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2.6 Loop Characteristics
The TPS54231EVM-372 loop-response characteristics are shown in Figure 2-6 . Gain and phase plots are
shown for V
IN
voltage of 15 V. Load current for the measurement is 1 A.
-30
-20
-10
0
10
20
30
40
50
60
10 100 1k 10k 100k 1M
Frequency(f) - Hz
Gain-dB
-90
-40
10
60
110
160
Phase(°)-deg
Phase
Gain
Figure 2-6. TPS54231EVM-372 Loop Response
2.7 Output Voltage Ripple
The TPS54231EVM-372 output voltage ripple is shown in Figure 2-7 . The output current is the rated full load of 2
A and V
IN
= 15 V. The ripple voltage is measured directly across the output capacitors.
Figure 2-7. TPS54231EVM-372 Output Ripple
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SLVU263A – AUGUST 2008 – REVISED OCTOBER 2021
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