TPS54521 datasheet(27/41 Pages) TI2

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Time = 2 msec / div

Vin = 5 V / div

Vout = 2 V / div

Vout starting 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

Time = 2 msec / div

Vin = 10 v / div

SS/TR = 1 V / div

EN = 2 V / div

Vout = 2 V / div

Time = 2 msec / div

Vin = 10 V / div

EN = 2 V / div

Vout = 2 V / div

SS/TR = 1 V / div

Time = 50 sec / div

Vout = 50 mV / div (AC coupled)

Iout = 1 A / div (0 A to 3 A load step)

Vin = 12 V

Time = 2 msec / div

Vin = 10 V / div

EN = 2 V / div

Vout = 2 V / div

SS/TR = 1 V / div

TPS54521

www.ti.com

SLVS981C – JUNE 2010 – REVISED AUGUST 2013

Application Curves from the Design Example

STARTUP with VIN

LOAD TRANSIENT

Ω Load)

Figure 35.

Figure 36.

STARTUP with VIN

STARTUP with EN

(No Load)

Ω Load)

Figure 37.

Figure 38.

STARTUP with EN

STARTUP on VIN with PRE-BIAS

(No Load)

Ω Load)

Figure 39.

Figure 40.

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