Datasheet

Time = 1 μsec / div
Vin = 200 mV / div (AC coupled)
Inductor Current = 2 A / div
PH = 10 V / div
Vin = 12 V
Time = 20 msec / div
Vout = 5 V / div
Inductor Current = 10 A / div
PH = 10 V / div
Vin = 12 V
Load = 0.4 Ω
SS/TR = 1 V / div
Time = 1 μsec / div
Vout = 50 mV / div (AC coupled)
Inductor Current = 2 A / div
PH = 10 V / div
Vin = 12 V
Time = 200 μsec / div
Vin = 10 V / div
EN = 2 V / div
SS/TR = 1 V / div
Vout = 2 V / div
Time = 2 msec / div
EN = 2 V / div
Vout = 2 V / div
Vout starting and stopping from 1 V pre-bias voltage
Time = 2 msec / div
Vin = 10 V / div
EN = 2 V / div
Vout = 2 V / div
SS/TR = 1 V / div
TPS54521
SLVS981C –JUNE 2010–REVISED AUGUST 2013 www.ti.com
STARTUP and SHUTDOWN on EN SHUTDOWN with VIN
with PRE-BIAS (1 Ω Load) (1 Ω Load)
Figure 41. Figure 42.
SHUTDOWN with EN OUTPUT VOLTAGE RIPPLE
(1 Ω Load) (1 Ω Load)
Figure 43. Figure 44.
INPUT VOLTAGE RIPPLE
(1 Ω Load) OVERCURRENT HICCUP MODE
Figure 45. Figure 46.
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