Pioneer DV-545 Service Manual page 78

DV-545, DV-444-S, DV-444-K
BA6664FM (DVDM ASSY : IC251)
• Three-phase Motor Driver
•
Block Diagram
A3 2
A2 4
A1 7
GND 8
H1+ 9
H1- 10
H2+ 11
H2- 12
H3+ 13
H3- 14
•
Block Diagram
No. Pin Name
1 N.C. N.C.
2 A3 Output pin
3 N.C. N.C.
4 A2 Output pin
5 N.C. N.C.
6 N.C. N.C.
7 A1 Output pin
8 GND GND pin
9 H1+
10 H1-
11 H2+
Hall signal input pins
12 H2-
13 H3+
14 H3-
15 VH Hall bias pin
78
DRIVER
GAIN
CONTROL
CURRENT
SENSE AMP
T
L
HALL AMP
D
CK
Pin Function
TSD
GAIN
SWITCH
Vcc
TORQUE
PS
SENSE AMP
Vcc
Vcc
R
Q
SHORT BRAKE
Q
BRAKE MODE
HALL BIAS
No. Pin Name
16 BR Brake mode switching pin
17 CNF Capacitor connection pin for phase compensation
18 SB Short brake pin
19 FG2 FG 3-phase mix signal output pin
20 FR Rotation detecting pin
21 ECR Control reference pin of output voltage
22 EC Output voltage control pin
23 PS Power save pin
24 FG FG signal output pin
25 VCC Power supply pin
26 GSW Gain switching pin
27 VM Motor power pin
28 RNF Resistor connection pin for output current detection
FIN FIN GND
28 RNF
27
VM
26
GSW
25 VCC
24
FG
23
PS
22 EC
21
ECR
20 FR
19
FG2
18
SB
17 CNF
16
BR
15 VH
Pin Function