Allegro MicroSystems introduces two new high-bandwidth current sensors based on XtremeSense TMR technology

Allegro MicroSystems, Inc. has introduced two new XtremeSense™ TMR sensors that optimize high power density designs, resulting in space and cost reductions accompanied by enhanced energy efficiency. In the realm of AI data center and automotive engine applications, Allegro’s most recent offerings, CT455 and CT456, provide exceptional bandwidth and minimal noise, therefore facilitating accurate current measurements.

Currently, the dominant market applications utilize sensor modules that are large, invasive, and inefficient. Consequently, these solutions normally lack the appropriate level of precision and resolution and are susceptible to possible system malfunctions. These limitations might give rise to significant design intricacies for engineers, which frequently result in escalated expenses and extended manufacturing duration.

Allegro’s enhanced current sensors, utilizing XtremeSense TMR technology, effectively tackle the obstacles encountered by engineers by offering exceptional magnetic sensitivity, little power consumption, and a small form factor in comparison to alternative alternatives. The CT455 sensor is capable of detecting and converting magnetic fields into a linear analog output voltage within two predefined field ranges. On the other hand, the CT456 sensor is designed to operate within a predetermined field range of 6 mT. In contrast to other solutions available in the market, our latest TMR sensors provide unique benefits. They are specifically engineered to facilitate smaller, more efficient, and highly accurate current measurements on PCB or Busbar applications. The measurements can range from 80 A to over 800 A, depending on the configuration. The most significant performance advantages are observed in the 80-200 A range.

In contrast to conventional high-power current sensors, Allegro’s latest TMR sensors provide a contactless and non-intrusive solution that achieves a bandwidth of 1 MHz and a response time of 300 ns, allowing for faster power conversion. For individuals aiming to optimize power consumption while reducing physical space, the small size, increased dependability, and efficiency enhancements of Allegro’s most recent sensors make them a superior option, offering the following significant advantages:

- High current measurements can be made with a magnetic field range of ±6 mT

- Low noise ability makes measurements more accurate

- Ideal for voltage changes that happen quickly over time (high dv/dt)

- There are compact 8-pin SOIC and TSSOP package choices