VREF
RT /CT
ISENSE
VREF
8
4
8
RT
RT
RT /CT
4
RSLOPE
IS
MIK3842
RSLOPE
MIK3842
IS
R1
R1
ISENSE
3
3
5
5
RS
RS
GND
GND
Figure 4. Slope Compensation Techniques
SCR must be selected for a holding current of less than 0.5mA.
The simple two transistor circuit can be used in place of the SCR as shown.
Figure 5. Latched Shutdown
From V0
From V0
RI
+
+
1mA
2.5 V
2.5 V
+
Rp
1mA
2R
2R
+
RI
VFB
VFB
-
-
EA
2
EA
2
Cp
Cf
Rd
Rf
Cf
R
R
1
1
COMP
COMP
5
5
Error Amp compensation circuit for stabilizing any current-mode topology except for
boost and flyback converters operating with continuous inductor current.
Error Amp compensation circuit for stabilizing current-mode boost and flyback
topologies operating with continuous inductor current.
Figure 6. Error Amplifier Compensation
BEIJING ESTEK ELECTRONICS CO.,LTD
4
ESTEK [ Estek Electronics Co. Ltd ]
