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A5940 - Three Phase Sensorless Sinusoidal Fan Driver

General Description

The A5940 three phase motor driver incorporates sinusoidal drive to minimize audible noise and vibration for medium power fans.

A sinusoidal voltage profile is applied to the windings of the motor at startup to quietly startup and gradually ramp up the motor to desired speed.

Key Features

  • AEC-Q100 qualified (K version).
  • Sinusoidal drive for low audible noise.
  • Minimum speed function.
  • Quiet startup adjustment feature.
  • High efficiency control algorithm.
  • Sensorless operation.
  • PWM speed input.
  • FG speed output.
  • Lock detection.
  • Short circuit protection (OCP).
  • Overcurrent limit (OCL).

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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A5940 Three Phase Sensorless Sinusoidal Fan Driver FEATURES AND BENEFITS • AEC-Q100 qualified (K version) • Sinusoidal drive for low audible noise • Minimum speed function • Quiet startup adjustment feature • High efficiency control algorithm • Sensorless operation • PWM speed input • FG speed output • Lock detection • Short circuit protection (OCP) • Overcurrent limit (OCL) PACKAGES: 10-contact 3 mm × 3 mm DFN package with exposed thermal pad (suffix EJ) 10-lead SOIC (suffix LN) DESCRIPTION The A5940 three phase motor driver incorporates sinusoidal drive to minimize audible noise and vibration for medium power fans. A sinusoidal voltage profile is applied to the windings of the motor at startup to quietly startup and gradually ramp up the motor to desired speed.