The CT455 and CT456, offer high-bandwidth and low noise that enable precise current measurements for AI data centre and automotive powertrain applications.
Today most applications use current sensor modules that are bulky, intrusive and inefficient. As a result, these solutions often lack desired accuracy and resolution and are prone to potential system failures. These issues can create major design complexities for engineers that often lead to increased cost and longer production time.
Allegro’s new current sensors, using XtremeSense TMR technology, address many of the challenges engineers face by providing improved magnetic sensitivity, low power consumption and a compact size compared to other solutions.
The CT455 sensor supports two standard field ranges, allowing it to sense and translate magnetic fields into a linear analogue output voltage, while the CT456 supports a preprogrammed 6 mT field range. These TMR sensors offer several distinct advantages, as they are designed to enable smaller, more efficient, high-accuracy current measurements on PCB or Busbar applications from 80 A up to above 800 A, depending on the configuration, with the best performance advantages in the 80-200 A range.
These TMR sensors offer a contactless, non-intrusive solution that delivers 1 MHz bandwidth and a 300 ns response time to enable faster power conversion and are suitable for designs looking to maximise power while minimising footprint.
With their compact design, enhanced reliability, and efficiency improvements these sensors provide the following key benefits:
- Preset magnetic field range of ±6 mT supports high current measurements
- Low-noise performance improves measurement sensitivity
- Optimised for rapid changes in voltage over time (high dv/dt)
- Compact 8-pin SOIC and TSSOP package options
