TDA5141 Datasheet, PDF (6/24 Pages) NXP Semiconductors – Brushless DC motor drive circuit

Philips Semiconductors
Brushless DC motor drive circuit
Product specification
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
V_P
V_I
V_VMOT
V_O
V_I
T_stg
T_amb
P_tot
V_es
supply voltage
input voltage; all pins except
VMOT
VMOT input voltage
output voltage
AMP OUT and PG/FG
MOT1, MOT2 and MOT3
input voltage CAP-ST, CAP-TI,
CAP-CD and CAP-DC
storage temperature
operating ambient temperature
total power dissipation
electrostatic handling
V_I < 18 V
see Figs 5 to 7
see Chapter “Handling”
MIN.
−
−0.3
−0.5
GND
−1
−
−55
0
−
−
MAX.
18
V_P + 0.5
17
UNIT
V
V
V
V_P
V
V_VMOT + V_DHF V
2.5
V
+150
°C
+70
°C
−
W
500
V
April 1994
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