Texas Instruments TPS54336AEVM-010, Руководство пользователя, Страница: 5 / 20

0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
E
ff
ici
e
n
cy
-
%
Output Current - A
C002
V
IN
= 12 V
V
IN
= 24 V
0
10
20
30
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
E
ff
ici
e
n
cy
-
%
Output Current - A
C001
V
IN
= 24 V
V
IN
= 12 V
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Test Setup and Results
5 SLVUB77 – July 2017
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Copyright © 2017, Texas Instruments Incorporated
TPS54336AEVM-010 3-A Regulator Evaluation Module
2.2 Efficiency
The efficiency of this EVM peaks at a load current of about 0.5 A – 1 A, and then decreases as the load
current increases towards full load.
Figure 1 shows the efficiency for the TPS54336AEVM-010 at an
ambient temperature of 25°C.
Figure 1. TPS54336AEVM-010 Efficiency
Figure 2 shows the efficiency for the TPS54336AEVM-010 on a semi-log scale to better show light load
efficiency. The ambient temperature is 25°C.
Figure 2. TPS54336AEVM-010 Low Current Efficiency
The efficiency may be lower at higher ambient temperatures, due to temperature variation in the drain-to-
source resistance of the internal MOSFET.