- Asahi Kasei Microdevices Corporation (AKM) and Silicon Austria Labs GmbH (SAL) have achieved proof of concept for a current sensor-integrated power module for electric vehicles.
- The new technology enhances energy efficiency, offering a downsized, lightweight solution for ultra-high current applications in traction inverters.
- AKM will showcase this innovative technology at PCIM Europe 2025 in Nuremberg, Germany.
Asahi Kasei Microdevices Corporation (AKM) and Silicon Austria Labs GmbH (SAL) have successfully completed a joint proof of concept aimed at integrating a current sensor into a power module. This groundbreaking project focuses on automotive applications, specifically traction inverters and DC-DC converters, promising enhancements in energy efficiency and a more compact design for electric vehicles (EVs).
The newly developed technology, which utilizes AKM's EZ232L, a linear Hall IC for coreless current sensors, significantly improves the efficiency of traction inverters. This innovation is crucial for systems that require precise operation over a wide current range, such as in electric vehicle (xEV) drive systems.
Traction inverters, serving as the bridge between the battery and the drivetrain, are key to converting direct current into alternating current efficiently. The collaboration between AKM and SAL resolves limitations of conventional magnetic core-based current sensing, providing a streamlined solution that incorporates direct copper bonded power semiconductors and gate driving circuits.
Toshinori Takatsuka, General Manager of AKM's current sensor business, expressed optimism about the collaboration's results, highlighting the potential market impact of this innovative power module. Thomas Langbauer of SAL noted that the module's all-in-one design, using standard PCB and off-the-shelf components, offers both flexibility and cost advantages, catering to small-to-medium production volumes.
Interested parties can witness the unveiling of this joint research at PCIM Europe 2025, taking place from May 6 in Nuremberg, Germany. The companies are also exploring future collaborations to further enhance market offerings.
