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)

G001

0

10

20

30

40

50

60

70

80

90

100

0.001

0.01

0.1

1

Output Current (A)

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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© 2011, Texas Instruments Incorporated