FUJITSU MB3788 - Manual (Page 18)

MB3788
18
■ ■ ■ ■ APPLICATION CIRCUIT
+15 V
+24 V
DC motor 1
DC motor 2
24
150 Ω
23
20
21
22
1000 pF
Channel 1
(dB)
(b)
22
µ
H 3 V
10 µ F
Ca2
Cb2
OUT2
VE2
150 Ω
1000 pF
+
(a)
22
µ
H 5 V
10
µ
F
Ca1
V CC (out)
OUT1
VE1
2
3
5
1
4 Cb1
(15 mA)
Channel 2
(deg)
10
µ
H
+
-
33 µ F
+
-
33 µ F
V CC
11
6
9
7
8
-IN1 (E)
FB1
-IN1 (C)
+IN1 (E)
V CC
14
CTL2
13
CTL1
(a)
4.7 k
Ω
4.7 k Ω
8.2 k Ω
2.7 k
Ω
100 k Ω
19
16
18
17
-IN2 (E)
FB2
-IN2 (C)
+IN2 (E)
(b)
4.7 k Ω
4.7 k Ω
3.8 k
Ω
2.7 k Ω
100 k
Ω
15 10 12
GND -IN(PWM) SCP V REF
⇑
Triangular wave signal
1.9 V
1.3 V
C T
-
+
-
0.1 µ F
0.22
µ
F
0.22
µ
F