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A4923 - 3-Phase Sinusoidal Motor Controller

General Description

Designed to control three-phase brushless DC motors, the A4923 is capable of high-current gate drive for an all N-channel power MOSFET 3-phase bridge.

Sinusoidal current control is employed via output PWM, to minimize vibration, noise, and torque ripple.

Key Features

  • Sinusoidal Drive Current.
  • Hall Element Inputs.
  • PWM Current Limiting.
  • Dead-time Protection.
  • FGO (Tach) Output.
  • Internal UVLO.
  • Thermal Shutdown Circuitry.

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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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A4923 3-Phase Sinusoidal Motor Controller Features and Benefits • Sinusoidal Drive Current • Hall Element Inputs • PWM Current Limiting • Dead-time Protection • FGO (Tach) Output • Internal UVLO • Thermal Shutdown Circuitry Description Designed to control three-phase brushless DC motors, the A4923 is capable of high-current gate drive for an all N-channel power MOSFET 3-phase bridge. Sinusoidal current control is employed via output PWM, to minimize vibration, noise, and torque ripple. Internal circuit protection includes thermal shutdown with hysteresis, over-current, and dead-time protection. Special power up sequencing is not required. The A4923 is supplied in a 32 terminal 5×5×0.9mm QFN package (suffix ET) with exposed pad for enhanced thermal dissipation.