Datasheet

RT/CLK
GND
PVIN
VIN
VSENSE
COMP
SS/TR
EN
PH
BOOT
PWRGD
GND
PVIN
PH
PH
EXPOSED THERMAL
PAD AREA
COMPENSATION
NETWORK
BOOT
CAPACITOR
PVIN
INPUT
BYPASS
CAPACITOR
VOUT
TOPSIDE
GROUND
AREA
VIA toGroundPlane
OUTPUT
INDUCTOR
OUTPUT
FILTER
CAPACITOR
FREQUENCY SET RESISTOR
SLOWSTART
CAPACITOR
ANALOGGROUND TRACE
VIN
INPUT
BYPASS
CAPACITOR
VIN
PVIN
UVLOSET
RESISTORS
FEEDBACK
RESISTORS
EtchUnderComponent
0.010in.Diameter
ThermalVIA toGroundPlane
TPS54521
SLVS981C –JUNE 2010–REVISED AUGUST 2013 www.ti.com
Figure 55. PCB Layout
Estimated Circuit Area
The estimated printed circuit board area for the components used in the design of Figure 34 is 0.5 in
2
(323 mm
2
).
This area does not include test points or connectors.
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