Datasheet

PERFORMANCE GRAPHS
35
41
47
53
59
65
71
77
83
89
95
Efficiency − %
I
O
− OutputCurrent − A
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
V =6V
I
V =5V
I
V =3V
I
V =3.3V
I
f =1600kHz
s
V =1.8V
O
I − OutputCurrent − A
O
-0.4
-0.35
-0.3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0 1 2 3 4 5 6
PercentDeviation-%
V =3V
I
V =5V
I
V =3.3V
I
f =1600kHz
T =25 C
V =1.8V
s
A
O
o
V =6V
I
V − InputVoltage − V
I
-0.3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
3 3.5 4 4.5 5 5.5 6
PercentDeviation-%
I =0 A
O
I =3 A
O
I =6 A
O
f =1600kHz
T =25 C
V =1.8V
s
A
O
o
t − Time − 1 s/divm
OutputRippleV
oltage − 10mV/div
V =5V
I
V =1.8V
O
f =1600kHz
V =6 A
s
O
t − Time − 5 s/divm
V
OutputV
O
− oltage − 10mV/div
V =5V
I
V =1.8V
O
25
50
75
100
125
0 1 2 3 4 5 6 7 8
AmbientTemperature- C
o
I − OutputCurrent − A
O
V =3.3V
I
f =1600kHz
s
T =125°C
j
V =1.8V
O
t − Time − 5ms/div
V putV
I
−
In
oltage − 1mV/div
V putV
O
− Out oltage − 1mV/div
V =5V
I
V =1.8V
O
0.047 F
Slow-StartCapacitor
m
t − Time − 1 s/divm
InputRippleVoltage − 10mV/div
V =5V
I
V =1.8V
O
f =1600kHz
V =6 A
s
O
-60dB
-40dB
-30dB
-20dB
-10dB
0dB
10dB
20dB
30dB
60dB
-180deg
-120deg
-90deg
-60deg
-30deg
0deg
30deg
60deg
90deg
120deg
180deg
1-Gain
1-Phase
Frequency
100kHz
Phase
1M
40dB
50dB
-50dB
100Hz 1kHz 10kHz
Gain
150deg
-150deg
TPS54617
www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009
EFFICIENCY LOAD REGULATION LINE REGULATION
vs vs vs
OUTPUT CURRENT OUTPUT CURRENT INPUT VOLTAGE
Figure 12. Figure 13. Figure 14.
AMBIENT TEMPERATURE
vs
LOAD CURRENT
(1)
OUTPUT RIPPLE VOLTAGE TRANSIENT RESPONSE
Figure 15. Figure 16. Figure 17.
SLOW-START TIMING INPUT RIPPLE VOLTAGE CLOSED LOOP RESPONSE
Figure 18. Figure 19. Figure 20.
(1)
Safe operating area is applicable to the test board conditions listed in the dissipation rating table section of this
data sheet.
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