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TDA5140A - Brushless DC motor drive circuit

General Description

APPLICATIONS VCR Laser beam printer Fax machine Blower

Automotive.

The TDA5140A is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode.

Key Features

  • Full-wave commutation (using push/pull drivers at the output stages) without position sensors.
  • Built-in start-up circuitry.
  • Three push-pull outputs:.
  • 0.8 A output current (typ. ).
  • low saturation voltage.
  • built-in current limiter.
  • Thermal protection.
  • Flyback diodes.
  • Tacho output without extra sensor.
  • Position pulse stage for phase-locked-loop control.
  • Transconductance amplifier for an external contr.

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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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INTEGRATED CIRCUITS DATA SHEET TDA5140A Brushless DC motor drive circuit Product specification Supersedes data of March 1992 File under Integrated Circuits, IC02 April 1994 Philips Semiconductors Philips Semiconductors Product specification Brushless DC motor drive circuit FEATURES • Full-wave commutation (using push/pull drivers at the output stages) without position sensors • Built-in start-up circuitry • Three push-pull outputs: – 0.8 A output current (typ.) – low saturation voltage – built-in current limiter • Thermal protection • Flyback diodes • Tacho output without extra sensor • Position pulse stage for phase-locked-loop control • Transconductance amplifier for an external control transistor. QUICK REFERENCE DATA Measured over full voltage and temperature range.