UC384XA - UC284XA
Figure 23. Error Amplifier Compensation
+
1mA
R
i
2
R
d
C
f
R
f
1
5
+
-
EA
2R
From V
O
2.5V
R
Error Amp compensation circuit for stabilizing any current-mode topology except
for boost and flyback converters operating with continuous inductor current.
+
1mA
R
P
R
i
2
C
P
R
d
C
f
R
f
1
5
D95IN351
From V
O
2.5V
+
-
EA
2R
R
Error Amp compensation circuit for stabilizing current-mode boost and flyback
topologies operating with continuous inductor current.
Figure 24. External Clock Synchronization.
V
REF
8
R
BIAS
R
T
4
C
T
EXTERNAL
SYNC INPUT
0.01µF
2
1
+
-
EA
+
R
OSC
2R
47Ω
R
5
The diode clamp is required if the Sync amplitude is large enough to cause
the bottom side of C
T
to go more than 300mV below ground
D95IN352
10/16
STMICROELECTRONICS [ STMICROELECTRONICS ]
