Texas Instruments TPS54334EVM-722, User Manual, Page: 7 / 21

Frequency (Hz)
Ga
in
(d
B
)
P
h
a
se
(
q
)
-60 -180
-40 -120
-20 -60
0 0
20 60
40 120
60 180
100 1k 10k 100k 1M
D021
Gain
Phase
VOUT = 200 mV/div(AC coupled)
IOUT = 1 A/div
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Test Setup and Results
2.5 Load Transients
Figure 5 shows the TPS54334EVM-722 response to load transients. The current step is from 25% to 75%
of maximum rated load at 12-V input. Total peak-to-peak voltage variation is as shown, including ripple
and noise on the output.
Figure 5. TPS54334EVM-722 Transient Response
2.6 Loop Characteristics
Figure 6 shows the TPS54334EVM-722 loop-response characteristics. Gain and phase plots are shown
for V
IN
voltage of 24 V. Load current for the measurement is 1.5 A.
Figure 6. TPS54334EVM-722 Loop Response
7 SLVUAH4 – August 2015 TPS54334EVM-722 3-A Regulator Evaluation Module
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