Allegro unveil 10 MHz TMR current sensor
Allegro MicroSystems has introduced a 10 MHz bandwidth magnetic current sensor designed to help power system designers master the control signal chain and unlock the full potential of fast-switching GaN and SiC FETs.
Built around the company's XtremeSense TMR (tunneling magnetoresistance) technology, the device offers 50 ns response time along with low noise of 26 mA root mean square (RMS) across the full 10 MHz bandwidth.
“The ACS37100 marks a critical inflection point for magnetic sensors. Our TMR technology is enabling current sensors that are ten times faster and four times lower noise versus typical Hall-based products,” said Matt Hein, business line director of current sensors at Allegro. “This leap in performance solves important challenges in high-voltage power conversion, especially related to wide bandgap solutions.”
The ACS37100 is available in an industry-standard SOICW-16 package that supports a working reinforced isolation up to 565 VRMS (basic 1,097 VRMS) with 8 mm creepage and clearance. It features a voltage reference output and an adjustable overcurrent fault.
It is suited to applications such as electric vehicles (xEVs), clean energy power conversion systems, and AI data centre power supplies.
