
DC-DC Converter Control Circuits
Dual Output Voltage
RSC
VIN
8
SQ
R
Q2
1
Q1
2
7
IPK
Oscillator
3
6
Comparator
+
-
1.25V
Reference
Regulator
4
5
Higher Output Power, Higher Input Voltage
VIN
RSC
8
SQ
R
Q2
1
Q1
2
7
IPK
Oscillator
3
6
Comparator
+
-
1.25V
Reference
Regulator
4
5
Jan. 2011 - Rev. 1.0
- 11 -
MC34063A/B
+12V
+
GND
+
-12V
+
Isolated from input
+
+ VOUT
- VOUT
HTC