Datasheet

50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
100%
0.00 0.05 0.10 0.15 0.20 0.25
OutputCurrent(I )- A
O
Efficiency-%
Vin=25V
Vin=34V
Vin=41V
2.3 Output Voltage Load Regulation
OutputCurrent(I )- A
O
OutputRegulation-%
-0.100%
-0.080%
-0.060%
-0.040%
-0.020%
0.000%
0.020%
0.040%
0.060%
0.080%
0.100%
0 0.3 0.6 0.9 1.2 1.5
Vin=25V
Vin=41VVin=34V
www.ti.com Test Setup and Results
Figure 2. TPS54140EVM-429 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.
The load regulation for the TPS54140EVM-429 is shown in Figure 3 .
Figure 3. TPS54140EVM-429 Load Regulation
Measurements are given for an ambient temperature of 25 ° C.
SLVU285 – March 2009 TPS54140EVM-429 1.5-A, SWIFT™ Regulator Evaluation Module 5
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