Allegro MicroSystems, Inc. announced on 2025‑10‑21 the launch of the ACS37100, the first commercially available magnetic current sensor with a 10 MHz bandwidth. The device delivers a 50 ns response time and an exceptionally low 26 mA RMS noise across the full bandwidth, enabling high‑fidelity current measurement in fast‑switching power electronics.
The ACS37100 is packaged in an industry‑standard SOICW‑16 package that supports up to 565 V RMS isolation (1,097 V RMS basic) with 8 mm creepage and clearance. Its advanced tunneling magnetoresistance (TMR) technology provides four‑times lower noise and ten‑times faster performance compared to typical Hall‑effect sensors.
Designed for wide‑bandgap power devices, the sensor is tailored to electric‑vehicle (xEV) power inverters, clean‑energy power conversion systems, and AI data‑center power supplies that use GaN and SiC FETs. The high bandwidth and rapid response time allow designers to implement stable control and protection loops in high‑frequency switching environments.
By offering the first production‑ready 10 MHz TMR sensor, Allegro expands its high‑value product portfolio and positions itself to capture a growing share of the fast‑switching power electronics market. The launch supports the company’s strategy to deliver differentiated, high‑performance solutions for electrification and automation, potentially driving future revenue growth in key automotive and industrial segments.
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