Datasheet

( ) ( )
= - ´
TH TOT
A max J max
T T R P
TPS54160 , TPS54160A
www.ti.com SLVSB56C –MAY 2012–REVISED FEBRUARY 2014
where
• P
TOT
s the total device power dissipation (W)
• T
A
is the ambient temperature (°C)
• T
J
is the junction temperature (°C)
• R
TH
is the thermal resistance of the package (°C/W)
• T
J(max)
is maximum junction temperature (°C)
• T
A(max)
is maximum ambient temperature (°C). (60)
There are additional power losses in the regulator circuit due to the inductor ac and dc losses, the catch diode
and trace resistance that will impact the overall efficiency of the regulator.
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