Datasheet

100 1k 10k 100k 1M
−20
−10
0
10
20
30
40
50
−60
−30
0
30
60
90
120
150
Frequency (Hz)
Gain (dB)
Phase (°)
Mag [B/A]
Phase [B-A]
G005
Time - 100 µs/div
1 A/div
50 mV/div
V /AC Coupled
OUT
I /0 - 3 A Transient
OUT
G004
Test Setup and Results www.ti.com
2.5 Load Transients
Figure 5 shows the EVM response to load transients. The current step is from 0% to 50% of maximum
rated load at 3.0- V input. Total peak-to-peak voltage variation is as shown.
Figure 5. TPS54678EVM-155 Transient Response
2.6 Loop Characteristics
Figure 6 shows the EVM loop-response characteristics. Gain and phase plots are shown for V
IN
voltage of
5 V. Load current for the measurement is 6 A.
Figure 6. TPS54678EVM-155 Loop Response
8
TPS54678EVM-155 6-A, SWIFT™ Regulator Evaluation Module SLVU747–June 2012
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