Powertrain solutions provider Hofer Powertrain has unveiled its new ONEboard+ solution. This new generation of the Control Board marks an evolutionary advancement in inverter control for the automotive industry, offering maximum flexibility and cost efficiency for a variety of applications in e-mobility.

The ONEboard+ is a crucial component integrated into an inverter, determining its functionality. This important element seamlessly combines hardware and software, providing a comprehensive solution for the complex control requirements of the most advanced electric vehicles of all kinds.

Based on the success of the original ONEboard, the ONEboard+ enables significant cost savings for an inverter. These savings are particularly noticeable for original equipment manufacturers at the vehicle level.Source: Hofer Powertrain In addition to the basic inverter function, the significantly increased computing power allows for the integration of additional functions such as an on-board charger or a second inverter in a single layout. The new solution also plays a crucial role in the implementation of torque vectoring. The new generation of this Control Board supports future-proof functionalities, including three-level inverter solutions, to maximize performance and efficiency. Compliance with the latest cybersecurity standards is ensured through the use of the latest microcontroller technology.

The ONEboard+ now supports up to three independent CAN nodes. The gate driver features an adaptive slew rate, which can reduce switching losses by up to 25%. Additionally, bill of material costs can be significantly reduced compared to the previous solution by incorporating the electrical drive for externally excited synchronous machines as an integrated solution rather than a separate component. Furthermore, the ONEboard+ supports both 12 V and 24 V electrical systems, making it suitable for commercial vehicles as well.

The goal in projects is to meet the ASIL D requirements for functional safety with the ONEboard+. With over 40 years of experience in developing complete drive systems, Hofer Powertrain also realizes complete inverter solutions based on the ONEboard+ for both 400 V and 800 V high voltage electrical systems, achieving peak power outputs of more than 500 kW. The high scalability of the ONEboard+ makes it easily adaptable to meet the diverse requirements of manufacturers.