Page 15 - PEN eBook May 2022

Cover Story – Design Cover Story – Design

SUMMARY

The megatrends of electrification and digitalization are significantly impacting the design,
manufacturing, and commercialization of EVs as well as electromobility technology. OBCs are

under the spotlight as one of the key role players in the faster adoption of BEVs and plug-in hybrid
vehicles, competing with internal-combustion–engine cars in terms of charging times and driving
coverage.

Five major trends have been identified that influence OBC design. In all of them, the usage of
WBG technology enables better power density and efficiency and extends the power classes.
Designers must fully understand the FoMs of each technology to accurately choose the most
suitable solution for the different topologies. Furthermore, the technology itself is insufficient
to improve the different aspects of future OBC designs. Innovative packaging with a new TSC

Figure 7: Using SiC MOSFETs and/or GaN HEMT transistors instead of IGBTs and SJ devices enables the possibility of approach is essential to further exploit the benefit of WBG transistors. Finally, WBG devices enable
doubling switching frequencies both in PFC and CLLC in order to achieve power densities >4 kW/l. innovative topologies with advanced control algorithms that allow bidirectional power flow and,

consequently, the integration of BEVs into the AC grid.
According to the output voltage/battery voltage range, the proper voltage-class selection must be
made, which is either a 650-V GaN HEMT/750-V SiC MOSFETs or 1,200-V SiC MOSFETs. Selecting the Infineon’s semiconductor solutions can realize
targeted efficiency, power density, and controllability will determine the topology and the power- core functionalities in electrification, extend May 10–12, 2022: Visit us at PCIM Europe
semiconductor technology. driving range, reduce charging times, and enable in Nuremberg

the bidirectional energy flow between the high-
For a less complex approach and keeping the number of components to a minimum, the HV/HV voltage systems with the traditional 12-V domain. Infineon will present (in person and
DC/DC converter can consist of a single converter using 1,200-V SiC transistors. Learn more about the company’s offering for virtually) the latest trends in silicon
hybrid-vehicle on-board battery chargers here. Full power semiconductors and wide-
details about its WBG technologies can be found bandgap technologies at 20 demo
here. stations — clustered to your application
of interest. Our hybrid concept will give
you maximum flexibility for your trade-
show experience. Join us on the Messe

Nürnberg event grounds (Hall 7) or
virtually.

For More Information

▶ Infineon Technologies

▶ Wide-bandgap technologies

Figure 8: A three-phase/single-phase bidirectional solution by using different-voltage–class SiC MOSFETs and GaN
HEMT, as well as a series/parallel arrangement in the HV/HV DC/DC converter for different battery voltage classes

14 MAY 2022 | www.powerelectronicsnews.com MAY 2022 | www.powerelectronicsnews.com 15