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A5943
Three Phase Sinusoidal Fan Driver
Features and Benefits
Description
• Full 3-phase sinusoidal drive
The A5943 is a low noise, three phase motor driver with
• PWM speed input
integrated power bridge suitable for driving small fans and
• Analog speed input
blowers. Motor audible noise and vibration is reduced by
• FG speed output
driving the phases with sinusoidal PWM excitation. Motor
• Lock detection
current is controlled using PWM techniques to minimize the
• Current limiting
power dissipation.
• Output short circuit protection
Rotor position is determined by Hall effect elements. These
provide direct inputs to the integrated commutation and
Applications:
excitation logic.
A5943 Datasheet
