USB-C/A Charger with GaN FET

Satyajit Simhadri, Phillip Pong, Venkata Prasad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this project we successfully designed a 65-Watt (W) USB-C and USB-A outlet charger for portable devices. The specifications for the charger are listed in Table II below. The difference with our charger compared to others in the market is the use of a Gallium Nitride (GaN) Field-Effect Transistor (FET) to process the switching conversion in the AC-DC conversion instead of a typical Silicon transistor. In this paper we will discuss the background of GaN transistors as well as the advantages of lower on-state drain to source resistance (Rds(on)) and parasitic capacitances that lead to improved efficiency. Then we will discuss the basic circuit topology of the 65W USB charger and the results of efficiency with the GaN FET used.

Original languageEnglish (US)
Title of host publication2024 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages95-99
Number of pages5
ISBN (Electronic)9798350350623
DOIs
StatePublished - 2024
Event7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024 - Los Angeles, United States
Duration: Jun 28 2024Jul 1 2024

Publication series

Name2024 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024

Conference

Conference7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024
Country/TerritoryUnited States
CityLos Angeles
Period6/28/247/1/24

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

Keywords

  • efficiency
  • GaN
  • switching

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