Linear Technology DC1516A Manual page 3

LOAD STEP TRANSIENT TESTING (OPTIONAL)
LTC3833 1.5V/15A Converter, CCM
V = 12V, f
IN
95
90
85
80
75
70
0 5
LOAD CURRENT (A)
Q = RJK0305DPB
TOP
Q = RJK0330DPB
BOTTOM
DCR SENSE VERSION (-A):
L = VISHAY IHLP4040DZ-01 0.56μH
DCR = 1.7mΩ TYP , 1.8mΩ MAX
R VERSION (-B):
SENSE
L = WURTH 7443330068 0.68μH
DCR = 1.35mΩ ±10%
R = 2.5mΩ
SENSE
Figure 2. Efficiency Curves for the DC1516A in CCM
LOAD STEP
C
OUT
= 300kHz
SW
DCR SENSE
R
SENSE
10 15 20
dc1516a F02
1.5V
O(AC)
50mV/DIV
5A/DIV
Figure 4. Load Step Response of the DC1516A-A (DCR SENSE) at V
= 2× Sanyo 2R5TPE330M9 || 2× 100μF X5R 6.3V 1206, L = 0.56μH, f
DEMO MANUAL DC1516A
LTC3833 1.5V/15A Converter, CCM and DCM
V = 12V, f
IN
100
90
DCM
80
70
60
50
40
30
20
10
0
0.01 0.10
LOAD CURRENT (A)
Q = RJK0305DPB
TOP
Q = RJK0330DPB
BOTTOM
DCR SENSE VERSION (-A):
L = VISHAY IHLP4040DZ-01 0.56μH
DCR = 1.7mΩ TYP , 1.8mΩ MAX
R VERSION (-B):
SENSE
L = WURTH 7443330068 0.68μH
DCR = 1.35mΩ ±10%
R = 2.5mΩ
SENSE
Figure 3. Efficiency Curves for the DC1516A in CCM and DCM
15A
5A
dc1516a F04
= 12V.
IN
SW
= 300kHz
SW
CCM
DCR SENSE
R
SENSE
1 10 100
dc1516a F03
123mV
= 300kHz
dc1516af
3