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TDA5145 - Brushless DC motor drive circuit

General Description

APPLICATIONS General purpose spindle driver e.g.: Hard disk drive Tape drive

Optical disk drive.

The TDA5145 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:.
  • output current 2.0 A (typ. ).
  • built-in current limiter.
  • soft-switching outputs for low Electromagnetic Interference (EMI).
  • Thermal protection.
  • Flyback diodes.
  • Tacho output without extra sensor.
  • Motor brake facility.
  • Direction control input.
  • R.

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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 TDA5145 Brushless DC motor drive circuit Product specification Supersedes data of March 1992 File under Integrated Circuits, IC11 June 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: – output current 2.0 A (typ.) – built-in current limiter – soft-switching outputs for low Electromagnetic Interference (EMI) • Thermal protection • Flyback diodes • Tacho output without extra sensor • Motor brake facility • Direction control input • Reset function • Transconductance amplifier for an external control transistor.