Datasheet

cui.com
CUI Inc │ SERIES: V78-2000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 03/21/2014 │ page 5 of 6
EMC RECOMMENDED CIRCUIT
TEST CONFIGURATION
Vin
GND
2.2uF
1mH
1uF
Vin Vo
GND
1mH
330uF
Vout
GND
Efficiency and Output Voltage Ripple Test
Scope
Ceramic
3
Vin
GND
+Vout
C2
C1
25.4m
m
1
2.54 mm
DC/DC
Converter
2
25.4mm
12.7mm
1F
10 F
Tantalum
Copper strip
Copper strip
Load
Start-up and Load Transient Response Test
3
Vin
GND
+Vout
C2
C1
50.8 mm
1
2
.
5
4m
m
DC/DC
Converter
2
Scope
Copper strip
Load
Copper strip
EFFICIENCY AND RIPPLE CURVES
Efficiency Ripple
Effici ency VS. Input voltage (full load)
60
65
70
75
80
85
90
95
100
4.75 5 6 6.5 7.2 8 9 10 12 15 18 20
Input voltage(V)
Effici
en
cy
(% )
V7802-2000
V7803-2000
V7805-2000
V7806-2000
Ripple VS. Load(Vin=nominal)
2
7
12
17
22
27
32
37
200 400 600 800 1000 1200 1400 1600 1800 2000
Load(mA)
Ripple(mV)
V7802-2000
V7803-2000
V7805-2000
V7806-2000
Ripple VS. Input voltage(full load)
2
6
10
14
18
22
26
30
34
4.75 5 6 6.5 7.2 8 9 10 12 15 18 20
Input Voltage(V)
Ripple(
m
V)
V7802-2000
V7803-2000
V7805-2000
V7806-2000
Efficiency VS. Load(Vin=nominal)
50
60
70
80
90
100
200 400 600 800 1000 1200 1400 1600 1800 2000
Load(mA)
Eff
ic
ienc
y
(
%
)
V7802-2000
V7803-2000
V7805-2000
V7806-200
0
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