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dc1198bafa
DEMO MANUAL DC1198B-A
qUick stArt proceDUre
Figure 2. Proper Scope Probe Placement for Measuring Input or Output Ripple
Figure 3. Measured Supply Efficiency with Different V
IN
. (V
OUT
= 12V)
Figure 4. Measured Load Transient Response (2.5A Step, 25% to 75%)
LOAD CURRENT (A)
0
EFFICIENCY (%)
80
90
100
6
8
10
DC1198B F03
70
60
2
4
12
V
IN
= 5V
V
IN
= 12V
V
IN
= 20V
DC1198B F02
INPUT OR OUTPUT CAPACITOR
V
IN
= 5V, V
OUT
= 12V
CONTINUOUS CURRENT MODE (CCM)
1.25A TO 3.75A LOAD STEP
C
OUT
= 2x22µF CERAMIC (1812, X7R), 2x180µF OSCON (16V)
PEAK-TO-PEAK OUTPUT VOLTAGE DEVIATION = 413mV
200µs/DIV
V
OUT
AC-COUPLED
100mV/DIV
I
STEP
2A/DIV
DC1198B F04
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