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PDF TDF5140A Data sheet ( Hoja de datos )
| Número de pieza | TDF5140A | |
| Descripción | Brushless DC motor drive circuit | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
TDF5140A
Brushless DC motor drive circuit
Product specification
1999 March 15
Philips
Semiconductors
1 page  
Philips Semiconductors
Brushless DC motor drive circuit
Product specification
TDF5140A
MOT1 1
18 GND1
TEST 2
17 MOT0
MOT2 3
16 MOT3
VMOT 4
15 AMP OUT
PG IN 5 TDF5140A 14 -AMP IN
PG/FG 6
13 +AMP IN
GND2 7
12 CAP-TI
Vp 8
11 CAP-ST
CAP-CD 9
10 CAP-DC
MGH311
Fig.2 Pin configuration
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
5 Page 
Philips Semiconductors
Brushless DC motor drive circuit
Product specification
TDF5140A
handbook, full pagewidth
+14 V
BD434
680 Ω
39 kΩ
10 kΩ
47 nF
470 Ω
120 Ω
47 nF
1 µF
15 13
4 18
from
DAC
47 kΩ
14
220 nF
11
START-UP
OSCILLATOR
18 nF
18 nF
10
9
ADAPTIVE
COMMUTATION
DELAY
TEST
10 nF
2 THERMAL
PROTECTION
12
FG to
micro-
processor
4.7
kΩ
+5 V
6
ROTATION
SPEED/
DETECTOR
OUTPUT
STAGE
TIMING
DIVIDE
BY 2
POSITION
DETECTOR
STAGE
8
VP
COMMUTATION
LOGIC
TP
D
TN
D
TN
TP
D
TN
D
TN
TP
D
TN
D
TN
1
3
16
SCANNER
MOTOR
POSITION
COIL
GND2
GND1
TDF5140A
75
EMF COMPARATORS
17
MBK986
Fig.5 Typical application of the TDF5140A as a scanner driver, with use of OTA.
1999 March 15
11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet TDF5140A.PDF ] | |
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