@misc{10481/76892,
year = {2022},
month = {8},
url = {https://hdl.handle.net/10481/76892},
abstract = {The recent release of the standard USB-PD 3.1 speci es variable output voltages from 5 V
to 48 V featuring a step forward towards a universal adaptor but rising new challenges for the converter
topologies used up to now. In such applications, a  rst AC-DC stage is followed by a DC-DC stage.
In this paper, emerging WBG technologies are applied to the asymmetrical half-bridge  yback topology,
demonstrating the potential of such combination as a wide voltage range DC-DC stage. Its suitability for
high-density and high-ef ciency USB-PD Extended Power Range (EPR) and battery charger applications is
discussed. The impact of different switching technologies, silicon and wide band gap, is analyzed. A general
method to dimension the converter is presented and an iterative process is used to evaluate the theoretical
ef ciency under different conditions and switching devices. Finally, the advantages of the presented converter
using Gallium Nitride (GaN) devices are demonstrated in a 240 W DC-DC prototype. It achieves a
full load ef ciency of 98%, and it is able to deliver an output voltage from 5 V to 48 V with input voltage
range from 120 V to 420 V, as well an outstanding power density of 112 W/inch3 uncased.},
organization = {Infineon Technologies AG through the Spanish Regional Project	P20_00265
BRNM-680-UGR20},
organization = {Spanish Ministry of Science MCIN/AEI	PID2020-117344RB-I00},
publisher = {IEEE},
keywords = {GaN},
keywords = {Adaptor},
keywords = {USB-PD EPR},
keywords = {Power density},
keywords = {Battery charger},
title = {A High-Efficiency Isolated Wide Voltage Range DC-DC Converter Using WBG Devices},
doi = {10.1109/ACCESS.2022.3197644},
author = {Medina García, Alfredo and Morales Santos, Diego Pedro and Rodríguez Santiago, Noel},
}