Datasheet

V 50 mV/div (-1.05V offset)
OUT
Time 1 µs/div
V 5 V/div
SW
V 50 mV/div (AC coupled)
IN
V 500 mV/div
OUT
Time 2 ms/div
I 200 mA/div
IN
V 2 V/div
IN
VREG5 2 V/div
V 500 mV/div
OUT
Time 2 ms/div
I 200 mA/div
IN
V 2 V/div
IN
VREG5 2 V/div
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4.8 Input Voltage Ripple
The TPS54427 input voltage ripple is shown in Figure 7. The output current is the rated full load of 4 A.
Figure 7. TPS54427 Input Voltage Ripple
4.9 Start-Up and Shut-Down
The TPS54427 start-up and shut-down waveforms relative to V
IN
are shown in Figure 8 and Figure 9.
Figure 8. TPS54427 Start-Up Relative to V
IN
Figure 9. TPS54427 Shut-down Relative to V
IN
8
TPS54427, 4-A, SWIFT™ Regulator— Evaluation Module SLVU579–December 2011
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