Datasheet

Power Dissipation
2-4
2.3 Power Dissipation
The low junction-to-case thermal resistance of the PWP package, along with
a well-designed board layout, allows the SLVP213 EVMs to output full rated
load current while maintaining safe junction temperatures. For the TPS54610
with a 5-V input source and a 6-A load, the junction temperature is
approximately 60°C while the case temperature is approximately 55_C. The
total board losses at 25°C are shown in Figure 2−3. The input voltage for the
TPS54910 is 3.3 V and for the TPS54610 and TPS54810 is 5 V. Note that for
a given output current the TPS54910 dissipates less power due to the lower
drain-to-source on- resistance of the MOSFETs. For additional information on
the dissipation ratings of the devices, see the individual product data sheets.
Figure 2−3. Measured Board Losses
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
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TPS54910
TPS54610
TPS54810
POWER DISSIPATION
vs
OUTPUT CURRENT
I
O
− Output Current − A
− Power Dissipation − W
P
D