The increased number of fan motors in HVAC, heat pump, and battery air cooling systems of EVs requires greater integration and quieter operation. Allegro offers highly integrated half-bridge and BLDC motor controllers in smaller footprints, facilitating simplified 48V/12V designs
. In the relative quietness of EVs, sounds from HVAC systems
, power steering
, and switching mechanisms become distinctly audible. To mitigate this, Allegro has developed QuietMotion products equipped with optimized algorithms based on sinusoidal and field-oriented control (FOC), designed to diminish acoustic noise during start-up and speed and torque regulation. This fully integrated solution simplifies the design-in process, allowing customers to concentrate on thermal management
rather than grappling with complex motor control techniques for noise reduction.