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Asahi Kasei’s CZ39 series of coreless current sensors allows OEMs to design smaller and lighter onboard chargers for electric vehicles. With its fast response time, low heat generation, and noise immunity, the CZ39 enables current measurements in high-speed SiC- and GaN-based power systems.
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The current sensor employs a sensitive compound Hall element that enables a response time of 100 ns, fast enough to keep up with the high switching speed of SiC and GaN devices. Its unique package maintains a primary conductor resistance of just 0.3 mΩ.
Even under continuous 40-A current flow at an ambient temperature of +125°C, heat generation is minimal. This reduces the need for bulky thermal management measures. The structure of the package provides sufficient creepage and clearance distances for use in applications above 650 V. CZ39 devices also offer enhanced noise immunity, ensuring continuous and accurate current detection in noisy automotive environments.
Asahi Kasei has begun mass production of the CZ39 series of coreless current sensors. For more information about the CZ39 series, click here.
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