April/May 2021

9 www.power-mag.com MARKET NEWS GeneSiC Released 3rd Generation SiC MOSFETs GeneSiC Semiconductor’s next-generation 1200V G3R™SiC MOSFETs deliver on-resistance levels ranging from 20 m Ω to 350 m Ω . System benefits include higher efficiency, faster switching frequency, increased power density, reduced ringing (EMI) and compact system size. These SiC MOSFETs, offered in optimized low-inductance discrete packages (SMD and through hole), are highly optimized for power system designs requiring elevated efficiency levels and ultra-fast switching speeds. “After years of development work towards achieving the lowest on-state resistance and enhanced short circuit performance, we released the industry’s best performing 1200V SiC MOSFETs with over 15+ discrete and bare chip products. If the next-generation power electronics systems are to meet the challenging efficiency, power density and quality goals in applications like automotive, industrial, renewable energy, transportation, IT and telecom, then they require significantly improved device performance and reliability,”said Dr. Ranbir Singh, President at GeneSiC Semiconductor. G3R SiC MOSFETs are designed to be driven at +15V / -5V gate drive. This offers broadest compatibility with existing commercial IGBT and SiC MOSFET gate drivers. www.genesicsemi.com/sic-mosfet/ Volkswagen’s High- Manganese Cathode Strategy Whilst relatively light on technical content, an interesting point during Volkswagen’s recent Power Day referred to their long-term strategy of employing high-manganese cathodes for their ‘volume segment’ - a prominent role for a chemistry not currently in widespread use. Improvements to energy density are unlikely using high-manganese cathodes, with motivation for developing these materials instead stemming from a desire to reduce cost and eliminate cobalt consumption. But what does ‘high-manganese’ refer to, and how do they compare to other cathode materials? A commentary by IDTechEx. ‘High-manganese’ cathodes could refer to several different materials, and so it is unclear as to the specific material Volkswagen were referring to. The options for high-manganese cathodes include LMO (lithium-manganese oxide), LNMO (lithium-nickel-manganese oxide), Li-Mn-rich (also abbreviated as LMR-NMC), and LMP (lithium manganese phosphate) or LMFP (lithium-manganese-iron phosphate). A comparison between NMC 811 and three high-manganese cathodes (LMFP, Li-Mn-rich, LNMO) shows that trade-offs in performance are always involved. Delving deeper into each option can help provide some insight We make cars go We help power the EV and e-mobility platforms of today & the future Insulated Litz for High-Frequency Applications Triple Insulated Winding Wires for Power Electronics UL & VDE certifications for applications up to 1,500 Vpk and thermal classes of 155°C and 180°C Specialty Litz conductors for applications up to 260°C Rubadue.com +1 970.351.6100 E P . M E R S E N . C O M NEXT- GEN BATTERY CELLS CONNECT ION AND MON I TOR ING FOR E - MOB I L I TY • Redu ce f oo t p r i n t o f t h e ba t te r y a s s emb l i e s • Modu l a r and f l ex i b l e de s i gn f o r eve r y p l a t f o rms • De s i gned f o r l a r ge s c a l e manu f a c t u r i ng • Adap t a t i ve f o rm- f a c to r • S i ng l e - l aye r l a s e r-we l ded i n te r l eaved bu sba r