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