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TDA5140A Datasheet Brushless DC Motor Drive Circuit

Manufacturer: NXP Semiconductors

Overview: 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.

General Description

APPLICATIONS • VCR • Laser beam printer • Fax machine • Blower • Automotive.

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

The device is sensorless (saving of 3 hall-sensors) using the back-EMF sensing technique to sense the rotor position.

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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TDA5140A Distributor