TPS51285A
TPS51285B
SLVSBX0 –APRIL 2013
www.ti.com
TYPICAL CHARACTERISTICS (continued)
100
100
VOUT1 = 5 V
VOUT2 = 3.3 V
98
96
94
92
90
88
86
84
82
80
95
90
85
80
VVIN==77.4.4VV
VVIN==77.4.4VV
IN
IN
V
= 11.1 V
V
= 11.1 V
VIN=
V
VIN=
V
IN
IN
75
V
= 14.8 V
V
= 14.8 V
VIN=14.8V
VIN=14.8V
IN
IN
V
= 20.5 V
V
= 20.5 V
VIN=20.5V
VIN=20.5V
IN
IN
70
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
C007
C009
Output Current (A)
Output Current (A)
Figure 15. Efficiency vs. Output Current
Figure 16. Efficiency vs. Output Current
5.15
5.10
5.05
5.00
4.95
4.90
4.85
3.40
3.35
3.30
3.25
3.20
VOUT1 = 5 V
VOUT2 = 3.3 V
VIN = 7.4 V
VIN = 7.4 V
VIN = 7.4 V
VIN = 7.4 V
VVIN==11.1VV
VVIN==11.1VV
IN
IN
V
= 14.8 V
V
= 14.8 V
VIN=
V
VIN=
V
IN
IN
V
= 20.5 V
V
= 20.5 V
VIN=20.5V
VIN=20.5V
IN
IN
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
C008
C010
Output Current (A)
Output Current (A)
Figure 17. Load Regulation
Figure 18. Load Regulation
5.15
5.10
5.05
5.00
4.95
4.90
4.85
3.40
3.35
3.30
3.25
3.20
VOUT1 = 5 V
VOUT2 = 3.3 V
I
= 0A
out1 0A
I
= 0A
out1 0A
OUT2
OUT1
I
= 6A
out1 6A
I = 7A
out1 6A
OUT2
OUT1
5
10
15
20
25
5
10
15
20
25
C011
C012
Input Voltage (V)
Input Voltage (V)
Figure 19. Line Regulation
Figure 20. Line Regulation
22
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