By Gina Roos, editor-in-chief
Allegro MicroSystems puts a spotlight on two of its newest products — a coreless current sensor IC and the first device in its family of QuietMotion brushless DC (BLDC) motor control solutions — at PCIM Europe. Other products on display include fan and pump motor drivers, power monitoring ICs, and magnetic rotary encoders.
All of the products on display target space savings, efficiency, and safety. Case in point: The ACS37650 coreless current sensor IC saves space by eliminating the need for a concentrator core in high-current sensing applications, such as electric vehicle traction inverters. Other features include closed-loop sensing with extremely low noise and high resolution and operation over an extended automotive temperature range.
Touted as the industry’s quietest brushless BLDC motor control solution, Allegro’s AMT49406 is claimed as the first-to-market field-oriented control (FOC) BLDC electric motor controller that is customer-code−free. An FOC algorithm is fully integrated for the best efficiency and acoustic noise performance.
Allegro’s automotive-qualified 1-MHz current sensor ICs also demoed at the booth provide faster and higher current-sensing ranges in space-saving packages. Allegro said that these current sensor ICs are more reliable than transformers and help reduce bill of materials. Applications include automotive on-board chargers, industrial power supplies, and intelligent motion applications.
Designers will also find electronic power steering (EPS) safety systems, which meet stringent ASIL requirements and are built in accordance with ISO 2626, and fan and pump motor drivers that feature embedded FOC, initial position detection (IPD) algorithms, and Allegro’s QuietMotion technology for ultra-quiet operation with zero reverse-angle startup. A demo will let visitors see and hear the difference between the AMT49406 BLDC sensorless motor drivers and a traditional sensorless startup solution with an interactive interface.
Another technology shown at the booth is Allegro’s Vertical Hall Technology used in its magnetic encoders. The technology enables dual-channel Hall latches that sense in two dimensions simultaneously. This design translates into fewer parts, less space, lower power, and greater flexibility. These 2D sensors aren’t affected by magnetic pole-pitch and air gap and don’t rely on the precise location or spacing of sensors.
Visitors will find these products and more at Allegro’s Booth #255, Hall 6.
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