The A4946 is a low noise, three phase motor driver with
integrated power bridge suitable for driving small fans and
blowers in automotive systems. Motor audible noise and
vibration is reduced by driving the phases with sinusoidal PWM
excitation. Motor current is controlled using PWM techniques
to minimize the power dissipation.
Rotor position is determined by Hall effect elements. These
provide direct inputs to the integrated commutation and
excitation logic.
Additional product technical information and datasheets are available by
contacting the Allegro Factory.
