João del-Rei, Praça Frei Orlando, 170 - B. Centro 36307-352 São João del-Rei-MG
Matheus Mulherchen Golz Costa Universidade Federal de São João del-Rei, Praça Frei Orlando, 170 - B. Centro 36307-352 São João del-Rei-MG
Caio Meira do Amaral Universidade Federal de Itajubá, Av. BPS, 1303 - B. Pinheirinho 37500-903 Itajubá-MG
Enio Roberto Ribeiro Universidade Federal de Itajubá, Av. BPS, 1303 - B. Pinheirinho 37500-903 Itajubá-MG
Fernando Lessa Tofoli Universidade Federal de São João del-Rei, Praça Frei Orlando, 170 - B. Centro 36307-352 São João del-Rei-MG

DOI: https://doi.org/10.20906/CBA2022/3661

Keywords: graft technique, integrated converters, non-isolated DC-DC converters

Abstract

This work proposes a non-isolated single-switch DC-DC converter based on the integration of the classical single-ended inductance converter (SEPIC) and Zeta topologies using the graft technique. The resulting topology can provide high step-down or high step-up depending on the rated duty cycle. It also shows some interesting advantages, that is, both the input and output stage currents are non-pulsating with low ripple, resulting in low electromagnetic interference (EMI) levels. A thorough mathematical analysis is derived, from which it is possible to obtain simulation results aiming at validating the theoretical assumptions.