AKM Achieves Successful Proof of Concept for eFuse in High Voltage 800 V Automotive Applications
Door opener for compact, fast and reliable protection of e.g., on-board chargers or DC/DC converters for electric vehicles
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![eFuse system jointly developed by AKM and SAL (Photo: Business Wire)](https://mms.businesswire.com/media/20240603092090/en/2146577/4/sal-evb.jpg)
eFuse system jointly developed by AKM and SAL (Photo: Business Wire)
The popularity of SiC- and gallium nitride (GaN)-based power devices in electric vehicles and other high-voltage applications is on the rise. This makes it necessary to replace mechanical fuses – which have been utilized with conventional silicon (Si) based power converters – in order to immediately shut down the system when detecting an overcurrent, protecting the devices and avoiding costly maintenance.
AKM is producing the CZ39 series, a coreless current sensor with a response time of 100 ns. Its fast response capability and high accuracy allow for precise detection of overcurrent and quick system shutdown. In a joint technical verification together with the Austrian research center SAL, AKM has developed the eFuse system which solves the challenges of conventional protection systems using mechanical fuses. This solution provides the overcurrent and short circuit protection required for next-generation high-voltage EV systems with SiC- and GaN-based power devices, such as OBCs. Furthermore, the current sensor integrated into the eFuse can efficiently regulate the current in connected subsystems, thereby reducing the overall part count.
“With this joint technology validation, we have set a new standard for eFuse technology, and we are proud to combine AKM's expertise with SAL's research capabilities to achieve this innovative result. We expect that the eFuse technology will contribute to smaller and lighter EV onboard chargers," said
“By utilizing the latest AKM current sensing technologies, we can improve the reaction time of eFuses and the protection of wide-bandgap power converters,” said
AKM will present the results of the joint research with SAL at PCIM Europe 2024 (Nuremberg,
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More information about SAL is available at https://silicon-austria-labs.com/
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christian.okeefe@ak-america.com
sebastian.schmidt@asahi-kasei.eu
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