Philips tda5143t DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA5143T

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 TDA5143T

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

Interference (EMI)

• Thermal protection

• Flyback diodes

GENERAL DESCRIPTION

The TDA5143T 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 as well as other applications (e.g. laser beam printer).

• 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 − 0.93 1.05 V

current limiting V

= 10 V; RO= 5.9 Ω 0.7 0.85 1.0 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

TDA5143T 20 SOL plastic SOT163-1

June 1994 2

Philips Semiconductors Product speciﬁcation

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

BBB

BBBB

BBB

BBBBBBB

B B B B B

BB BB

B B

Brushless DC motor drive circuit TDA5143T

BLOCK DIAGRAM

BBBBBB

June 1994 3

BBB

BB BB BB BB BB BB BB BB BB BB BB BB BB BB BB

Fig.1 Block diagram.

BBBBBB BBBBBB BBBBBB BBBBBB

BBBB

BBBB BBBB BBBB BBBB BBBB

Philips Semiconductors Product speciﬁcation

Brushless DC motor drive circuit TDA5143T

PINNING

SYMBOL PIN DESCRIPTION

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

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

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

9 supply voltage

Fig.2 Pin configuration.

June 1994 4

Philips Semiconductors Product speciﬁcation

Brushless DC motor drive circuit TDA5143T

FUNCTIONAL DESCRIPTION

The TDA5143T offers a sensorless three phase motor drive function. It is unique in its combination of sensorless motor drive and full-wave drive. The TDA5143T 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 TDA5143T 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.

• Three phase full-wave drive.

• High output current (0.85 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.

• Built-in flyback diodes.

LIMITING VALUES

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

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

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

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

input voltage CAP-ST, CAP-TI,

− 2.5 V

P VMOT

+ V

DHF

V V

CAP-CD and CAP-DC

stg

amb

tot

storage temperature −55 +150 °C operating ambient temperature 0 +70 °C total power dissipation see Fig.3 −− W electrostatic handling see Chapter “Handling” − 500 V

June 1994 5

Philips Semiconductors Product speciﬁcation

Brushless DC motor drive circuit TDA5143T

HANDLING

P (W)

1.38

tot

0 200

50 100 150

MBD536

T ( C)

amb

Every pin withstands the ESD test according to

“MIL-STD-883C class 2”

. Method 3015 (HBM 1500 Ω, 100 pF) 3 pulses + and 3 pulses − on each pin referenced to ground.

Fig.3 Power derating curve.

CHARACTERISTICS

= 14.5 V; T

=25°C; unless otherwise speciﬁed.

amb

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

VMOT

supply voltage note 1 4 − 18 V supply current note 2 − 4.4 5.5 mA input voltage to the output driver

see Fig.1 1.7 − 16 V

stages

Thermal protection

local temperature at temperature

130 140 150 °C

sensor causing shut-down

∆T reduction in temperature before

after shut-down − T

− 30 − K

switch-on

MOT0; centre tap

V I

V ∆V

CSW

input voltage −0.5 − V input bias current 0.5 V < VI< V

− 1.5 V −10 − 0 µA

VMOT

comparator switching level note 3 ±20 ±30 ±40 mV variation in comparator switching

−3 0 +3 mV

levels

hys

comparator input hysteresis − 75 −µV

June 1994 6

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