Allegro MicroSystems, a global leader in power and sensing solutions for motion control and energy-efficient systems, announced the release of samples for the ACS37601, an ASIL C safety-rated, high-precision, field current sensor with best-in-class accuracy for traction and auxiliary inverter systems as well as battery management systems (BMS) in electric vehicles (EVs).
Designers of inverter and battery management systems are challenged to achieve higher safety targets based on new Automotive Safety Integrity Level (ASIL) requirements. To enable customers to meet these new safety requirements, while increasing system efficiency and extending battery life, Allegro has developed the ACS37601 programmable linear Hall-effect current sensor IC with overcurrent, overtemperature, and self-test capabilities. Designed to achieve high accuracy and resolution without compromising bandwidth, the ACS37601 is Allegro’s highest-accuracy field current sensor for applications requiring measurement capability greater than 200 Amperes.
To be used along with a C-core, the ACS37601 is the first ASIL C-rated field current sensor that achieves 0.8% sensitivity error and less than 5 mV offset error over the automotive temperature range, and—with 30% less noise than legacy devices—this IC is ideal for battery management applications. The high operating bandwidth from DC to 240 kHz and fast 2 μs response time enable new performance in DC battery charging and high-frequency automotive inverter applications. To support adoption of the most advanced microprocessors without requiring additional components, the ACS37601 works with 5 V or 3.3 V power supplies.