Texas Instruments TPS54325, Руководство пользователя

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2.3 Efficiency
Figure 2-2 shows the efficiency for the TPS54325EVM at an ambient temperature of 25°C. The EVM was
modified for operation at 3.3-, 2.5- and 1.8-V output using the R1 and R4 values in Table 1-3 .
EFFICIENCY
VS
OUTPUT CURRENT V = 3.3 V, 2.5 V and 1.8 V
O
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
I - Output Current - A
OUT
Efficiency-%
V = 3.3 V
O
V = 2.5 V
O
V = 1.8 V
O
Figure 2-2. TPS54325EVM Efficiency
2.4 Load Regualtion
The load regulation for the TPS54325EVM is shown Figure 2-3 .
1.05 V OUTPUT VOLTAGE
VS
OUTPUT CURRENT
1.000
1.025
1.050
1.075
1.100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
I - Output Current - A
OU T
V
-OutputV
oltage-V
O
U
T
V = 12 V
IN
V = 18 V
IN
V = 5 V
IN
Figure 2-3. TPS54325EVM Load Regulation
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SLVU300A – JUNE 2009 – REVISED OCTOBER 2021
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