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
V
P
V
VMOT
supply voltage note 1 4 − 18 V
input voltage to the output
note 2 1.7 − 16 V
driver stages
V
I
DO
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
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Brushless DC motor drive circuit TDA5143T
BLOCK DIAGRAM
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June 1994 3
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Fig.1 Block diagram.
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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
P
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
V
P
V
I
supply voltage − 18 V
input voltage; all pins except
VI< 18 V −0.3 VP + 0.5 V
VMOT
V
VMOT
V
O
V
I
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
T
stg
T
amb
P
tot
V
es
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
3
tot
2
1
0
50
0 200
50 100 150
70
MBD536
o
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
V
= 14.5 V; T
P
=25°C; unless otherwise specified.
amb
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
V
P
I
P
V
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
T
SD
local temperature at temperature
130 140 150 °C
sensor causing shut-down
∆T reduction in temperature before
after shut-down − T
− 30 − K
SD
switch-on
MOT0; centre tap
V
I
I
V
∆V
I
CSW
CSW
input voltage −0.5 − V
input bias current 0.5 V < VI< V
− 1.5 V −10 − 0 µA
VMOT
VMOT
V
comparator switching level note 3 ±20 ±30 ±40 mV
variation in comparator switching
−3 0 +3 mV
levels
V
hys
comparator input hysteresis − 75 −µV
June 1994 6
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