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[Notes] * Information on this page is current on the date of press release. * AKM is trademark of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States. * Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.
Samples of coreless current sensor for traction inverters will be available in Q3 CY2025
2025/04/11
Description
Asahi Kasei Microdevices Corporation (AKM) will start sample distribution of the contactless coreless current sensor uniquely suited to traction inverter in Q3 of CY2025. This device is a contactless current sensor for large current in traction inverters and has achieved a signifincant reduction in system size compared to conventional current sensors with magnetic cores.
This product will be on display at PCIM Europe 2025 in Nuremberg, Germany, May 6-8, 2025. In addition, AKM will exhibit a PoC that integrates a current sensor into a power module, which was discovered through joint technology verification with Silicon Austria Labs (SAL), with the aim of further miniaturization.
Coreless sensors make Inverter Modules smaller and lighter.
Features
Contributes to significant miniaturization in system size and weight
This device is a contactless current sensor capable of handling large currents of several kiloamperes. The structure does not have a magnetic core, contributing to a significant reduction in system size from existing current sensors with magnetic cores.
High resolution contributes to high efficiency in low-torque xEV operation
By leveraging the low-noise characteristics of AKM’s high-sensitivity compound Hall element, it is possible to achieve high resolution - around 1 Arms - even at high current levels, such as several hundred amperes*. As a result, high-resolution current detection is possible even at low current levels, enabling high efficiency during low-torque operation of xEVs.
* depends on the busbar structure
Technology for integrating current sensors into power modules
AKM collaboration with SAL to validate the technology for integrating current sensors into power modules. This contributes to further miniaturization and a reduction in the number of components.
Applications
- Traction inverter
- DCDC converter
- BMS
EZ232L Busbar Mounting Example 1
EZ232L Busbar Mounting Example 2
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