Datasheet

V = 10 V/div
IN
EN = 2 V/div
SS/TR = 1 V/div
V = 2 V/div
OUT
t - Time - 2 ms/div
EN = 1 V/div
V starting and stopping
from a 0.5 V pre-bias voltage
OUT
V = 1 V/div
OUT
t - Time - 2 ms/div
V =10mV/div(ACcoupled)
OUT
t-Time-1 s/divm
Inductorcurrent=1 A/div
PH=10V/div
V = 10 V/div
IN
EN = 2 V/div
SS/TR = 1 V/div
V = 2 V/div
OUT
t - Time - 100 s/divm
V = 12 V
IN
Inductor current = 5 A/div
PH = 10 V/div
SS/TR = 1 V/div
V = 2 V/div
OUT
t - Time - 20 ms/div
Load = 0.2 W
V =200mV/div(ACcoupled)
IN
Inductorcurrent=1 A/div
PH=10V/div
t-Time-1 s/divm
TPS54320
www.ti.com SLVS982A –AUGUST 2010–REVISED SEPTEMBER 2010
STARTUP and SHUTDOWN with PRE-BIAS on EN (1.1 Ω SHUTDOWN with VIN
Load) (1.1 Ω Load)
Figure 41. Figure 42.
SHUTDOWN with EN
(1.1 Ω Load) OUTPUT VOLTAGE RIPPLE (1.1 Ω Load)
Figure 43. Figure 44.
INPUT VOLTAGE RIPPLE (1.1 Ω Load) OVERCURRENT HICCUP MODE
Figure 45. Figure 46.
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