Datasheet

V = 5 V / div
IN
EN = 10 V / div
V = 1 V / div
OUT
Time = 2 msec / div
V = 20 mV / div (ac coupled)
OUT
Time = 1 µsec / div
PH = 5 V / div
Inductor Current = 2 A / div
www.ti.com Test Setup and Results
The TPS54429EEVM-608 start-up waveform relative to enable (EN) is shown in Figure 9.
4.11 Eco-mode™ Operation
The waveforms Figure 10, Figure 11 and Figure 12in show the Eco-mode™ operation of the TPS54429E.
In Figure 10, the circuit is switching normally with the inductor current always positive.
5 Test Setup and Results
Figure 9. TPS54429EEVM-608 Start-Up Relative to Enable
Figure 10. TPS54329EEVM-608 Normal Switching
9
SLVU444–March 2011 TPS54429EEVM-608, 4.5-A, SWIFT™ Regulator— Evaluation Module
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