TS3842B Datasheet, PDF (14/20 Pages) List of Unclassifed Manufacturers – High Performance Current Mode Controller

Undervoltage Lockout(contd.)
Figure 31-Error Amplifier Compensation
From V_O
R_i
R_d ^Cf
2(3)
R_f
2.5V
+
1.0mA _2R
EA
R
1(1)
5(9)
Error Amp compensation circuit for stabilizing any current mode topology except for boost and flyback
converters operating with continuous inductor current.
From V_O
R_p
R_i
2.5V
2(3)
+
1.0mA _2R
C_p
R_d ^Cf
R_f
EA
R
1(1)
5(9)
Figure 32-Slope Compenstaion
V_CC
V_in
7(12)
36V
8(14)
R_T
R
Bias
5.0V Ref
+
-
MPS3904
R
+
-
7(11)
Q1
From V_O
R_{slope CT 4(7)}
R_i
2(3)
R_d
C_f
R_f
Osc
+
-m
1.0mA2R
S
Q
R
EA
R _{1.0V Comp/Latch}
6(10)
5(8)
1(1)
- 3.0m
m
3(5)
R_S
5(9)
The buffered oscillator ramp can resistively summed with either the voltage feedback or current sense inputs to provide slope compensation.