Tailored to the needs of electric vehicles (xEVs), clean energy conversion systems, and AI data center power supplies, the ACS37100 achieves a response time of 50 ns, providing the high-fidelity data required for optimal efficiency and protection in demanding high-frequency applications.
The migration to GaN and SiC promises higher power density and efficiency, but their faster switching speeds create significant control challenges. At frequencies below one megahertz, conventional magnetic current sensors lack the speed and accuracy needed to provide the high-fidelity, real-time data required for stable control and protection loops. This can make advanced systems vulnerable to damage and prevent them from operating at full capacity.
The ACS37100 is designed to solve this control challenge. Its bandwidth and response time provide the high-fidelity current sensing feedback essential for demanding control loops in high-speed switching applications. This magnetic current sensor enables designers to control faster systems, maximize efficiency, and increase power density. Leveraging TMR technology, the device offers very low noise of 26 mA average (RMS) across the entire 10 MHz bandwidth, enabling accurate, high-speed current measurements for more precise and responsive system performance.
“The ACS37100 marks a critical turning point for magnetic sensors. Our TMR technology enables current sensors that are ten times faster and four times quieter than typical Hall-based products,” says Matt Hein, business line manager for current sensors at Allegro. “This leap in performance solves significant challenges in high-voltage power conversion, especially in relation to broadband solutions.”.
The ACS37100 is designed to minimize energy loss and maximize operating efficiency and reliability, making it the ideal choice for a variety of automotive and industrial uses, such as xEV charging, clean energy conversion, and AI data center power supplies.
Features and Benefits of the ACS37100
Highest bandwidth: DC to 10 MHz
Fast response time: 50 ns
Low noise: 26 mARMS at full 10 MHz bandwidth
Built-in reinforced isolation: 5 kV (60 seconds per UL 62368-1)
Low loss: 1.2 mΩ internal conductor resistance
Automotive grade 0: operating temperature range -40 °C to +150 °C
The ACS37100 is available in an industry-standard SOICW-16 package that supports reinforced working isolation up to 565 VRMS (1097 VRMS basic) with 8 mm creepage distance and clearance. It features an adjustable voltage reference output and overcurrent fault.
