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TDA5144T

Brushless DC motor drive circuit

Philips Electronics 

Philips Semiconductors

Brushless DC motor drive circuit

Product specification

TDA5144

Fig.2 Pin configuration (SOT163-1; SO20L).

Fig.3 Pin configuration (SOT136-1; SO28L).

FUNCTIONAL DESCRIPTION

The TDA5144 offers a sensorless three phase motor drive

function. It is unique in its combination of sensorless motor

drive and full-wave drive. The TDA5144 offers protected

outputs capable of handling high currents and can be used

with star or delta connected motors. It can easily be

adapted for different motors and applications. The

TDA5144 offers the following features:

• Sensorless commutation by using the motor EMF.

• Built-in start-up circuit.

• Optimum commutation, independent of motor type or

motor loading.

• Built-in flyback diodes.

• Three phase full-wave drive.

• High output current (2.0 A).

• Outputs protected by current limiting and thermal

protection of each output transistor.

• Low current consumption by adaptive base-drive.

• Soft-switching pulse output for low radiation.

• Accurate frequency generator (FG) by using the

motor EMF.

• Uncommitted operational transconductance amplifier

(OTA), with a high output current, for use as a control

amplifier.

June 1994

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