Allegro Microsystems introduces DC motor controller IC for automotive applications
Allegro Microsystems
A4960 motor drive system
Allegro Microsystems Europe has introduced a three-phase sensorless brushless DC motor controller IC for controlling pumps, blowers and cooling fans in automotive applications.
The A4960 — which incorporates diagnostic and protection features — is designed for use with external N-channel power MOSFETs.
The motor drive system uses a block commutation (trapezoidal drive) approach, where phase commutation is determined, without the need for independent position sensors, by monitoring the motor back EMF.
According to the company, a programmable motor start-up scheme allows the A4960 to be adjusted for a range of motor and load combinations.
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