JVC UX-A10DVD Service Manual page 55

BA6664FM-X (IC251) : Motor driver
1. Block diagram
A3
2
A2
4
A1
7
HALL AMP
GND
8
H1+
9
H1-
10
H2+
11
H2-
12
H3+
13
H3-
14
2.Pin function
Pin No. Symbol Function
1 NC NC
2 A3 Output3 for motor
3 NC NC
4 A2 Output2 for motor
5 NC NC
6 NC NC
7 A1 Output1 for motor
8 GND GND
9 H1+ Positive input for hall input Amp1
10 H1- Negative input for hall input Amp1
11 H2+ Positive input for hall input Amp2
12 H2- Negative input for hall input Amp2
13 H3+ Positive input for hall input Amp3
14 H3- Negative input for hall input Amp3
15 VH Hall bias terminal
16 BR Brake Mode terminal
17 CNF Capacitor connection pin for
phase compensation
18 SB Short brake terminal
DRIVER
TSD
GAIN
CONTROL
CURRENT
SENSE AMP
TL
+
-
+
-
+
-
+
- R
D Q
SHORT BRAKE
CK Q
+
-
+
-
BRAKE MODE
RNF
28
VM
27
GSW
GAIN
26
SWITCH
VCC
25
VCC
FG
24
PS
23
PS
TORQUE
EC
SENSE AMP
22
+
-
ECR
21
VCC
FR
20
VCC
FG2
19
SB
18
CNF
17
BR
16
VH
15
Hall Bias
Pin No. Symbol Function
19 FG2 3Phase synthesized FG signal
output terminal
20 FR Rotation detect signal output terminal
21 ECR Torque control standard voltage input
terminal
22 EC Torque control voltage input terminal
23 PS START/STOP switch
24 FG FG signal output terminal
25 Vcc Power supply for signal division
26 GSW Gain switch
27 VM Power supply for driver division
28 RNF Resistance connection pin for output
current sense
FIN FIN GND
UX-A10DVD
1-55