Texas Instruments TPS54231, User Manual

Page: 5 / 21

0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20
Output Current (I ) - A
O
Ef
ficiency-%
V = 15 V
IN
V = 7 V
IN
V = 28 V
IN
V = 24 V
IN
Figure 2-2. TPS54231EVM-372 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 TPS54231EVM-372 is shown in Figure 2-3 .
-0.10%
-0.05%
0.00%
0.05%
0.10%
0.15%
0.20%
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
Output Current (A)
O
u
tp
u
t
R
e
g
u
la
ti
o
n
(%
)
Output Current (I ) - A
O
O
u
tpu
tR
e
g
u
la
tio
n
-%
V = 7 V
IN
V = 15 V
IN
V = 24 V
IN
V = 28 V
IN
Figure 2-3. TPS54231EVM-372 Load Regulation
Measurements are given for an ambient temperature of 25°C.
www.ti.com Test Setup and Results
SLVU263A – AUGUST 2008 – REVISED OCTOBER 2021
Submit Document Feedback
TPS54231 Step-Down Converter Evaluation Module User's Guide 5
Copyright © 2021 Texas Instruments Incorporated