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TDA5141A Fiches technique(PDF) 6 Page - NXP Semiconductors

No de pièce TDA5141A
Description  Brushless DC motor drive circuit
Download  24 Pages
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

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April 1994
6
Philips Semiconductors
Product specification
Brushless DC motor drive circuit
TDA5141
FUNCTIONAL DESCRIPTION
The TDA5141 offers a sensorless three phase motor drive function. It is unique in its combination of sensorless motor
drive and full-wave drive. The TDA5141 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 TDA5141 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 (1.9 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.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VP
supply voltage
18
V
VI
input voltage; all pins except
VMOT
VI < 18 V
−0.3
VP + 0.5
V
VVMOT
VMOT input voltage
−0.5
17
V
VO
output voltage
AMP OUT and PG/FG
GND
VP
V
MOT1, MOT2 and MOT3
−1VVMOT + VDHF V
VI
input voltage CAP-ST, CAP-TI,
CAP-CD and CAP-DC
2.5
V
Tstg
storage temperature
−55
+150
°C
Tamb
operating ambient temperature
0
+70
°C
Ptot
total power dissipation
see Figs 5 to 7
−−
W
Ves
electrostatic handling
see Chapter “Handling”
500
V


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