MC34060A MC33060A
Figure 15. Error Amplifier Sensing Techniques
V
O
To Output
Voltage of
System
V
ref
R
R
1
1
2
1
2
+
–
+
R
2
1
3
3
V
–
ref
Error
Amp
Error
Amp
2
R
Positive Output Voltage
Negative Output Voltage
To Output
Voltage of
System
R
R
R
R
1
2
1
2
V
= V (1 +
ref
)
V
= –V (1 +
ref
)
O
O
V
O
Figure 16. Deadtime Control Circuit
Figure 17. Soft–Start Circuit
+
–
R
R
V
1
C
S
ref
R
R
1
V
ref
4
4
Q
D
T
Output
D
Output
Q
T
R
C
T
5
T
2
6
2
160
47k
0.001
R
Max % On Time
≈
92 –
1
2
1 +
R
Figure 18. Slaving Two or More Control Circuits
V
ref
6
5
R
C
T
Master
T
C
T
R
T
V
ref
6
5
R
C
T
(Additional
Circuits)
Slave
T
8
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
