Asahi Kasei Microdevices develops ultra-fast current sensing technology

Bandwidth of several MHz

Düsseldorf and Tokyo, 18 April 2023 – Asahi Kasei Microdevices (AKM) is developing a new ultra-fast response current sensing technology. This technology is ideal for high frequency applications and will allow for smaller, more efficient electrical systems. AKM will demonstrate the new technology for the first time from 9-11 May 2023 at PCIM Europe.

To further optimize efficiency and packaging size of high frequency applications, Asahi Kasei Microdevices is developing a new current sensing technology featuring an ultra-fast response time. Utilizing this technology substantially increases the switching frequency of power supply systems, such as AC-DC and DC-DC converters, contributing to the overall size reduction of electrical systems. It is ideal for high frequency control in applications using silicon carbide (SiC) or gallium nitride (GaN) switching devices, as well as for the overcurrent protection of electrical systems. In the future, Asahi Kasei Microdevices is aiming to utilize this technology in automotive applications, such as on-board chargers and DC-DC converters.

Asahi Kasei Microdevices will showcase the new technology for the first time in a demonstration showing the ultra-fast measurement of a triangular current wave at PCIM Europe, the leading international exhibition and conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, from 9-11 May 2023 in Nuremberg, Germany. In addition, the company will showcase an AC servomotor control demonstrator utilizing a coreless current sensor IC with a sigma-delta digital output, as well as the CZ375x, a coreless current sensor IC of the Currentier product line with a high current capability up to 100 Ampere root mean square (Arms).

About Asahi Kasei Microdevices (AKM)
AKM is a Japan-based company, operates an electronic components business as a member of the Asahi Kasei Group’s material sector. AKM provides customers with unique products by combining the compound semiconductor technology mainly used for magnetic sensors with the ASIC/analog circuit technology based on silicon semiconductors. Our products and solutions with these features are expanded over a wide range of fields, including mobile communication devices and consumer products as well as automotive electronics devices, household equipment, and industrial equipment.

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About the Asahi Kasei Corporation
The Asahi Kasei Group contributes to life and living for people around the world. Since its foundation in 1922 with ammonia and cellulose fiber businesses, Asahi Kasei has consistently grown through the proactive transformation of its business portfolio to meet the evolving needs of every age. With more than 46,000 employees around the world, the company contributes to a sustainable society by providing solutions to the world’s challenges through its three business sectors of Material, Homes, and Health Care. Its Materials sector, comprised of Environmental Solutions, Mobility & Industrial, and Life Innovation, includes a wide array of products from battery separators and biodegradable textiles to engineering plastics and sound solutions. For more information, visit

Asahi Kasei is also dedicated to sustainability initiatives and is contributing to reaching a carbon neutral society by 2050. To learn more, visit

Company Contact Europe
Asahi Kasei Europe GmbH
Sebastian Schmidt
Fringsstrasse 17, 40221 Düsseldorf
Tel: +49 (0) 211-3399-2058

About the Asahi Kasei Corporation
Asahi Kasei Corporation is a globally active diversified technology company with operations in the Material, Homes, and Health Care business sectors. The Material sector encompasses fibers & textiles, petrochemicals, performance polymers, performance materials, consumables, battery separators, and electronic devices. The Homes sector provides housing and construction materials to the Japanese market. The Health Care sector includes pharmaceuticals, medical devices, and acute critical care devices and systems. With more than 46,000 employees around the world, the Asahi Kasei Group serves customers in more than 100 countries and achieved sales of 18.9 billion euros (2,461 billion yen) in the fiscal year 2021 (April 1, 2021 – March 31, 2022).
Asahi Kasei is „Creating for Tomorrow“ with all operations sharing a common mission of contributing to life and living for people around the world. For more information, visit, and

Asahi Kasei Europe GmbH
Sebastian Schmidt
Fringsstraße 17
40221 Düsseldorf
Phone: +49 (0)211 3399-2058
E-Mail: e46dc37805a33ccba06cd3973b4477e59ef226c6

financial relations GmbH
Henning Küll
Louisenstraße 97
61348 Bad Homburg
Phone: +49 (0) 6172 27159 12
E-Mail: e46dc37805a33ccba06cd3973b4477e59ef226c6

Bildquelle: Asahi Kasei