
DC-DC Converter Control Circuits
Dual Output Voltage
8
7
Rsc
VIN
6
5
SQ
R
1
Q2
Q1
2
Ipk Oscillator
3
comparator
1.25V
+
Reference
4
-
Regulator
Higher Output Power, Higher Input Voltage
8
1
SQ
R
2
7
VIN
Rsc
Ipk Oscillator
3
6
comparator
1.25V
+
Reference
4
-
Regulator
5
10
MC34063A
+
+12V
GND
+
-12V
+
+VOUT
Isolated from input
-VOUT
+
HTC