Philips tda5144t DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA5144

Brushless DC motor drive circuit

Product speciﬁcation Supersedes data of March 1992 File under Integrated Circuits, IC11

Philips Semiconductors

June 1994

Philips Semiconductors Product speciﬁcation

Brushless DC motor drive circuit TDA5144

FEATURES

• Full-wave commutation (using push/pull drivers at the output stages) without position sensors

APPLICATIONS

• General purpose spindle driver (e.g. for hard disk)

• Laser beam printer.

• Built-in start-up circuitry

• Three push-pull outputs:

– output current 2.0 A (typ.) – low saturation voltage – built-in current limiter – soft-switching outputs for low Electromagnetic

Interference (EMI)

• Thermal protection

• Flyback diodes

GENERAL DESCRIPTION

The TDA5144 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. A special circuit is built-in to reduce the EMI (soft switching output stages). It is ideally suited as a drive circuit for hard disk drive spindle motor requiring powerful output stages (current limit of 2.0 A). It can also be used in e.g. laser beam printer and other applications.

• Tacho output without extra sensor

• Transconductance amplifier for an external control

transistor.

QUICK REFERENCE DATA

Measured over full voltage and temperature range.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

VMOT

supply voltage note 1 4 − 18 V input voltage to the output

note 2 1.7 − 16 V

driver stages V I

LIM

drop-out output voltage IO= 100 mA − 0.90 1.05 V

current limiting V

= 10 V; RO= 1.2 Ω 1.8 2.0 2.4 A

VMOT

Notes

1. An unstabilized supply can be used.

2. V

= VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA.

VMOT

ORDERING INFORMATION

PACKAGE

TYPE NUMBER

PINS PIN POSITION MATERIAL CODE

TDA5144AT 20 SOL plastic SOT163-1 TDA5144T 28 SOL plastic SOT136-1

June 1994 2

Philips Semiconductors Product speciﬁcation

B B B B B B B B B B B B B B B

BBBB

BBB

BBBB

BBBBBBB

B B B B B B

BB BB

B B

B B B B

Brushless DC motor drive circuit TDA5144

BLOCK DIAGRAM

BBBBBB

June 1994 3

BBB

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BBBBB BBB

Fig.1 Block diagram (SOT163-1; SO20L).

BBBB BBBB BBBB BBBB BBBB BBBB

Philips Semiconductors Product speciﬁcation

Brushless DC motor drive circuit TDA5144

PINNING

SYMBOL

MOT1 1 1 and 2 driver output 1 TEST 2 3 test input/output n.c. 3 4 not connected MOT2 4 5 and 6 driver output 2 n.c. − 7 not connected VMOT 5 8 and 9 input voltage for the output driver stages GND3 6 10 ground supply; must be connected FG 7 1 1 frequency generator: output of the rotation speed (open collector digital output) GND2 8 12 ground supply return for control circuits V

CAP-CD 10 14 external capacitor connection for adaptive communication delay timing CAP-DC 11 15 external capacitor connection for adaptive communication delay timing copy CAP-ST 12 16 external capacitor connection for start-up oscillator CAP-TI 13 17 external capacitor connection for timing +AMP IN 14 18 non-inverting input of the transconductance ampliﬁer

−AMP IN 15 19 inverting input of the transconductance ampliﬁer AMP OUT 16 20 transconductance ampliﬁer output (open collector) n.c. − 21 and 22 not connected MOT3 17 23 and 24 driver output 3 n.c. 18 25 not connected MOT0 19 26 input from the star point of the motor coils GND1 20 27 and 28 ground (0 V) motor supply return for output stages

SO20 SO28

DESCRIPTION

9 13 supply voltage

June 1994 4

Philips Semiconductors Product speciﬁcation

Brushless DC motor drive circuit 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 5

Philips Semiconductors Product speciﬁcation

Brushless DC motor drive circuit TDA5144

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

VMOT

stg

amb

tot

supply voltage − 18 V input voltage; all pins except

VI< 18 V −0.3 VP + 0.5 V

VMOT VMOT input voltage −0.5 17 V output voltage

DHF

V V

AMP OUT and FG GND V MOT0, MOT1, MOT2 and MOT3 −1V

input voltage CAP-ST, CAP-TI,

− 2.5 V

P VMOT

+ V

CAP-CD and CAP-DC storage temperature −55 +150 °C operating ambient temperature 0 +70 °C total power dissipation see Figs 4 and 5 −− W electrostatic handling see Chapter “Handling” − 500 V

MBD536

T ( C)

amb

P (W)

1.38

tot

0 200

50 100 150

Fig.4 Power derating curve (SOT163-1; SO20L).

MBD557

T ( C)

amb

P (W)

1.62

tot

0 200

50 100 150

Fig.5 Power derating curve (SOT136-1; SO28L).

HANDLING

Every pin withstands the ESD test according to and 3 pulses − on each pin referenced to ground.

June 1994 6

“MIL-STD-883C class 2”

. Method 3015 (HBM 1500 Ω, 100 pF) 3 pulses +

+ 12 hidden pages