Electronic Products & Technology

Next gen isolated integrated current sensors serve automotive applications 

December 24, 2020  Stephen Law

MELEXIS MLX91220 (5 V) and MLX91221 (3.3 V) second-generation isolated integrated, Hall-effect based current sensors are qualified for use in a range of automotive and industrial applications, such as on-board chargers (OBC), dc-dc converters, power supplies, and small electric drives. With 300kHz bandwidth, devices suit a variety of power conversion applications lower than 50A RMS.
MLX91220/21 builds on the first generation of current sensors, which integrated sensing elements and high accuracy signal conditioning with voltage isolation. The new generation current sensors, are available in miniature SOIC8 narrow body and SOIC16 wide body packages. Devices improve on this by increasing the bandwidth to 300kHz, resulting in a response time of just 2 us. This response time supports higher switching frequencies and more accurate tracking in control loops. 

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