Datasheet

Time: 1.0 ms/div
C3: V
OUT
(2.0 V/div)
C2: V
IN
(2.0 V/div)
C1: SW (5.0 V/div)
I
OUT
= 2.1 A
Time: 2.0 ms/div
C3: V
OUT
(2.0 V/div)
C2: V
IN
(2.0 V/div)
C1: SW (5.0 V/div)
I
OUT
= 2.1 A
Test Setup and Results www.ti.com
4.11 Powering Up and Down with V
IN
Figure 13 shows the start-up waveforms for the EVM. The input voltage ramps with the input voltage
power supply and EN is tied to V
IN
. V
IN
ramps up, the converter starts switching and the output voltage
ramps to 5 V. The load is 2.1 A.
Figure 13. TPS55330EVM-017 Power Up With V
IN
Figure 14 shows the shutdown waveforms for the EVM. The input voltage ramps down with the input
voltage power supply and EN is tied to V
IN
. When V
IN
is less than the 2.5-V typical UVLO, the converter
stops switching and the output voltage ramps down. The load is 2.1 A.
Figure 14. TPS55330EVM-017 Power Down With V
IN
10
TPS55330EVM-017 2.9-V to 4.2-V Input, 5.0-V Output Boost Evaluation SLVU930–July 2013
Module
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