Power Electronics Europe April/May Issue 2022

24 SIC DRIVERS www.analog.com Issue 2 2022 Power Electronics Europe www.power-mag.com lifetime, and, as a result, lowers the total cost of ownership (TCO). In terms of power management, the ability to overcome complex electromagnetic interference (EMI) challenges—without compromising BOM costs or PCB footprint—becomes paramount. Power efficiency, thermal performance, and packaging remain critical considerations at the power supply layer, regardless of whether the layer is for an isolated gate driver power supply circuit or auxiliary high voltage-to-low voltage DC-to- DC circuit. In all cases, the ability to neutralize EMI issues takes on greater importance for EV designers. EMC is a critical pain point when it comes to switching for multiple power supplies, and superior EMC can go a long way toward shortening testing cycles and reducing design complexities, thereby accelerating time to market. Deeper into the ecosystem of supporting componentry, advancements in magnetics sensing have yielded a new generation of contactless current sensors delivering no power loss with high bandwidth and accuracy, as well as accurate and robust position sensors for end-of-shaft and off-shaft configurations. There are between 15 and 30 current sensors targeted for deployment in a typical plug-in hybrid EV [1], with rotation and position sensors monitoring traction motor functions. Sensing accuracy and robustness to the stray field are critical attributes for measuring and maintaining efficiencies across EV power subsystems. End-to-end efficiency Looking holistically at all elements in the EV power train—from the battery to the traction inverter to the supporting components and beyond—ADI sees myriad opportunities to improve EV in a manner that enhances overall power efficiency and extends EV driving range. Digital isolation is one of the many important parts of the equation as SiC power switching technology penetrates the EV traction inverter. Likewise, automotive OEMs can leverage a multidisciplined approach to EV optimization to help ensure that all available power monitoring and control devices are working in close concert for maximum performance and efficiency. In turn they can help to overcome the last remaining barriers to mainstream consumer EV adoption—vehicle driving range and cost—while helping to ensure a greener future for all. The author can be reached at timothe.rossignol@analog.com Literature [1] Richard Dixon. “MEMS Sensors for the Car of the Future.” 4th Annual Automotive Sensors and Electronics Summit, February 2019. www.power-mag.com Ferraz Shawmut | Eldre | Idealec | FTCAP COMPLETE SOLUTION FOR EV / HEV DC fuses Bus bar Cooling DC-Link capacitors ELECTRICAL SAFETY AND POWER MANAGEMENT FOR E-MOBILITY E P. MERS EN . COM BATTERY CELLS CONNECTION AND MONITORING 0751 MERSEN AP Power Electronics 86x124 2022.indd 1 4/5/22 5:43 PM To receive your own copy of subscribe today at: www.power-mag.com