TDA5145TS Datasheet, PDF (4/20 Pages) NXP Semiconductors – Brushless DC motor drive circuit

Philips Semiconductors
Brushless DC motor drive circuit
Product specification
TDA5145TS
PINNING
SYMBOL PIN
DESCRIPTION
MOT1
1 driver output 1
MOT1
2 driver output 1
TEST
3 test input/output
MOT2
4 driver output 2
MOT2
5 driver output 2
VMOT
6 input voltage for the output driver
stages
VMOT
7 input voltage for the output driver
stages
BRAKE
8 brake input; this pin may not be left
floating, a LOW-level voltage must
be applied to disable this function
DIR
9 direction control input; this pin may
not be left floating
GND2
10 ground supply return for control
circuits
V_P
CAP-CD
11 supply voltage
12 external capacitor connection for
adaptive communication delay
timing
CAP-DC
13 external capacitor connection for
adaptive communication delay
timing copy
CAP-ST
14 external capacitor connection for
start-up oscillator
CAP-TI
15 external capacitor connection for
timing
n.c.
16 not connected
n.c.
17 not connected
RESET
18 reset input; this pin may not be left
floating, a LOW-level voltage must
be applied to disable this function
n.c.
19 not connected
MOT3
20 driver output 3
MOT3
21 driver output 3
MOT0
22 input from the star point of the motor
coils
GND1
23 ground (0 V) motor supply return for
output stages
GND1
24 ground (0 V) motor supply return for
output stages
handbook, halfpage
MOT1 1
24 GND1
MOT1 2
23 GND1
TEST 3
22 MOT0
MOT2 4
21 MOT3
MOT2 5
20 MOT3
VMOT 6
19 n.c.
TDA5145TS
VMOT 7
18 RESET
BRAKE 8
17 n.c.
DIR 9
16 n.c.
GND2 10
15 CAP-TI
VP 11
CAP-CD 12
14 CAP-ST
13 CAP-DC
MGR392
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
The TDA5145TS offers a sensorless 3-phase motor drive
function. It is unique in its combination of sensorless motor
drive and full-wave drive. The TDA5145TS 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 TDA5145TS 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
• Direction of rotation controlled by one pin
• Brake function.
1998 Oct 27
4