Datasheet

0
10
20
30
40
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
Efficiency (%)
V
IN
= 3.3 V
V
IN
= 5 V
G001
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1
Output Current (A)
Efficiency (%)
V
IN
= 3.3 V
V
IN
= 5 V
G002
www.ti.com Test Setup and Results
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 TPS54519EVM-037 at an
ambient temperature of 25°C.
Figure 1. TPS54519EVM-037 Efficiency
Figure 2 shows the efficiency for the TPS54519EVM-037 at lower output currents between 0.02 A and
0.20 A at an ambient temperature of 25°C.
Figure 2. TPS54519EVM-037 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.
5
SLVU523–September 2011 TPS54519EVM-037, 5-A, SWIFT™ Regulator— Evaluation Module
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