Datasheet

0 0.5 1 1.5 2 2.5 3 3.5
IC Power Dissipation - W
25
50
75
100
125
150
T - Junction Temperature - °C
J
T = Room Temperature
no airflow
A
60
65
70
75
80
85
90
95
100
0 0.5 1 1.5 2 2.5 3
LoadCurrent- A
V =10V
I
V =12V
I
V =15V
I
V =17V
I
V =8V
I
Efficiency-%
TPS54320
www.ti.com SLVS982A –AUGUST 2010–REVISED SEPTEMBER 2010
JUNCTION TEMPERATURE EFFICIENCY
vs vs
IC POWER DISSIPATION LOAD CURRENT
Figure 53. Figure 54.
Thermal Performance
Figure 55. Thermal Signature of TPS54320EVM-513 Operating at
VIN=12V,VOUT=3.3V/3A, T
A
= Room Temperature
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