Datasheet

EFFICIENCY
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
Output Current - A
Efficiency - %
Vin = 3.3 V
Vin = 5 V
LOAD REGULATION
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0 0.5 1 1.5 2 2.5 3
Output Current - A
Output Voltage Deviation - %
Vin = 3.3 V
Vin = 5 V
www.ti.com Test Setup and Results
Figure 2 shows the efficiency for the TPS54319EVM-626 at lower output currents between 0.001 A and 3
A at an ambient temperature of 25°C.
Figure 2. TPS54319EVM-626 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.
2.3 Output Voltage Load Regulation
The load regulation for the TPS54319EVM-626 is shown in Figure 3.
Figure 3. TPS54319EVM-626 Load Regulation
Measurements are given for an ambient temperature of 25°C.
5
SLVU377–May 2010 TPS54319EVM-626 3-A, SWIFT™ Regulator Evaluation Module
Copyright © 2010, Texas Instruments Incorporated