Datasheet

50
0 1.00.5 1.5 2.0 2.5
I
LOAD
– Load Current – A
55
65
85
70
90
75
80
h – Efficiency – %
V
IN
= 12 V
V
IN
= 14 V
V
IN
= 8 V
60
V
OUT
= 1.2 V
50
0 0.60.3 0.9 1.2 1.5
I
LOAD
– Load Current – A
55
65
95
70
100
75
90
h – Efficiency – %
60
85
80
V
IN
= 12 V
V
IN
= 14 V
V
IN
= 8 V
V
OUT
= 3.3 V
TPS54290, TPS54291, TPS54292
www.ti.com SLUS973 –OCTOBER 2009
Design Example Test Results
Figure 22. TPS54291 Design Example Switching Waveforms
Figure 23. Design Efficiency for 1.2-V Output Figure 24. Design Efficiency for 3.3-V Output
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