UNIVERSAL DC/DC CONVERTER
FSP34063
(2) Step-Down Converter
8
1
S
R
Q
Q2
Q1
7
2
IN5819
Ipk
Rsc
0.11
CT
Oscillator
6
3
Vin
25V
CT
470
pF
Comparator
Vcc
µF
470
1.25V
Reference
Regulator
+
100µH
-
5
4
1.0µH
Vout
5.0V/500mA
Vout
100
R2 36k
470µF
Co
R1 25k
Optional Filter
Test
Conditions
Vin=12V to 24V, IO=500mA
Vin=24V, IO=50mA to 500mA
Vin=24V, IO=500mA
Results
Line Regulation
Load Regulation
Output Ripple
Efficiency
20mV=0.2%
5mV=0.05%
160mVPP
82%
Vin=24V, IO=500mA
2007-1-25
4/10