TDA5146T Datasheet, PDF (4/18 Pages) NXP Semiconductors – Brushless DC motor drive circuit

Philips Semiconductors
Brushless DC motor drive circuit
Product specification
TDA5146T
PINNING
Symbol
CAP–CDS
CAP–ST
CAP–TI
GND
PWMOUT
V_SUP
PWM_IN
RESET
MOT3
NC
MOT0
GND1
MOT1
TEST
NC
MOT2
VMOT
BRAKE
DIR
FG
GND2
V_P
CAP–CDM
Pin
1
2
3
4
5
6
7
8
9
10,11,12
13
14
15
16
17,18,19,20
21
22
23
24
25
26
27
28
Description
external capacitor connection for adaptive commutation delay timing copy
external capacitor connection for start–up oscillator
external capacitor connection for timing
ground supply for the FET driver stage
FET driver stage output
positive supply for the FET driver stage
FET driver stage input
reset input
driver output 3
not connected
input from the star point of the motor coils
ground (0 V) motor supply return for output stages
driver output 1
test input/output
not connected
driver output 2
input voltage for the output driver stages
brake input
direction control input
frequency generator: output of the rotation speed and position detector stages (open collector digi-
tal output, negative – going edge is valid)
ground supply return for control circuits
positive supply voltage
external capacitor connection for adaptive commutation delay timing
NOTE:
1. Pins 10,11,12,17,18,19 have to be connected to the ground for higher dissipation
CAP–CDS ¹
CAP–ST ²
CAP–TI ³
GND ⁴
PWMOUT ⁵
V_SUP ⁶
PWM_IN ⁷
RESET ⁸
MOT3 ⁹
NC ¹⁰
NC ¹¹
NC 12
MOT0 13
GND1 14
28 CAP–CDM
27 _VP
26 _GND2
25 _FG
24 _DIR
23 _BRAKE
22 _VMOT
21 _MOT2
20 _NC
19 _NC
18 _NC
17 _NC
16 _TEST
15 _MOT1
Figure 2. Pin configuration
SL01520
1994 May 18
4