4
dc2268abfa
DEMO MANUAL DC2268A-B
dc2268ab F05
3.3V OUTPUT (20MHz BW) [20mV/DIV]
6.5A TO 13A LOAD STEP
Quick start proceDure
Figure 3. Measured Efficiency on Channel 1
(V
OUT1
= 3.3V, f
SW
= 750kHz, Channel 2 Disabled)
Efficiency, 3.3V
Efficiency, 5V
Figure 4. Measured Efficiency on Channel 2
(V
OUT2
= 5V, f
SW
= 750kHz, Channel 1 Disabled)
I
LOAD
(A)
0
EFFICICENCY (%)
100
95
90
85
80
75
8
4
12
dc2268ab F03
13
6
2
10
7
3
11
5
1
9
V
IN
= 12V
f
SW
= 750kHz
89.1
75.2
84.6
87.5
90.4
91.1 91.8
91.6
92
92 92
91.9
91.8
0
100
95
90
85
80
75
8
4
12 13
6
2
10
7
3
11
5
1
9
91.4
77.4
93.9
90.2
92.4
93.7
93.5
94
87
94
93
94
93.9
I
LOAD
(A)
EFFICICENCY (%)
dc2268ab F04
V
IN
= 12V
f
SW
= 750kHz
Figure 5. Measured Channel 6.5A to 13A Load Transient (V
IN
= 12V, V
OUT1
= 3.3V)
