Datasheet

0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
h
-Efficiency-%
V =8V
I
V =12V
I
V =20V
I
V =8V
I
V =12V
I
V =20V
I
PWMOnly
f =350kHz
sw
AutoSkip
I -OutputCurrent- A
O
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
h
-Efficiency-%
V =20V
I
V =8V
I
V =12V
I
V =20V
I
V = 8 V
I
V =12V
I
PWMOnly
f =300kHz
sw
I -OutputCurrent- A
O
t-Time-10 s/divm
I (5 A/div)
IND
I (5 A/div)
O
V (50mV/div)
O
t-Time-10 s/divm
V (50mV/div)
O
I (5 A/div)
IND
I (5 A/div)
O
TPS51117
www.ti.com ...................................................................................................................................... SLVS631B –DECEMBER 2005–REVISED SEPTEMBER 2009
TYPICAL CHARACTERISTICS (continued)
1.05 V EFFICIENCY 2.5 V EFFICIENCY
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 15. Figure 16.
1.05 V LOAD TRANSIENT RESPONSE 2.5 V LOAD TRANSIENT RESPONSE
Figure 17. Figure 18.
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