Philips TDA5144AT-C2 Datasheet
DATA SH EET
Product specification
Supersedes data of March 1992
File under Integrated Circuits, IC11
June 1994
INTEGRATED CIRCUITS
Philips Semiconductors
TDA5144
Brushless DC motor drive circuit
June 1994 2
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
• 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
• Tacho output without extra sensor
• Transconductance amplifier for an external control
transistor.
APPLICATIONS
• General purpose spindle driver (e.g. for hard disk)
• Laser beam printer.
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.
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
Notes
1. An unstabilized supply can be used.
2. V
VMOT
= VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA.
ORDERING INFORMATION
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
supply voltage note 1 4 − 18 V
V
VMOT
input voltage to the output
driver stages
note 2 1.7 − 16 V
V
DO
drop-out output voltage IO= 100 mA − 0.90 1.05 V
I
LIM
current limiting V
VMOT
= 10 V; RO= 1.2 Ω 1.8 2.0 2.4 A
TYPE NUMBER
PACKAGE
PINS PIN POSITION MATERIAL CODE
TDA5144AT 20 SOL plastic SOT163-1
TDA5144T 28 SOL plastic SOT136-1
June 1994 3
Philips Semiconductors Product specification
Brushless DC motor drive circuit TDA5144
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Fig.1 Block diagram (SOT163-1; SO20L).
June 1994 4
Philips Semiconductors Product specification
Brushless DC motor drive circuit TDA5144
PINNING
SYMBOL
PIN
DESCRIPTION
SO20 SO28
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
P
9 13 supply voltage
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
June 1994 5
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 6
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
V
P
supply voltage − 18 V
V
I
input voltage; all pins except
VMOT
VI< 18 V −0.3 VP + 0.5 V
V
VMOT
VMOT input voltage −0.5 17 V
V
O
output voltage
AMP OUT and FG GND V
P
V
MOT0, MOT1, MOT2 and MOT3 −1V
VMOT
+ V
DHF
V
V
I
input voltage CAP-ST, CAP-TI,
CAP-CD and CAP-DC
− 2.5 V
T
stg
storage temperature −55 +150 °C
T
amb
operating ambient temperature 0 +70 °C
P
tot
total power dissipation see Figs 4 and 5 −− W
V
es
electrostatic handling see Chapter “Handling” − 500 V
Fig.4 Power derating curve (SOT163-1; SO20L).
P
tot
(W)
50
3
2
0
0 200
MBD536
50 100 150
T ( C)
amb
o
1.38
70
1
P
tot
(W)
50
3
2
0
0 200
MBD557
50 100 150
T ( C)
amb
o
1.62
1
Fig.5 Power derating curve (SOT136-1; SO28L).
HANDLING
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.
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