Germany Samsung Chose Tender

Infineon Technologies AG supplied Samsung Electronics Co. Ltd. with power devices to couple the highest energy efficiency with lowest audible noise. They have been integrated in Samsungs brand new one-door fridge RR23A2J3XWX RR23A2G3WDX and FDR French Door Fridge RF18A5101SR inverterized refrigerator. Inverterization is an emerging DC to AC conversion trend in contemporary inverter designs. It helps the application run more quietly and smoothly while the average power consumption is reduced compared to a traditional onoff control.To meet Samsungs requirements towards improved efficiency and lower system cost together with a lower noise level the Digi Touch Cool Curd Maestro features multiple power solutions from Infineon EiceDRIVER gate-driver IC CoolSET Gen 5 for ACDC conversion and 600 V CoolMOS PFD7 for compressor drives. This is Samsungs first refrigerator design that uses discrete devices instead of power modules in the compressor.The 600 V CoolMOS PFD7 superjunction MOSFETs come with a best-in-class body diode allowing for improved soft-recovery index and the industrys fastest reverse recovery time t rr making them a perfect choice for home appliance motor drives. Compared to module-based designs using MOSFETs enables lower energy consumption especially at light-load conditions and an efficiency increase as of 1.7 percent. In addition this innovative approach allows for a heatsink-less design a 10 percent reduction in system cost and a longer refrigerator lifetime.Up to now the major home appliances market was strongly dominated by modules. It was exciting to see that with our leading MOSFET technologies we could help our customer Samsung to achieve even higher efficiency levels at lower system cost in such applications said Stefan Obersriebnig Product Line Head High Voltage Conversion of Infineons Power Sensor System Division.