SI9979_04 VISHAY [Vishay Siliconix], SI9979_04 Datasheet - Page 7

• Manufacturer Part Number: SI9979_04
• Description: 3-Phase Brushless DC Motor Controller
• Manufacturer: VISHAY [Vishay Siliconix]

Document Number: 70012
S-41209—Rev. E, 21-Jun-04
APPLICATION CIRCUITS
CLK
Commutation
Sensor
To
MC14022
CP
CP
PWM IN
FAULT
TACH
0
1
MR
GND
V+
3
0
1
2
4
7
5
6
PWM IN
1 mF
FAULT
TACH
GND
V+
R
T
C
T
1 mF
42
43
10
11
18
17
R
1
2
3
5
6
9
4
7
8
C
T
T
V+
V
IN
IN
IN
EN
F/R
BRK
60/120
TACH
QS
PWM
FAULT
R
R
GND
DD
T
T
A
B
C
/C
12−16, 21−24
37−41, 44−48
FIGURE 3. Three-Phase AC Motor Controller
T
42
43
10
18
17
11
1
2
3
5
6
9
4
7
8
Si9979
FIGURE 2. Single H-Bridge Controller
V+
V
IN
IN
IN
EN
F/R
BRK
60/120
TACH
Q
S
PWM
FAULT
R
R
GND
DD
T
T
A
B
C
12−16, 21−24
37−41, 44−48
/C
CAP
CAP
CAP
T
Si9979
GND
GB
GT
GB
GB
GT
GT
I
S
S
I
S
S
S
+
B
B
C
B
A
A
A
B
C
C
A
C
−
CAP
CAP
CAP
34
35
36
30
31
32
26
27
28
35
29
25
19
20
GND
GB
GT
GB
GT
GT
GB
I
I
S
S
S
S
S
+
B
C
B
A
A
A
B
B
C
A
C
C
−
34
35
36
30
31
32
26
27
28
35
29
25
19
20
CB
CB
C
R
A
B
CB
CB
CB
C
R
C
A
B
R
S
R
S
Q1
Q4
Q1
Q4
Q2
Q5
Q2
Q5
LITTLE FOOT
Vishay Siliconix
A
B
LITTLE FOOT
Notes:
1) If driving single phase
BLDC, tie IN
together and drive with single
hall.
2) If it is being used as an H-
bridge controller, tie IN
and IN
put to change active diagonal
pair of MOSFETs.
3) There is no TACH output
when connected in this con-
figuration.
Q3
Q6
To
Motor
Windings
C
A
B
C
To
Motor
Windings
to GND. Use F/R in-
A
www.vishay.com
Si9979
, IN
B
, and IN
A
, IN
C
B
,
7