OICC Press Majlesi Journal of Electrical Engineering 2345-3796 2026 11 06 An Interleaved Step-up DC-DC Converter with Lossless Snubber 10.57647/j.mjee.2025.16967 EN Arman Hovsep Department of Electrical Engineering, Isf.C., Islamic Azad University, Isfahan, Iran Majid Delshad Department of Electrical Engineering, Isf.C., Islamic Azad University, Isfahan, Iran https://orcid.org/0000-0002-2637-5965 Bahador Fani Department of Electrical Engineering, Isf.C., Islamic Azad University, Isfahan, Iran Mahdi Sajadieh Islamic Azad University, Isfahan Journal Article 2026 11 06 In this paper, an interleaved step-up converter with two lossless snubbers is introduced, where the snubbers ensure zero-current switching for the main switches, eliminating the need for extra switches. Additionally, the energy from the snubbers is transferred to the output. All the switches in the converter are grounded, which negates the requirement for an isolated driver circuit. Another key characteristic of the converter is the balanced current across both phases. Moreover, the low voltage stress on the switches allows for the use of switches with lower drain-source resistance. The proposed converter has been thoroughly analyzed, and to validate the theoretical analysis, a prototype was simulated in PSPICE software and a 100W prototype was fabricated. The efficiency at full load is 96%, showing a 5% improvement compared to its hard-switching counterpart.