Improving the Power Efficiency of Welding Machines using 1200 V CoolSiC(TM) MOSFET Discretes with .XT Interconnection Technology

Konferenz: PCIM Europe 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
10.05.2022 - 12.05.2022 in Nürnberg, Germany

doi:10.30420/565822166

Tagungsband: PCIM Europe 2022

Seiten: 5Sprache: EnglischTyp: PDF

Autoren:
Cerezo, Jorge (Infineon Technologies AG, Austria)

Inhalt:
This paper presents an improved power supply solution for welding machines using the silicon carbide CoolSiC(TM) MOSFET 1200 V in a TO-247 package with .XT interconnection technology, and a wellknown but unconventional, cooling design concept. The design significantly enhances heat dissipation, enabling higher output power levels typically achieved by power module solution designs. The proposed discrete solution is demonstrated with a 500 A welding machine power supply that features a full-bridge topology inverter with increased efficiency and power density, helping to reduce the cost, weight, and size of welding machines.