3
dc1588af
DEMO MANUAL DC1588A
QUICK START PROCEDURE
Effi ciency vs Load Current at 3.3V
IN
,
Forced Continuous Mode
Effi ciency vs Load Current at 5V
IN
,
Forced Continuous Mode
OUTPUT CURRENT (A)
0
EFFICIENCY (%)
85
90
12
DC1588A F03a
80
75
3
6
9
15
95
2.5V
OUT
1.8V
OUT
1.5V
OUT
1.2V
OUT
1.0V
OUT
0.9V
OUT
0.8V
OUT
OUTPUT CURRENT (A)
0
EFFICIENCY (%)
85
90
12
DC1588A F03b
80
75
3
6
9
15
95
3.3V
OUT
2.5V
OUT
1.8V
OUT
1.5V
OUT
1.2V
OUT
1.0V
OUT
0.9V
OUT
0.8V
OUT
Figure 2. Measured Supply Effi ciency with Different V
IN
and V
OUT
Figure 3. Measured Load Transient Response (0A to 7A Step)
V
OUT
50mV/DIV
I
OUT
6.5A/DIV
50μs/DIV
DC1588 F04
V
IN
= 5V
V
OUT
= 1.5V
0A TO 7A LOAD STEP
C
OUT
= 4
w
100μF CERAMIC, C7 = 0.1μF
