NCP3063, NCP3063B, NCV3063
http://onsemi.com
11
Figure 19. Typical Boost Application Schematic
J104
GND
1
J103
1
C103
2.2 nF
C102
C105
C106
C101
R102
U101
NCP3063
5
36
4
8
7
1
2
COMP
TCAP
GND
N.C. SWC
SWE
R103
R101
0R15
D101
1N5819
J102
GND
1
J101
1
L101
+V
IN
= +12 V
0.1 mF
1K0 ±1%
18K0 ±1%
470 mF / 25 V
+
0.1 mF
330 mF / 50 V
+
+V
OUT
= +24 V / 350 mA
V
CC
I
PK
100 mH
Value of Components
Name Value
L101
100 mH, I
sat
> 1.5 A
D101 1 A, 40 V Schottky Rectifier
C102
470 mF, 25 V, Low ESR
C105
330 mF, 50 V, Low ESR
C103 2.2 nF Ceramic Capacitor
Name Value
R101
150 mW, 0.5 W
R102
1.00 kW
R103
18.00 kW
C101 100 nF Ceramic Capacitor
C106 100 nF Ceramic Capacitor
Test Results
Test Condition Results
Line Regulation V
in
= 9 V to 15 V, I
o
= 250 mA 2 mV
Load Regulation V
in
= 12 V, I
o
= 30 mA to 350 mA 5 mV
Output Ripple V
in
= 12 V, I
o
= 10 mA to 350 mA ≤ 350 mV
pp
Efficiency V
in
= 12 V, I
o
= 50 mA to 350 mA > 85.5%
Figure 20. Boost Demoboard Layout
Figure 21. Efficiency vs. Output Current for the Boost
Demo Board at V
in
= 12 V, V
out
= 24 V, T
A
= 255C
OUTPUT LOAD (Adc)
0 0.05 0.1 0.15 0.2 0.3 0.4
EFFICIENCY (%)
90
85
84
83
82
81
80
0.25 0.35
89
88
87
86
