a division of CUI INC
date
06/2010
page
5 of 5
SERIES:
V78XX-2000
DESCRIPTION:
DC SWITCHING REGULATOR,
NON-ISOLATED
TEST CONFIGURATION
Efficiency and Output Voltage Ripple Test
25. 4mm
25.4mm
12.7mm
Vin
1
C1
D C /D C
C onverter
2
3
C2
Copper strip
1 F
10 F
+Vout
2.54 mm
2.54 mm
Ceramic Tantalum
Scope
GND
Copper stri p
Start-up and Load Transient Response Test
50 .8 mm
Vi n
1
C1
DC /DC
Converter
2
3
C2
Copper strip
+Vo ut
Scope
GND
Copper strip
EFFICIENCY AND RIPPLE CURVES
Efficiency
Efficiency VS. Input voltage (full load)
100
95
90
85
80
75
70
65
60
4.75 5
6
6.5 7.2
8
9
10
12
15
18
20
Ripple
Ripple VS. Load(Vin=nominal)
37
32
E f fic ie n c y (% )
R ip p le ( m V )
V7802-2000
V7803-2000
V7805-2000
V7806-2000
Load
Load
27
22
17
12
7
2
200 400 600 800 1000 1200 1400 1600 1800 2000
V7802-2000
V7803-2000
V7805-2000
V7806-2000
Input voltage(V)
Load(mA)
Efficiency VS. Load(Vin=nominal)
100
90
E fficiency(% )
34
30
Ripple VS. Input voltage(full load)
R ip p le ( m V )
80
70
60
50
200 400 600 800 1000 1200 1400 1600 1800 2000
Load(mA)
V7802-2000
V7803-2000
V7805-2000
V7806-2000
26
22
18
14
10
6
2
4.75 5
6
6.5 7.2
8
9
10 12 15 18 20
V7802-2000
V7803-2000
V7805-2000
V7806-2000
Input Voltage(V)
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
www.v-infinity.com
CUI [ CUI INC ]
