NCV3843BV ON Semiconductor, NCV3843BV Datasheet - Page 15

• Manufacturer Part Number: NCV3843BV
• Description: High Performance Current Mode Controllers
• Manufacturer: ON Semiconductor

From V
O
R
R
MPS3904
i
d
R
Slope
UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV
C
f
C
T
R
8(14)
4(7)
2(3)
1(1)
The buffered oscillator ramp can be resistively summed with either the voltage
feedback or current sense inputs to provide slope compensation.
T
R
Error Amp compensation circuit for stabilizing any current mode topology except for boost and flyback
converters operating with continuous inductor current.
f
C
Figure 32. Error Amplifier Compensation
From V
R
p
Error Amp compensation circuit for stabilizing current mode boost and flyback
topologies operating with continuous inductor current.
p
O
EA
− 3.0m
Figure 33. Slope Compensation
R
R
R
From V
R
i
R
R
d
d
i
R
+
f
≥ 8.8 k
Osc
O
1.0mA
Bias
C
C
http://onsemi.com
f
f
2R
1(1)
1(1)
R
2(3)
2(3)
R
R
f
f
−
+
5(9)
15
1.0V
2.5V
2.5V
−m
5.0V Ref
EA
EA
m
Comp/Latch
+
+
S
R
1.0mA
1.0mA
Q
2R
2R
R
R
+
−
5(9)
5(9)
7(12)
36V
7(11)
6(10)
5(8)
3(5)
V
CC
R
V
S
in