Headquartered in Worcester, Massachusetts, United States, Allegro MicroSystems is a company with extensive experience and global presence in the semiconductor industry, with chips manufactured by its Polar Semiconductor subsidiary in Minneapolis, Minnesota, and product testing and select product assembly in a wholly owned subsidiary in the Philippines. Products are sold in many regions around the world, including North America, South America, Europe, Japan and Asia Pacific.
Two Main Products of Allegro MicroSystems：
Sensors: Manufactures Hall-effect sensor ICs for non-contact sensing solutions for the automotive, industrial, consumer and portable electronics industries, such as direction finding, gear teeth, velocity, linearity, angle, current, and position velocity sensing.
ICs: Produce power supply ICs for motor drives, motor control, and switching regulation, which are widely used in office automation (especially printers), industry, automotive, and portable electronics.
Recently, it was reported that Allegro MicroSystems recently introduced two new high-bandwidth current sensors based on XtremeSense™ TMR technology, the CT455 and CT456. Designed to simplify high-power-density designs, these sensors are designed to improve energy efficiency, save space, and save costs. The CT455 sensor supports two standard magnetic field ranges with the ability to convert the magnetic field to a linear analog output voltage, while the CT456 supports a pre-programmed 6mT magnetic field range. The high bandwidth and low noise characteristics of these sensors make them ideal for accurate current measurement in applications such as artificial intelligence (AI) data centers and automotive powertrains.
Figure: Allegro MicroSystems unveils new sensors (Source: Electronics Engineering World)
Allegro's new current sensors, featuring XtremeSense TMR technology, offer superior magnetic sensitivity, low power consumption, and compact size to address many of the design challenges engineers face. Allegro's latest TMR sensors offer a non-contact, non-intrusive solution with 1 MHz bandwidth and 300 ns response time compared to other solutions on the market, resulting in faster power conversion. Allegro's TMR sensors enable smaller, more efficient, and more accurate current measurements in PCB or busbar applications, especially in the range of 80A to 800A, especially in the 80~200A range.
Key benefits of these sensors include a preset magnetic field range of ±6mT, which supports high-current measurements; Low noise performance improves measurement sensitivity; Optimized for rapid voltage changes over time (high dv/dt); and compact 8-pin SOIC and TSSOP package options. Allegro also provides evaluation boards for customers to test and evaluate the performance of these new sensors.
"The release of the CT455 and CT456 sensors marks a significant milestone for the first TMR products introduced by Allegro MicroSystems since the acquisition of Crocus," said Ram Sathappan, senior director of global markets and applications at Allegro MicroSystems. These sensors represent a quantum leap forward in high-bandwidth current sensing and monitoring technology, reinforcing the company's commitment to driving broader adoption of TMR technology.
Allegro MicroSystems is committed to driving the company's continued growth through technological innovation and market expansion. The company plans to focus on core technologies and products to maintain its leading position in the field of magnetic sensors and power management products; At the same time, we will increase investment in the Chinese market and build a local supply chain in China to meet the needs of Chinese customers and reduce the risk of disruption in the international supply chain.
