Datasheet

Output Voltage Regulation
2-5
Test Setup and Results
2.4 Output Voltage Regulation
The output voltage load regulation of the TPS54980EVM−022 is shown in
Figure 2−4, while the output voltage line regulation is shown in Figure 2−5.
Measurements are shown for an ambient temperature of 25°C.
Figure 2−4. Load Regulation
−1
−0.8
−0.6
−0.4
−0.2
0
0.2
0.4
0.6
0.8
1
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OUTPUT VOLTAGE
vs
OUTPUT CURRENT
I
O
− Output Current − A
− Output Voltage Change − %V
O
V
I
= 3.3 V
Figure 2−5. Line Regulation
I
O
= 4.5 A
−0.5
−0.4
−0.3
−0.2
−0.1
0
0.1
0.2
0.3
0.4
0.5
3 3.2 3.4 3.6 3.8 4
I
O
= 0 A
I
O
= 9 A
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
V
I
− Input Voltage − V
− Output Voltage Change − %V
O
I
O
= 4.5 A