Datasheet

V (ac coupled) = 20mV/div
OUT
I = 200mA/div
L
SW = 20V/div
Time - 50 s/divm
V = 1V/div
IN
EN = 2V/div
V = 10V/div
OUT
SW = 10V/div
Time - 500 s/divm
V (ac coupled) = 100mV/div
OUT
SW = 20V/div
I = 1A/div
L
Time - 1ms/div
V (ac coupled) = 10mV/div
OUT
I = 1A/div
L
SW = 20V/div
Time - 1 s/divm
50
55
60
65
70
75
80
85
90
95
100
0 0.4 0.8 1.2 1.6 2
Output Current (A)
Efficiency (%)
V
IN
= 5 V
V
IN
= 12 V
G017
I = 200mA/div
OUT
Time - 1ms/div
V (ac coupled) = 500mV/div
OUT
TPS55340
www.ti.com SLVSBD4B –MAY 2012–REVISED OCTOBER 2012
Figure 17. Efficiency vs Output Current Figure 18. Load Transient Response
Figure 19. CCM PWM Operation Figure 20. DCM PWM operation
Figure 21. Pulse Skipping Figure 22. Start Up
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