TPS51285A
TPS51285B
www.ti.com
SLVSBX0 –APRIL 2013
TYPICAL CHARACTERISTICS (continued)
600
500
400
300
200
100
0
600
VIINN=77..44VV
= 12 V
VIINN=77..44VV
V
V
= 12 V
VIINN=12V
VIINN=12V
500
400
300
200
100
0
V
= 20 V
IN 20V
IN
V
= 20 V
IN 20V
IN
VOUT1 = 5 V
VOUT2 = 3.3 V
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
C015
C016
Output Current (A)
Output Current (A)
Figure 21. Switching Frequency vs. Output Current
Figure 22. Switching Frequency vs. Output Current
600
500
400
300
200
100
0
600
500
400
300
200
100
0
VOUT1 = 5 V
IOUT1 = 6 A
VOUT2 = 3.3 V
IOUT2 = 7 A
5
10
15
20
25
5
10
15
20
25
C013
C014
Input Voltage (V)
Input Voltage (V)
Figure 23. Switching Frequency vs. Input Voltage
Figure 24. Switching Frequency vs. Input Voltage
V
= 7.4V
V
I
= 7.4V
IN
IN
I
(0.7 <-> 6.3A, 0.5A/ms)
(0.6 <-> 5.4A, 0.5A/ms)
OUT2
OUT1
V
OUT1
(100mV/div)
V
OUT2
(100mV/div)
I
(2A/div)
OUT1
I
(2A/div)
100 ms/div
OUT2
100 ms/div
Figure 25. Load Transient
Figure 26. Load Transient
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