Linear Technology DC1668A-A Demo Manual page 4

DEMO MANUAL DC1668A-A
QUICK START PROCEDURE
95
90
85
80
75
70
0 5 10
LOAD CURRENT (A)
Figure 2. Measured Efficiency at 12V
V
OUT
100mV/DIV
I STEP
OUT
10A/DIV
Figure 4. Measured Load Step Response
4
3.3V
OUT
2.5V
OUT
1.8V
OUT
1.5V
OUT
1.2V
OUT
1V
OUT
15 20 25 30
1668 F02
, 500kHz
IN
V = 1.8V
OUT
I DC = 15A
OUT
I STEP = 15A
OUT
f = 500kHz
SW
1668 F04
Figure 3. Thermal Capture at 12V
No Forced Airflow (Convection). T
V
OUT
50mV/DIV
Figure 5. Measured Output Voltage Ripple (20MHz BW)
, 1.8V , 30A, 500kHz
IN OUT
= 29°C
A
V = 1.8V
OUT
I = 30A
OUT
f = 500kHz
SW
1668 F05
dc1668aaf