Datasheet

V = 50 mV / div (ac coupled)
OUT
Time = 200 µsec / div
I = 2 A / div
OUT
Load step = 1.25 A - 3.75 A, slew rate = 0.5 A / µsec
100 1000 10000 100000 1000000
−60
−50
−40
−30
−20
−10
0
10
20
30
40
50
60
−180
−150
−120
−90
−60
−30
0
30
60
90
120
150
180
Frequency (Hz)
Gain (dB)
Phase (°)
Gain
Phase
G005
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2.5 Load Transients
Figure 5 shows the TPS54519EVM-037 response to load transients. The current step is from 25% to 75%
of maximum rated load at 5 V input. Total peak-to-peak voltage variation is as shown, including ripple and
noise on the output.
Figure 5. TPS54519EVM-037 Transient Response
2.6 Loop Characteristics
Figure 6 shows the TPS54519EVM-037 loop-response characteristics. Gain and phase plots are shown
for V
IN
voltage of 5 V. Load current for the measurement is 5 A.
Figure 6. TPS54519EVM-037 Loop Response
7
SLVU523–September 2011 TPS54519EVM-037, 5-A, SWIFT™ Regulator— Evaluation Module
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