We’ve seen how silicon carbide semiconductors supply a path of much less resistance that permits higher-voltage energy electronics for next-generation electrical autos with massive batteries and quick charging instances.
Now, Infineon goals to speed up the pattern with its CoolSiC metallic oxide semiconductor field-effect transistor (MOSFET) expertise within the HybridPACK Drive CoolSiC. This can be a full-bridge module with 1200 V blocking voltage optimized for traction inverters in EVs.
It’s a energy module primarily based on the automotive CoolSiC trench MOSFET expertise for high-power density and high-performance functions. This provides increased effectivity in inverters with longer ranges and decrease battery prices, notably for high-voltage 800-volt, massive battery methods.
“The automotive e-mobility market has turn out to be extremely dynamic, paving the bottom for concepts and innovation”, mentioned Mark Münzer, Head of Innovation and Rising Expertise at Infineon. “As the value of SiC units considerably decreases, the commercialization of SiC options will speed up, leading to extra cost-efficient platforms adopting SiC expertise to enhance the vary of electrical autos.”
To this point, we’ve seen 800-v methods in Porsche and Audi EVs, and the upcoming Lucid EV’s engineers have made a lot of the benefits they anticipate to reap from silicon carbide expertise. Infineon will convey Hyundai into the 800-v fold, with that firm’s deliberate Electrical International Modular Platform as a buyer for Infineon’s CoolSiC.
“The 800-volt system of the Electrical International Modular Platform represents the technological foundation for the subsequent era of electrical autos with diminished charging time”, mentioned Jin-Hwan Jung, Head of the Electrification Improvement Staff at Hyundai Motor Group. “Through the use of traction inverters primarily based on Infineon’s CoolSiC energy module, we had been in a position to enhance the vary of the car by greater than 5 p.c due to effectivity features ensuing from the decrease losses of this silicon carbide resolution in comparison with silicon-based resolution.”
Infineon launched the HybridPACK Drive in 2017 utilizing silicon expertise with a scalable energy vary of 100 kilowatts to 180 kW inside the 750-v and 1200-v courses. The corporate has shipped a couple of million of them for greater than 20 electrical autos.
This new silicon carbide CoolSiC model makes use of a silicon carbide trench MOSFET construction. Its trench construction allows a better cell density than flat planar constructions, contributing to its means to function at decrease gate-oxide discipline strengths with elevated reliability.
The change to silicon carbide lets the inverter design obtain increased energy of as much as 250 kW within the 1200-v class, larger driving vary, smaller battery measurement and optimized system measurement, and value.
This primary-generation CoolSiC automotive MOSFET expertise is optimized to be used in EV traction inverters, with a concentrate on minimizing conduction losses, particularly underneath partial load circumstances. Mixed with low switching losses of silicon carbide MOSFETs, this allows an effectivity acquire in inverter operation in comparison with silicon.
These semiconductors are at the moment obtainable, in order quickly as Hyundai is able to ship new automobiles constructed on its E-GMP EV platform.