Philips TDF5140A Datasheet
INTEGRATED CIRCUITS
TDF5140A
Brushless DC motor drive circuit
Product specification 1999 March 15
Philips Semiconductors Product specification
Brushless DC motor drive circuit TDF5140A
FEATURES
• Full-wave commutation (using push/pull drivers at the
output stages) without position sensors
• Built-in start-up circuitry
• Three push-pull outputs:
– 0.8 A output current (typ.)
APPLICATIONS
• VCR
• Laser beam printer
• Fax machine
• Blower
• Automotive.
– low saturation voltage
– built-in current limiter
• Thermal protection
• Flyback diodes
• Tacho output without extra sensor
• Position pulse stage for phase-locked-loop control
GENERAL DESCRIPTION
The TDF5140A 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.
• 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
V
P
VMOT
supply voltage note 1 4 − 18 V
input voltage to the output
note 2 1.7 − 20 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= 3.9 Ω 0.7 0.8 1 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
EXTENDED TYPE NUMBER
PINS PIN POSITION MATERIAL CODE
TDF5140A 18 DIL plastic SOT102
1999 March 15 2
Philips Semiconductors Product specification
Brushless DC motor drive circuit TDF5140A
BLOCK DIAGRAM
−AMP IN
+AMP IN
CAP-ST
CAP-DC
CAP-CD
TEST
CAP-TI
PG/FG
13
14
11
10
9
2
PROTECTION
12
6
THERMAL
ROTATION
POSITION
SPEED
&
DETECTOR
OUTPUT
STAGE
AMP OUT
15
CONDUCTANCE
AMPLIFIER
START-UP
OSCILLATOR
ADAPTIVE
COMMUTATION
DELAY
TIMING
DIVIDE
POSITION
DETECTOR
STAGE
TRANS-
BY 2
COMMUTATION
LOGIC
VMOT
4
PUSH/PULL
FLYBACK
D
H
OUTPUT
D
L
DRIVER
STAGE 1
OUTPUT DRIVER
STAGE 2
OUTPUT DRIVER
STAGE 3
1
MOT1
3
MOT2
16
MOT3
TDF5140A
57 8
PGIN GND218GND1 V
Fig.1 Block diagram
1999 March 15 3
P
EMF COMPARATORS
17
MGH313
MOT0
Philips Semiconductors Product specification
Brushless DC motor drive circuit TDF5140A
PINNING
SYMBOL
MOT1 1 driver output 1
TEST 2 test input/output
MOT2 3 driver output 2
VMOT 4 input voltage for the output driver stages
PG IN 5 position generator: input from the position detector sensor to the position
PG/FG 6 position generator/frequency generator: output of the rotation speed and position
GND2 7 ground supply return for control circuits
V
P
CAP-CD 9 external capacitor connection for adaptive communication delay timing
CAP-DC 10 external capacitor connection for adaptive communication delay timing copy
CAP-ST 11 external capacitor connection for start-up oscillator
CAP-TI 12 external capacitor connection for timing
+AMP IN 13 non-inverting input of the transconductance amplifier
−AMP IN 14 inverting input of the transconductance amplifier
AMP OUT 15 transconductance amplifier output (open collector)
MOT3 16 driver output 3
MOT0 17 input from the star point of the motor coils
GND1 18 ground (0 V) motor supply return for output stages
PIN
DIL18
detector stage (optional); only if an external position coil is used
detector stages (open collector digital output, negative-going edge is valid)
8 positive supply voltage
DESCRIPTION
1999 March 15 4
Philips Semiconductors Product specification
Brushless DC motor drive circuit TDF5140A
MOT1
TEST
MOT2
VMOT
PG IN
PG/FG
GND2
Vp
CAP-CD
1
2
3
4
5
TDF5140A
6
7
8
9
MGH311
Fig.2 Pin configuration
18
17
16
15
14
13
12
11
10
+AMP IN
CAP-TI
GND1
MOT0
MOT3
AMP OUT
-AMP IN
CAP-ST
CAP-DC
FUNCTIONAL DESCRIPTION
The TDF5140A offers a sensorless three phase motor drive function. It is unique in its combination of sensorless motor
drive and full-wave drive. The TDF5140A 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 TDF5140A 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 (0.8 A).
• Outputs protected by current limiting and thermal protection of each output transistor.
• Low current consumption by adaptive base-drive.
• Accurate frequency generator (FG) by using the motor EMF.
• Amplifier for external position generator (PG) signal.
• Suitable for use with a wide tolerance, external PG sensor.
• Built-in multiplexer that combines the internal FG and external PG signals on one pin for easy use with a controlling
microprocessor.
• Uncommitted operational transconductance amplifier (OTA), with a high output current, for use as a control amplifier.
1999 March 15 5
Philips Semiconductors Product specification
Brushless DC motor drive circuit TDF5140A
amb
MBD535
o
2.80
P
(W)
tot
2.28
1.05
3
2
0
50
0 200
30
50 100 150
70
T ( C)
Fig.3 Power derating curve (SOT102; DIL18).
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
V
V
VMOT
O
I
VMOT input voltage −0.5 20 V
output voltage
AMP OUT and PG/FG GND V
MOT1, MOT2 and MOT3 −1V
input voltage CAP-ST, CAP-TI,
− 2.5 V
P
VMOT
+ V
DHF
CAP-CD and CAP-DC
T
stg
T
amb
P
tot
V
es
storage temperature −55 +150 °C
operating ambient temperature −30 +70 °C
total power dissipation see Fig. 3 −− W
electrostatic handling see “Handling” − 500 V
V
V
HANDLING
Every pin withstands the ESD test in accordance with
“MIL-STD-883C class 2”
3 pulses + and 3 pulses − on each pin referenced to ground.
1999 March 15 6
. Method 3015 (HBM 1500 Ω, 100 pF)
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