Power Conversion in Mild Hybrid Electric VehiclesSeptember 11, 2020 by ON Semiconductor
Modern Mild Hybrid Electric Vehicles (MHEV) are designed to provide many of the fuel economy benefits of full hybrid electric vehicles with only modest increments in cost and complexity. The addition of a 48 V battery means an MHEV is a dual−voltage vehicle, which presents its own unique design challenges. These design challenges are centered on managing the charge and discharge cycles of the dual battery system while attempting to maintain the highest overall system efficiency.
In this whitepaper, ON Semiconductor highlights the methods for overcoming these MHEV design challenges, including sub−system design details for maximizing cost and efficiency. The realization of power converters using Automotive Power Modules and GaN devices are also explored.