686bfe7cf304b20da7596e94 250430 Newmod Ahari Kasei Power Module Integration

Mini Power Module Integrates Coreless Current Sensing

July 7, 2025

A power-module architecture developed by Asahi Kasei and Silicon Austria Labs features Hall-effect sensors, delivering higher accuracy in a compact form factor.

Lee Goldberg

Related To:

Electronic Design

Asahi Kasei Microdevices (AKM) and Silicon Austria Labs (SAL) have completed a proof of concept for integrating a high-resolution, coreless current sensor directly into a power module, streamlining inverter design for electric vehicles (EVs).

Built on a standard PCB using off-the-shelf components, it supports more accurate motor control and higher efficiency in variable load conditions. The new architecture was developed to help bring higher energy efficiency and enable compact, lightweight design for ultra-high-current applications using next-generation silicon-carbide (SiC) power devices.

The demonstrator module leverages AKM’s new EZ232L linear Hall IC and SiC power devices to deliver precise current sensing across a wide dynamic range without a magnetic core. Integrating these capabilities improves thermal performance, shrinks the footprint, and simplifies packaging for EV traction inverters, where space and weight are at a premium. Click here for additional information.

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About the Author

Lee Goldberg | Contributing Editor

Lee Goldberg is a self-identified “Recovering Engineer,” Maker/Hacker, Green-Tech Maven, Aviator, Gadfly, and Geek Dad. He spent the first 18 years of his career helping design microprocessors, embedded systems, renewable energy applications, and the occasional interplanetary spacecraft. After trading his ‘scope and soldering iron for a keyboard and a second career as a tech journalist, he’s spent the next two decades at several print and online engineering publications.

Lee’s current focus is power electronics, especially the technologies involved with energy efficiency, energy management, and renewable energy. This dovetails with his coverage of sustainable technologies and various environmental and social issues within the engineering community that he began in 1996. Lee also covers 3D printers, open-source hardware, and other Maker/Hacker technologies.

Lee holds a BSEE in Electrical Engineering from Thomas Edison College, and participated in a colloquium on technology, society, and the environment at Goddard College’s Institute for Social Ecology. His book, “Green Electronics/Green Bottom Line - A Commonsense Guide To Environmentally Responsible Engineering and Management,” was published by Newnes Press.

Lee, his wife Catherine, and his daughter Anwyn currently reside in the outskirts of Princeton N.J., where they masquerade as a typical suburban family.

Lee also writes the regular PowerBites series.